i give another codes for example
this is my some3.php code:(First file)
:
<head>
<script src="jquery-1.7.2.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
$('p').click(function(){
var who = $('input#who').val();
var why = $('input#why').val();
$('#geting').load('file2.php',{who:who,why:why},function(applyData){
if ( applyData == 'YEY . Ye have hi' ){
alert('OKKK data is ok ');
} else{
alert('Nooo We dont have requested output');
}
});
});
});
</script>
</head>
<body>
<p> click </p>
<input type="text" id="who">
<br>
<input type="text" id="why">
<div id="geting" align="center">
</div>
</body>
i this my file2.php:
<?php
echo "1";
echo "2";
if($_REQUEST['who'] == "hi"){
$myVariable = "YEY . Ye have hi";
echo $myVariable;
} else{
$myVariable = "The out put is not Hi";
echo $myVariable;
}
?>
its not work why? becuse we have echo "1" and echo "2"
i want jquery just check $myVariable data not whole php callback ! i think i must use json but i dont know how
Well, assuming that you want to read the value with JQuery off the page you are posting to, you could do this, since you are echo'ing the value out in that page by doing the following: echo $myVariable;
Now this is how I generally read a value off another page with JQuery which is by using JQuery's get() method.
$.get("thepagetoretrievefrom.php", function(retrievedvalue) {
alert("Here's the data you requested: " + retrievedvalue);
if (retrievedvalue == 1) {
//print out something here
alert("The retrieved value was 1.");
}
});
And that should retrieve the value from the PHP page. "thepagetoretrievefrom.php" is the page where you want to retrieve the information from. function(retrievedvalue) just indicates that whatever output you're requesting from the page via JQuery will be put into retrievedvalue. Then, using JQuery, you may decide whether you want to do a new call to another page depending on what the "retrievedvalue" was.
This, however is not the best method to achieve this, since this will print whatever may be in that page, but if you are requesting one specific value from that page, then it shouldn't be an issue.
Is there a way in document ready to call php scripts?
I want to do something like this.
<script>
$(document).ready(function($) {
<?php require("readenglish.php"); ?>
<?php require("readfrench.php"); ?>
<?php require("readspanish.php"); ?>
<?php
$opload = $_GET['opload'];
if ($opload == "reade") {
}
else if ($opload == "readf") {
echo "<script type=\"text/javascript\">\n";
echo "document.f1.r1[0].checked = false;\n";
echo "document.f1.r1[1].checked = true;\n";
echo "SelectRead();\n";
echo "</script>";
}
?>
});
</script>
The three php scripts create divs and add information to them from an external domain php script.
You're mixing client and server side with no interface there. You're going to have to use $.ajax to pull in the content from the php scripts and update your DOM accordingly.
Of course... you could also design your site in a way that makes sense. This method looks suspicious at best and almost positively has a much better, exclusively server side solution.
You could do something like this in your page:
$(document).ready(function($) {
$('#result').load('test.php', function() {
alert('Load was performed.');
});
});
Where, on the server, test.php contains your code:
<?php require("readenglish.php"); ?>
<?php require("readfrench.php"); ?>
<?php require("readspanish.php"); ?>
<?php
$opload = $_GET['opload'];
if ($opload == "reade") {
}
else if ($opload == "readf") {
echo "<script type=\"text/javascript\">\n";
echo "document.f1.r1[0].checked = false;\n";
echo "document.f1.r1[1].checked = true;\n";
echo "SelectRead();\n";
echo "</script>";
}
This then needs to be added back into the DOM on the client side. Not good design though.
I would recommend using jQuery. They have a load method that does exactly what you're asking: http://api.jquery.com/load/
you may want to read this article http://www.developer.com/tech/article.php/923111/Client-side-Versus-Server-side-Coding---Part-1.htm
Is there a way to check if JavaScript is enabled with PHP? If so, how?
perhaps a more simple option...
<html>
<head>
<noscript>
This page needs JavaScript activated to work.
<style>div { display:none; }</style>
</noscript>
</head>
<body>
<div>
my content
</div>
</body>
</html>
No, that is not possible, because PHP is a server side language, it does not access the client's browser in any way or form (the client requests from the PHP server).
