I tried to load some scripts into a page using innerHTML on a <div>. It appears that the script loads into the DOM, but it is never executed (at least in Firefox and Chrome). Is there a way to have scripts execute when inserting them with innerHTML?
Sample code:
<!DOCTYPE html>
<html>
<body onload="document.getElementById('loader').innerHTML = '<script>alert(\'hi\')<\/script>'">
Shouldn't an alert saying 'hi' appear?
<div id="loader"></div>
</body>
</html>
Here is a method that recursively replaces all scripts with executable ones:
function nodeScriptReplace(node) {
if ( nodeScriptIs(node) === true ) {
node.parentNode.replaceChild( nodeScriptClone(node) , node );
}
else {
var i = -1, children = node.childNodes;
while ( ++i < children.length ) {
nodeScriptReplace( children[i] );
}
}
return node;
}
function nodeScriptClone(node){
var script = document.createElement("script");
script.text = node.innerHTML;
var i = -1, attrs = node.attributes, attr;
while ( ++i < attrs.length ) {
script.setAttribute( (attr = attrs[i]).name, attr.value );
}
return script;
}
function nodeScriptIs(node) {
return node.tagName === 'SCRIPT';
}
Example call:
nodeScriptReplace(document.getElementsByTagName("body")[0]);
You have to use eval() to execute any script code that you've inserted as DOM text.
MooTools will do this for you automatically, and I'm sure jQuery would as well (depending on the version. jQuery version 1.6+ uses eval). This saves a lot of hassle of parsing out <script> tags and escaping your content, as well as a bunch of other "gotchas".
Generally if you're going to eval() it yourself, you want to create/send the script code without any HTML markup such as <script>, as these will not eval() properly.
Here is a very interesting solution to your problem:
http://24ways.org/2005/have-your-dom-and-script-it-too
So use this instead of script tags:
<img src="empty.gif" onload="alert('test');this.parentNode.removeChild(this);" />
You can create script and then inject the content.
var g = document.createElement('script');
var s = document.getElementsByTagName('script')[0];
g.text = "alert(\"hi\");"
s.parentNode.insertBefore(g, s);
This works in all browsers :)
I do this every time I wanna insert a script tag dynamically !
const html =
`<script>
alert('👋 there ! Wanna grab a 🍺');
</script>`;
const scriptEl = document.createRange().createContextualFragment(html);
parent.append(scriptEl);
NOTE: ES6 used
EDIT 1:
Clarification for you guys - I've seen a lot of answers use appendChild and wanted to let you guys know that it works exactly as append
I used this code, it is working fine
var arr = MyDiv.getElementsByTagName('script')
for (var n = 0; n < arr.length; n++)
eval(arr[n].innerHTML)//run script inside div
I had this problem with innerHTML, I had to append a Hotjar script to the "head" tag of my Reactjs application and it would have to execute right after appending.
One of the good solutions for dynamic Node import into the "head" tag is React-helment module.
Also, there is a useful solution for the proposed issue:
No script tags in innerHTML!
It turns out that HTML5 does not allow script tags to be dynamically added using the innerHTML property. So the following will not execute and there will be no alert saying Hello World!
element.innerHTML = "<script>alert('Hello World!')</script>";
This is documented in the HTML5 spec:
Note: script elements inserted using innerHTML do not execute when
they are inserted.
But beware, this doesn't mean innerHTML is safe from cross-site scripting. It is possible to execute JavaScript via innerHTML without using tags as illustrated on MDN's innerHTML page.
Solution: Dynamically adding scripts
To dynamically add a script tag, you need to create a new script element and append it to the target element.
You can do this for external scripts:
var newScript = document.createElement("script");
newScript.src = "http://www.example.com/my-script.js";
target.appendChild(newScript);
And inline scripts:
var newScript = document.createElement("script");
var inlineScript = document.createTextNode("alert('Hello World!');");
newScript.appendChild(inlineScript);
target.appendChild(newScript);
Here's a more modern (and concise) version of mmm's awesome solution:
function executeScriptElements(containerElement) {
const scriptElements = containerElement.querySelectorAll("script");
Array.from(scriptElements).forEach((scriptElement) => {
const clonedElement = document.createElement("script");
Array.from(scriptElement.attributes).forEach((attribute) => {
clonedElement.setAttribute(attribute.name, attribute.value);
});
clonedElement.text = scriptElement.text;
scriptElement.parentNode.replaceChild(clonedElement, scriptElement);
});
}
Note: I've also tried alternative solutions using cloneNode() or outerHTML but that didn't work.