The client may provide some meta info through HTTP headers, but they don't necessarily tell you whether the user has JavaScript enabled or not and you can't rely on them anyway,
Technically no because as the other answers have said, PHP is strictly server-side, but you could do this...
In the PHP page on the server, output (a lot of HTML has been deleted for brevity)
<html>
<head>
<script type="text/javascript" src="jquery1.4.4.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$.get("myPage.php");
});
</script>
</head>
</html>
Then in myPage.php set a session variable to indicate the client supports JS
<?php
session_start();
$_SESSION['js'] = true;
?>
But really, just use <script></script><noscript></noscript> tags, much, much less effort...
//Here is a solution:
//it works perfect
<?php
if(!isset($_SESSION['js'])||$_SESSION['js']==""){
echo "<noscript><meta http-equiv='refresh' content='0;url=/get-javascript-status.php&js=0'> </noscript>";
$js = true;
}elseif(isset($_SESSION['js'])&& $_SESSION['js']=="0"){
$js = false;
$_SESSION['js']="";
}elseif(isset($_SESSION['js'])&& $_SESSION['js']=="1"){
$js = true;
$_SESSION['js']="";
}
if ($js) {
echo 'Javascript is enabled';
} else {
echo 'Javascript is disabled';
}
?>
//And then inside get-javascript-status.php :
$_SESSION['js'] = isset($_GET['js'])&&$_GET['js']=="0" ? "0":"1";
header('location: /');
You can't tell if a browser has JS enabled, but you can tell if the browser supports JS http://php.net/manual/en/function.get-browser.php
$js_capable = get_browser(null, true)=>javascript == 1
Having said this, that's probably not of much use. You should reconsider detecting JS from PHP. There should be no need for it if you use progressive enhancement, meaning that JS only adds functionality to what's already on the page.
<noscript>
<?php if(basename($_SERVER['REQUEST_URI']) != "disable.html"){ ?>
<meta http-equiv="Refresh" content="0;disable.html">
<?php } ?>
</noscript>
Place above code in your header file after title tag and set appropriate like[disable.html] for redirection.
before try you have to disable your browsers javascript...
after then
Try This code :
<html>
<head>
<noscript><meta http-equiv="refresh"content="0; url=script-disabled.html">
</noscript>
<h1>congrats ! Your Browser Have Java Script Enabled </h1>
</head>
</html>
Write something in script-disabled.html
its work
You can try with 2 metod:
setting cookies with JS and detecting them from PHP
creating a form with a hidden field and an empty value; and then assigning some value to it with JS, if the field gets the value – JS is ON, otherwise it’s off. But the form had to be submitted first before PHP can request that hidden field’s value.
if you want detect if JS enable enable setting before the loading of the page you can try this (I don't konw if it works):
<?php
if (isset($_POST['jstest'])) {
$nojs = FALSE;
} else {
// create a hidden form and submit it with javascript
echo '<form name="jsform" id="jsform" method="post" style="display:none">';
echo '<input name="jstest" type="text" value="true" />';
echo '<script language="javascript">';
echo 'document.jsform.submit();';
echo '</script>';
echo '</form>';
// the variable below would be set only if the form wasn't submitted, hence JS is disabled
$nojs = TRUE;
}
if ($nojs){
//JS is OFF, do the PHP stuff
}
?>
there is a fine tutorial on this issue on address http://www.inspirationbit.com/php-js-detection-of-javascript-browser-settings/
Here is a small include I made up that I have on top of my pages to detect if js is enabled. Hope this helps out...