You could do it like this:
var mydiv = document.getElementById("mydiv");
var content = "<script>alert(\"hi\");<\/script>";
mydiv.innerHTML = content;
var scripts = mydiv.getElementsByTagName("script");
for (var i = 0; i < scripts.length; i++) {
eval(scripts[i].innerText);
}
Here a solution that does not use eval, and works with scripts, linked scripts , as well as with modules.
The function accepts 3 parameters :
html : String with the html code to insert
dest : reference to the target element
append : boolean flag to enable appending at the end of the target element html
function insertHTML(html, dest, append=false){
// if no append is requested, clear the target element
if(!append) dest.innerHTML = '';
// create a temporary container and insert provided HTML code
let container = document.createElement('div');
container.innerHTML = html;
// cache a reference to all the scripts in the container
let scripts = container.querySelectorAll('script');
// get all child elements and clone them in the target element
let nodes = container.childNodes;
for( let i=0; i< nodes.length; i++) dest.appendChild( nodes[i].cloneNode(true) );
// force the found scripts to execute...
for( let i=0; i< scripts.length; i++){
let script = document.createElement('script');
script.type = scripts[i].type || 'text/javascript';
if( scripts[i].hasAttribute('src') ) script.src = scripts[i].src;
script.innerHTML = scripts[i].innerHTML;
document.head.appendChild(script);
document.head.removeChild(script);
}
// done!
return true;
}
For anyone still trying to do this, no, you can't inject a script using innerHTML, but it is possible to load a string into a script tag using a Blob and URL.createObjectURL.
I've created an example that lets you run a string as a script and get the 'exports' of the script returned through a promise:
function loadScript(scriptContent, moduleId) {
// create the script tag
var scriptElement = document.createElement('SCRIPT');
// create a promise which will resolve to the script's 'exports'
// (i.e., the value returned by the script)
var promise = new Promise(function(resolve) {
scriptElement.onload = function() {
var exports = window["__loadScript_exports_" + moduleId];
delete window["__loadScript_exports_" + moduleId];
resolve(exports);
}
});
// wrap the script contents to expose exports through a special property
// the promise will access the exports this way
var wrappedScriptContent =
"(function() { window['__loadScript_exports_" + moduleId + "'] = " +
scriptContent + "})()";
// create a blob from the wrapped script content
var scriptBlob = new Blob([wrappedScriptContent], {type: 'text/javascript'});
// set the id attribute
scriptElement.id = "__loadScript_module_" + moduleId;
// set the src attribute to the blob's object url
// (this is the part that makes it work)
scriptElement.src = URL.createObjectURL(scriptBlob);
// append the script element
document.body.appendChild(scriptElement);
// return the promise, which will resolve to the script's exports
return promise;
}
...
function doTheThing() {
// no evals
loadScript('5 + 5').then(function(exports) {
// should log 10
console.log(exports)
});
}
I've simplified this from my actual implementation, so no promises that there aren't any bugs in it. But the principle works.
If you don't care about getting any value back after the script runs, it's even easier; just leave out the Promise and onload bits. You don't even need to wrap the script or create the global window.__load_script_exports_ property.
Here is a recursive function to set the innerHTML of an element that I use in our ad server:
// o: container to set the innerHTML
// html: html text to set.
// clear: if true, the container is cleared first (children removed)
function setHTML(o, html, clear) {
if (clear) o.innerHTML = "";
// Generate a parseable object with the html:
var dv = document.createElement("div");
dv.innerHTML = html;
// Handle edge case where innerHTML contains no tags, just text:
if (dv.children.length===0){ o.innerHTML = html; return; }
for (var i = 0; i < dv.children.length; i++) {
var c = dv.children[i];
// n: new node with the same type as c
var n = document.createElement(c.nodeName);
// copy all attributes from c to n
for (var j = 0; j < c.attributes.length; j++)
n.setAttribute(c.attributes[j].nodeName, c.attributes[j].nodeValue);
// If current node is a leaf, just copy the appropriate property (text or innerHTML)
if (c.children.length == 0)
{
switch (c.nodeName)
{
case "SCRIPT":
if (c.text) n.text = c.text;
break;
default:
if (c.innerHTML) n.innerHTML = c.innerHTML;
break;
}
}
// If current node has sub nodes, call itself recursively:
else setHTML(n, c.innerHTML, false);
o.appendChild(n);
}
}
You can see the demo here.