<?php
//Check if we should check for js
if ((!isset($_GET['jsEnabled']) || $_GET['jsEnabled'] == 'true') && !isset($_SERVER['HTTP_X_REQUESTED_WITH'])){
//Check to see if we already found js enabled
if (!isset($_SESSION['javaEnabled'])){
//Check if we were redirected by javascript
if (isset($_GET['jsEnabled'])){
//Check if we have started a session
if(session_id() == '') {
session_start();
}
//Set session variable that we have js enabled
$_SESSION['javaEnabled'] = true;
}
else{
$reqUrl = $_SERVER['REQUEST_URI'];
$paramConnector = (strpos($reqUrl, "?"))? "&" : "?";
echo "
<script type='text/javascript'>
window.location = '" . $reqUrl . $paramConnector . "jsEnabled=true'
</script>
<noscript>
<!-- Redirect to page and tell us that JS is not enabled -->
<meta HTTP-EQUIV='REFRESH' content='0; " . $reqUrl . $paramConnector . "jsEnabled=false'>
</noscript>
";
//Break out and try again to check js
exit;
}
}
}
?>
<html>
<head>
<?php
if(!isset($_REQUEST['JS'])){?>
<noscript>
<meta http-equiv="refresh" content="0; url='<?php echo basename($_SERVER['PHP_SELF']);?>?JS='"/>
</noscript><?php
}
?>
</head>
<body>
<?php
if(isset($_REQUEST['JS'])) echo 'JavaScript is Disabled';
else echo 'JavaScript is Enabled';
?>
</body>
</html>
PHP can't be used to detect whether javascript is enabled or not. Instead use <noscript> to display an alternate message / do something.
To get rid of bots with JS disabled:
<?php
session_start();
#$_SESSION['pagecount']++;
?>
<html>
<head>
<?php
if (!isset($_COOKIE['JSEnabled']) || strlen($_COOKIE['JSEnabled'])!=32 ) {
$js_cookie=md5(md5(#$_SESSION['pagecount']) . $_SERVER['REMOTE_ADDR']);
echo '<script language="javascript">';
echo 'document.cookie="JSEnabled=' . $js_cookie . '"';
echo '</script>';
echo '<meta http-equiv="refresh" content="0;url=http://example.com"/>';
}
?>
<?php
$js=$_COOKIE['JSEnabled'];
if ($js!=md5(md5(#$_SESSION['pagecount']-1) . $_SERVER['REMOTE_ADDR'])) {
$js_cookie=md5(md5(#$_SESSION['pagecount']) . $_SERVER['REMOTE_ADDR']);
echo '<script language="javascript">';
echo 'document.cookie="JSEnabled=' . $js_cookie . '"';
echo '</script>';
echo "</head><body>Sorry, this website needs javascript and cookies enabled.</body></html>";
die();
} else {
$js_cookie=md5(md5(#$_SESSION['pagecount']) . $_SERVER['REMOTE_ADDR']);
echo '<script language="javascript">';
echo 'document.cookie="JSEnabled=' . $js_cookie . '"';
echo '</script>';
}
?>
No one can use for example curl -H "Cookie: JSEnabled=XXXXXXXXXXXXXXXXXX"
because they don't know your algo of computing the hash.
This is the way I check whether javascript and cookies are enabled or not http://asdlog.com/Check_if_cookies_and_javascript_are_enabled
I copy/paste it here
<?
if($_SESSION['JSexe']){ //3rd check js
if($_COOKIE['JS']) setcookie('JS','JS',time()-1);//check on every page load
else header('Location: js.html');
} //2nd so far it's been server-side scripting. Client-side scripting must be executed once to set second cookie.
//Without JSexe, user with cookies and js enabled would be sent to js.html the first page load.
elseif($_COOKIE['PHP']) $_SESSION['JSexe'] = true;
else{ //1st check cookies
if($_GET['cookie']) header('Location: cookies.html');
else{
setcookie('PHP','PHP');
header('Location: '.$_SERVER['REQUEST_URI'].'?cookie=1');
}
}
?>
<head>
<script type="text/javascript">document.cookie = 'JS=JS'</script>
</head>
Recently, I had the following dilemma:
I use a PHP function that generates a QR image related to the current URL, which is very useful for mobile devices. The function works fine, but having my site on a shared hosting, there are some limits for CPU and RAM usage. This function is to heavy and it consumes a lot of CPU time and RAM, so the hosting guys asked me to decrease the usage.
After some tries, I finally reached the idea that I can save some CPU & RAM usage from search engine bots. It is difficult to recognize a bot by browser identification, but all the bots have no JS enabled and that's the main criteria I used to detect if it is a real browser or it is a bot. To explain how significant it is to prevent executing code which will not give anything more for Search Engines (QR, in my case, does not affect search engines), I can say that just Google bot for example makes about 16000 crawls a day on my site.