Filter your script tags and run each of them with eval
var tmp= document.createElement('div');
tmp.innerHTML = '<script>alert("hello")></script>';
[...tmp.children].filter(x => x.nodeName === 'SCRIPT').forEach(x => eval(x.innerText));
Yes you can, but you have to do it outside of the DOM and the order has to be right.
var scr = '<scr'+'ipt>alert("foo")</scr'+'ipt>';
window.onload = function(){
var n = document.createElement("div");
n.innerHTML = scr;
document.body.appendChild(n);
}
...will alert 'foo'. This won't work:
document.getElementById("myDiv").innerHTML = scr;
And even this won't work, because the node is inserted first:
var scr = '<scr'+'ipt>alert("foo")</scr'+'ipt>';
window.onload = function(){
var n = document.createElement("div");
document.body.appendChild(n);
n.innerHTML = scr;
}
Krasimir Tsonev has a great solution that overcome all problems.
His method doesn't need using eval, so no performance nor security problems exist.
It allows you to set innerHTML string contains html with js and translate it immediately to an DOM element while also executes the js parts exist along the code. short ,simple, and works exactly as you want.
Enjoy his solution:
http://krasimirtsonev.com/blog/article/Convert-HTML-string-to-DOM-element
Important notes:
You need to wrap the target element with div tag
You need to wrap the src string with div tag.
If you write the src string directly and it includes js parts, please take attention to write the closing script tags correctly (with \ before /) as this is a string.
Use $(parent).html(code) instead of parent.innerHTML = code.
The following also fixes scripts that use document.write and scripts loaded via src attribute. Unfortunately even this doesn't work with Google AdSense scripts.
var oldDocumentWrite = document.write;
var oldDocumentWriteln = document.writeln;
try {
document.write = function(code) {
$(parent).append(code);
}
document.writeln = function(code) {
document.write(code + "<br/>");
}
$(parent).html(html);
} finally {
$(window).load(function() {
document.write = oldDocumentWrite
document.writeln = oldDocumentWriteln
})
}
Source
Try using template and document.importNode. Here is an example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Sample</title>
</head>
<body>
<h1 id="hello_world">Sample</h1>
<script type="text/javascript">
var div = document.createElement("div");
var t = document.createElement('template');
t.innerHTML = "Check Console tab for javascript output: Hello world!!!<br/><script type='text/javascript' >console.log('Hello world!!!');<\/script>";
for (var i=0; i < t.content.childNodes.length; i++){
var node = document.importNode(t.content.childNodes[i], true);
div.appendChild(node);
}
document.body.appendChild(div);
</script>
</body>
</html>
You can also wrap your <script> like this and it will get executed:
<your target node>.innerHTML = '<iframe srcdoc="<script>alert(top.document.title);</script>"></iframe>';
Please note: The scope inside srcdoc refers to the iframe, so you have to use top like in the example above to access the parent document.
Single line solution below:
document.getElementsByTagName("head")[0].append(document.createRange().createContextualFragment('<script src="https://google.com/file.js"></script>'));
My solution for this problem is to set a Mutation Observer to detect <script></script> nodes and then replace it with a new <script></script> node with the same src. For example:
let parentNode = /* node to observe */ void 0
let observer = new MutationObserver(mutations=>{
mutations.map(mutation=>{
Array.from(mutation.addedNodes).map(node=>{
if ( node.parentNode == parentNode ) {
let scripts = node.getElementsByTagName('script')
Array.from(scripts).map(script=>{
let src = script.src
script = document.createElement('script')
script.src = src
return script
})
}
})
})
})
observer.observe(document.body, {childList: true, subtree: true});
Gabriel Garcia's mention of MutationObservers is on the right track, but didn't quite work for me. I am not sure if that was because of a browser quirk or due to a mistake on my end, but the version that ended up working for me was the following:
document.addEventListener("DOMContentLoaded", function(event) {
var observer = new MutationObserver(mutations=>{
mutations.map(mutation=>{
Array.from(mutation.addedNodes).map(node=>{
if (node.tagName === "SCRIPT") {
var s = document.createElement("script");
s.text=node.text;
if (typeof(node.parentElement.added) === 'undefined')
node.parentElement.added = [];
node.parentElement.added[node.parentElement.added.length] = s;
node.parentElement.removeChild(node);
document.head.appendChild(s);
}
})
})
})
observer.observe(document.getElementById("element_to_watch"), {childList: true, subtree: true,attributes: false});
};
Of course, you should replace element_to_watch with the name of the element that is being modified.