So I've made this very simple thing which helped a lot:
<script language="javascript"><!--
document.write('<?php echo drawQR($_SERVER["REQUEST_URI"]);?>');
//--></script>
This code uses JS to write a line of PHP code, so this line will be written only when JS is enabled.
Of couse you can use 'noscript' tag if you want to show something when JS is disabled, but this method shows how to execute some PHP only when JS is enabled.
Hope this helps.
Create a cookie using JavaScript and read it using PHP.
With this basic ajax you can separate data that the client see based on javascript or not.
index.php
<!DOCTYPE html>
<html>
<body>
<script>
function jsCheck() {
var xhttp;
if (window.XMLHttpRequest) {
// code for modern browsers
xhttp = new XMLHttpRequest();
} else {
// code for IE6, IE5
xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
document.getElementById("demo").innerHTML = xhttp.responseText;
}
};
xhttp.open("GET", "jscheckCon.php", true);
xhttp.send();
}
jsCheck();
</script>
<div id="demo">
no javascript
</div>
</body>
</html>
jscheckCon.php
<?php
echo 'we have javascript!';//you can do that you like to do with js!
?>
Please despite all the people telling you cant check for a client-side scripting technology. If the target technology has http functions, you can do ALWAYS, just write out a verify step. That means literally, the way to check javascript is to run javascript. If javascript is disabled on the browser side it's not possible to check if the client is Javascript capable (like Dillo with it's default config or others)
UPDATED: I've develop this script because i test some of the examples here and seems that everybody does copypasting without any sort of tests. Code is also on the Gist https://gist.github.com/erm3nda/4af114b520c7208f8f3f (updated)
//function to check for session after|before PHP version 5.4.0
function start_session() {
if(version_compare(phpversion(), "5.4.0") != -1){
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
} else {
if(session_id() == '') {
session_start();
}
}
}
// starting the function
start_session();
// create a script to run on the AJAX GET request from :P Javascript enabled browser
echo
'<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$.get(document.URL.substring(0, document.URL.length-1) + "?sessionstart=1");
console.log(document.URL.substring(0, document.URL.length-1) + "?sessionstart=1")}
</script>;
// Ajax GET request handle
if ($_REQUEST['sessionstart'] == 1){
$_SESSION['js'] = 1; // save into session variable
} else {
session_destroy(); // force reset the test. otherwise session
}
// If the session variable has not saved by the AJAX call, loads again.
if (!isset($_SESSION['js'])){
header("Refresh: 1"); // thats only for the first load
echo "Javascript is not enabled <br>"; // Return false
} else {
echo "Javascript is enabled <br>"; // Return true
}
This solution do not need more files, just a iteration if you run a Javascript capable browser. The value is passed back to PHP using a GET with a simple variable but anyone can fake the output doing cURL to url + ?sessionstart=1 unless you add more logic to it.
Make your main php page assume jscript is off, and add a <script> to redirect to the jscript-enabled app in the <head>. If the user actually uses your first page, assume jscript is off.
Other option:
If you dont' have to check if JS is enabled at the visitors first view (mainpage) you can set a cookie with js. On the next page you can check with php if the cookie is there...
You can use logic the logic (default/switch) - is this example I printed the variable in php:
PHP:
$js = 'No';
print 'Javascript Enabled: <span id="jsEnabled">'.$js.'</span>';
JS: (in my document ready)
jQuery('#jsEnabled').text('Yes'); or $('#jsEnabled').text('Yes');
You can set a cookie using Javascript and then reload the page using Javascript. Then using PHP you shall check if the cookie is setted, if it is Javascript is enabled!
Its 2013. Simply have your script render the non-js templates inside a body > noscript tag, then inside your CSS keep your main js site container div display: none; After that just put something like <script>$('#container').show();</script> immediately after you close you main #container div and before your noscript tag. (if you're using jquery of course).
Doing it this way will show the HTML for the non-js enabled browsers automatically, and then the js enabled browsers will only see the js site.
If you're worried about over-bloating the page size with too much mark up, then you could do the same but instead leave <div id="content"></div> empty, then with the js code instead of just showing the div use an ajax call to fetch the content for it.
On a side note, I would probably include additional css files for the non-js site within the noscript tag to save on bandwidth.