node.parentElement.added is used to store the script tags that are added to document.head. In the function used to load the external page, you can use something like the following to remove no longer relevant script tags:
function freeScripts(node){
if (node === null)
return;
if (typeof(node.added) === 'object') {
for (var script in node.added) {
document.head.removeChild(node.added[script]);
}
node.added = {};
}
for (var child in node.children) {
freeScripts(node.children[child]);
}
}
And an example of the beginning of a load function:
function load(url, id, replace) {
if (document.getElementById(id) === null) {
console.error("Element of ID "+id + " does not exist!");
return;
}
freeScripts(document.getElementById(id));
var xhttp = new XMLHttpRequest();
// proceed to load in the page and modify innerHTML
}
Building up on Danny '365CSI' Engelman's comment, here is an universal solution:
<script>
alert("This script always runs.");
script01 = true;
</script>
<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"
onload="if(typeof script01==='undefined') eval(this.previousElementSibling.innerHTML)">
Use this as innerHTML (i.e. loaded by XMLHttpRequest) or directly (i.e. inserted by PHP backend), the script always loads once.
Explanation: script loaded as innerHTML is not executed, but onload content atribute is. If the script was not executed (added as innerHTML) then the script is executed in image onload event. If the script was loaded (added by backend) then script01 variable is defined and onload will not run the script for the second time.
Execute (Java Script) tag from innerHTML
Replace your script element with div having a class attribute class="javascript" and close it with </div>
Don't change the content that you want to execute (previously it was in script tag and now it is in div tag)
Add a style in your page...
<style type="text/css"> .javascript { display: none; } </style>
Now run eval using jquery(Jquery js should be already included)
$('.javascript').each(function() {
eval($(this).text());
});`
You can explore more here, at my blog.
For me the best way is to insert the new HTML content through innerHtml and then use
setTimeout(() => {
var script_el = document.createElement("script")
script_el.src = 'script-to-add.js'
document.body.appendChild(script_el)
}, 500)
The setTimeout is not required but it works better. This worked for me.
My own twist, using modern JS and typescript. Not sure why people are filtering on tagName etc when querySelector is right there.
Works a charm for me:
function makeScriptsExecutable(el: Element) {
el.querySelectorAll("script").forEach(script => {
const clone = document.createElement("script")
for (const attr of script.attributes) {
clone.setAttribute(attr.name, attr.value)
}
clone.text = script.innerHTML
script.parentNode?.replaceChild(clone, script)
})
}
simple, no eval, no functions:
fetch('/somepage')
.then(x=>x.text())
.then(x=>{
divDestination.innerHTML=x;
divDestination.querySelectorAll("script")
.forEach(x=>{
var sc=document.createElement("script");
sc.appendChild(document.createTextNode(x.innerText));
divDestination.appendChild(sc)
})
})
I'm newbie at Jquery. I stacked to passing php $_GET['myvalue'] to my jquery file.
I struggled very much but I cannot find solution.
I have different one php file and one jquery file. I call my php file like
myphpfile.php?myvalue=testvalue
Then I want to receive myvalue's value to my jquery file. I tried document.getElementById but It doesnt work.
For any helping Thanks.
If you want to access the $_GET['myvalue'] value in your Javascript you can echo it out straight into it.
<script type="text/javascript">
// Your code
// The var you want to assign it to
var value = '<?php echo $_GET['myvalue'];?>'
</script>
Try this in your jQuery File:
First create a function to parse the parameters in the URL:
function getUrlVars() {
var vars = {};
var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m, key, value) {
vars[key] = value;
});
return vars;
}
Then you call the function:
var myUrlParameters = getUrlVars();
Then you can access them with:
var myParameter = myUrlParameters['myParameter'];
You need to read more about jQuery and Javascript...
You might want to add the variable you want in an HTML element, for example:
PHP
<?php
$myValue = $_GET["myvalue"];
echo '<input type="hidden" name="_method" value="'.$myValue.'" id="myElement" />';
?>
At jQuery:
$(document).ready(function(){
alert($('#myElement'));
});
If you want to access the $_GET['myvalue'] value in your script but using only Javascript.
function getURLParameter(name) {
return decodeURI(
(RegExp(name + '=' + '(.+?)(&|$)').exec(location.search)||[,null])[1]
);
}
Okay, so in my <head> section i have the following:
<script>
var userDefaultInfo = '<?=$userInfo;?>';
var jGets = new Array ();
<?
if(isset($_GET)) {
foreach($_GET as $key => $val)
echo "jGets[\"$key\"]=\"$val\";\n";
}
?>
</script>
Now In my external .JS file, In the $(document).ready() section I can access userDefaultInfo fine, however, I am trying to access jGets, but not directly from there.
in the external .JS file, outside of $(document).ready(); I have the following function:
var sendGET = function () {
var data = $(this).val();
var elementName = $(this).attr("name");
var url = "zephi.php?p=home/support/admin_support.php&"+elementName+"="+data;
jQuery.each(jGets, function(i, val) {
alert(val);
});
alert(url);
window.location = url;
}
When a user changes a box, this function fires and changes the window location using the data. However, I want to add the data in the variable jGets, but I do not seem to be able to reference it at all in there.
Why is this?
You're "mis"-using an Array as an Object.
var jGets = {};
Perhaps doing either one of the following might work:
echo 'var jGets = '.(isset($_GET) ? preg_replace('/^"|"$/','',json_encode($_GET)) : '{}').';'
//or
echo 'var jGets = JSON.parse('.isset($_GET) ? json_encode($_GET); : '"{}"'.');'
This will produce an object literal, assigning everything you need to jGets, without having to mess about with loops. Since JSON stands for JavaScript Object Notation, it seems only logical/natural to use that to set the variable accordingly. Read more on json_encode here, more on JSON in PHP can be found here
Hello im currently writing my own javascript/PHP css editor and i have it explode the file into tags and its all echoed out into separate text areas from a loop, i was wondering if its possible to scan the page with javascript and get all the content from all the text areas and add them into one variable or one text-area, thanks in advance.
Try this:
function getTextAreasText() {
var all = document.getElementsByTagName("textarea");
var values = "";
for(var i=0; i<all.length; i++) {
values += all[i].value;
}
return values;
}
.
.
.
.
var allTexts = getTextAreasText();
Yes,
If you are familiar with jquery, this is really simple. You would do something like:
var compiled_content = '';
$.('.name_of_class_to_extract').each(function() {
compiled_content += $(this).html();
});
This would give you all HTML content from the specified class ('name_of_class_to_extract') in the variable compiled_content. You could then insert this content into another element like:
$('.class_to_inseert').html(compiled_content);
var a = "";
$("textarea").each(function(){
a += $(this).text();
$(this).prepend("<h1>" + "someValue" + "</h1>") //prepend some markup before each textarea
});
a //concatenated data
Yes possible. Edit following lines for yourself
// jquery code
$(function(){
$.ajax({
url : 'get_content_via.php',
type : 'GET',
data : 'maybe_use_filename',
success:function(data){
var splittedData = data.split("your_seperator"); // like explode
for( var i = 0 ; i < splittedData.lenght ; i++){
$('#targetInput').append(splittedData[i]);
}
}
});
});
How to access PHP session variables from jQuery function in a .js file?
In this code, I want to get "value" from a session variable
$(function() {
$("#progressbar").progressbar({
value: 37
});
});
You can produce the javascript file via PHP. Nothing says a javascript file must have a .js extention. For example in your HTML:
<script src='javascript.php'></script>
Then your script file:
<?php header("Content-type: application/javascript"); ?>
$(function() {
$( "#progressbar" ).progressbar({
value: <?php echo $_SESSION['value'] ?>
});
// ... more javascript ...
If this particular method isn't an option, you could put an AJAX request in your javascript file, and have the data returned as JSON from the server side script.
I was struggling with the same problem and stumbled upon this page. Another solution I came up with would be this :
In your html, echo the session variable (mine here is $_SESSION['origin']) to any element of your choosing :
<p id="sessionOrigin"><?=$_SESSION['origin'];?></p>
In your js, using jQuery you can access it like so :
$("#sessionOrigin").text();
EDIT: or even better, put it in a hidden input
<input type="hidden" name="theOrigin" value="<?=$_SESSION['origin'];?>"></input>
If you want to maintain a clearer separation of PHP and JS (it makes syntax highlighting and checking in IDEs easier) then you can create JQuery plugins for your code and then pass the $_SESSION['param'] as a variable.
So in page.php:
<script src="my_progress_bar.js"></script>
<script>
$(function () {
var percent = <?php echo $_SESSION['percent']; ?>;
$.my_progress_bar(percent);
});
</script>
Then in my_progress_bar.js:
(function ($) {
$.my_progress_bar = function(percent) {
$("#progressbar").progressbar({
value: percent
});
};
})(jQuery);
You can pass you session variables from your php script to JQUERY using JSON such as
JS:
jQuery("#rowed2").jqGrid({
url:'yourphp.php?q=3',
datatype: "json",
colNames:['Actions'],
colModel:[{
name:'Actions',
index:'Actions',
width:155,
sortable:false
}],
rowNum:30,
rowList:[50,100,150,200,300,400,500,600],
pager: '#prowed2',
sortname: 'id',
height: 660,
viewrecords: true,
sortorder: 'desc',
gridview:true,
editurl: 'yourphp.php',
caption: 'Caption',
gridComplete: function() {
var ids = jQuery("#rowed2").jqGrid('getDataIDs');
for (var i = 0; i < ids.length; i++) {
var cl = ids[i];
be = "<input style='height:22px;width:50px;' `enter code here` type='button' value='Edit' onclick=\"jQuery('#rowed2').editRow('"+cl+"');\" />";
se = "<input style='height:22px;width:50px;' type='button' value='Save' onclick=\"jQuery('#rowed2').saveRow('"+cl+"');\" />";
ce = "<input style='height:22px;width:50px;' type='button' value='Cancel' onclick=\"jQuery('#rowed2').restoreRow('"+cl+"');\" />";
jQuery("#rowed2").jqGrid('setRowData', ids[i], {Actions:be+se+ce});
}
}
});
PHP
// start your session
session_start();
// get session from database or create you own
$session_username = $_SESSION['John'];
$session_email = $_SESSION['johndoe#jd.com'];
$response = new stdClass();
$response->session_username = $session_username;
$response->session_email = $session_email;
$i = 0;
while ($row = mysqli_fetch_array($result)) {
$response->rows[$i]['id'] = $row['ID'];
$response->rows[$i]['cell'] = array("", $row['rowvariable1'], $row['rowvariable2']);
$i++;
}
echo json_encode($response);
// this response (which contains your Session variables) is sent back to your JQUERY
You cant access PHP session variables/values in JS, one is server side (PHP), the other client side (JS).
What you can do is pass or return the SESSION value to your JS, by say, an AJAX call. In your JS, make a call to a PHP script which simply outputs for return to your JS the SESSION variable's value, then use your JS to handle this returned information.
Alternatively store the value in a COOKIE, which can be accessed by either framework..though this may not be the best approach in your situation.
OR you can generate some JS in your PHP which returns/sets the variable, i.e.:
<? php
echo "<script type='text/javascript'>
alert('".json_encode($_SESSION['msg'])."');
</script>";
?>
This is strictly not speaking using jQuery, but I have found this method easier than using jQuery. There are probably endless methods of achieving this and many clever ones here, but not all have worked for me. However the following method has always worked and I am passing it one in case it helps someone else.
Three javascript libraries are required, createCookie, readCookie and eraseCookie. These libraries are not mine but I began using them about 5 years ago and don't know their origin.
createCookie = function(name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
}
else var expires = "";
document.cookie = name + "=" + value + expires + "; path=/";
}
readCookie = function (name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
}
return null;
}
eraseCookie = function (name) {
createCookie(name, "", -1);
}
To call them you need to create a small PHP function, normally as part of your support library, as follows:
<?php
function createjavaScriptCookie($sessionVarible) {
$s = "<script>";
$s = $s.'createCookie('. '"'. $sessionVarible
.'",'.'"'.$_SESSION[$sessionVarible].'"'. ',"1"'.')';
$s = $s."</script>";
echo $s;
}
?>
So to use all you now have to include within your index.php file is
$_SESSION["video_dir"] = "/video_dir/";
createjavaScriptCookie("video_dir");
Now in your javascript library.js you can recover the cookie with the following code:
var videoPath = readCookie("video_dir") +'/'+ video_ID + '.mp4';
I hope this helps.
Strangely importing directly from $_SESSION not working but have to do this to make it work :
<?php
$phpVar = $_SESSION['var'];
?>
<script>
var variableValue= '<?php echo $phpVar; ?>';
var imported = document.createElement('script');
imported.src = './your/path/to.js';
document.head.appendChild(imported);
</script>
and in to.js
$(document).ready(function(){
alert(variableValue);
// rest of js file