Since PHP is server side you can't know in PHP whether the client has Javascript enabled unless you use sessions (or some other way to store data across requests) and first send some code to which the client responds.
If you put the following at the start of your PHP file the client is redirected to the same URL with either 'js=0' or 'js=1' appended to the query string, depending on whether they have Javascript enabled or not. Upon receiving the redirected request the script records the result in a session variable and then redirects back to the original URL, i.e. without the appended 'js=0' or 'js=1'.Upon receiving this second redirect the script proceeds as normal, now with the session variable set according to the clients Javascript capability.
If you don't care about how your query string looks in the user's address bar you can skip the second redirect and just set the session variable. While these redirects are taking place the user is shown a short informative message (also something you could skip if you don't care about that).
<?php
session_start();
if (!isset($_SESSION['js']) && !isset($_GET['js'])) {
$url=$_SERVER['SCRIPT_URI'];
$qry='?'.($q=$_SERVER['QUERY_STRING']).($q?'&':'').'js';
die('<!DOCTYPE html><html lang="en"><head><meta charset="utf-8" /><title>js check</title>'.
'<script type="text/javascript">window.location.href="'.$url.$qry.'=1";</script>'.
'<noscript><meta http-equiv="refresh" content="0; url='.$url.$qry.'=0" /></noscript>'.
'</head><body>Hold on while we check whether you have Javascript enabled.</body></html>');
} elseif (isset($_GET['js'])) {
$_SESSION['js']=$_GET['js'];
$qry = preg_replace('%&?js=(0|1)$%', '', $_SERVER['QUERY_STRING']);
$url = $_SERVER['SCRIPT_URI'].($qry?'?':'').$qry;
die('<!DOCTYPE html><html lang="en"><head><meta charset="utf-8" /><title>js check</title>'.
'<meta http-equiv="refresh" content="0; url='.$url.$qry.'" />'.
'</head><body>Hold on while we check whether you have Javascript enabled.</body></html>');
}
if ($_SESSION['js']) {
//Javascript is enabled
} else {
//Javascript is disabled
}
?>
Yes.
Ensure you have the latest jQuery.js
//javascript
$(function(){
$('#jsEnabled2').html('Yes it is')
})
//php
$js - 'No';
$jscheck = 'Javascript Enabled: ';
$jscheck .= '<span id="jsEnabled">'.$js.'</span>';
print $jscheck;
I am using PHP conditions and want to know if I can run a JavaScript function without some one have to click on it using JavaScript:
if($value == 1)
{
JavaScript to run the function
}
How would I do that?
First of all keep in mind that your PHP code is evaluated on the server, while JavaScript runs in the browser on the client-side. These evaluations happen in different places, at different times. Therefore you cannot call a JavaScript function from PHP.
However with PHP you can render HTML and JavaScript code such that it is only rendered when your PHP condition is true. Maybe you may want to try something like this:
if($value == 1) {
echo "<script>";
echo "alert('This is an alert from JavaScript!');";
echo "</script>";
}
Javascript is client-side code, PHP is server-side, so you cannot execute javascript while building the page in PHP.
To execute javascript on the client-side as soon as the page has loaded, one way is to use the body onload handler to call your function:
<?php
echo '<script type="text/javascript">';
echo 'function myFunction(){ /* do_something_in_javascript */ };';
echo '</script>';
if ($value == 1) {
echo '<BODY onLoad="myFunction()">';
}
?>
Better yet, if you can afford the bandwidth, use jQuery and use $(document).ready():
<?php
if ($value == 1) {
echo '<script type="text/javascript">';
echo '$(document).ready(function(){ /* do_something_in_javascript */ });';
echo '</script>';
}
?>
I've found that you cannot do something like this in IE and other browsers. It does work in Firefox though. You have to echo out each line as posted in the other method.
<?php
if(somecondition)
{
?>
<script>
Some javascript code
</script>
<?php
}
?>
I know this thread is old but I just came across it and wanted to add my technique.
You can also echo the php variable into JavaScript and do something based on its value. I use it to place database values into js so the user can do math on the page with them
<script>
var jsvar = <?php echo $phpvar ;?>
if (jsvar = x){ do something...}
</script>
After some tinkering, I was able to get the following to work within a .php file.
This doesn't work in a .html file though.
<?php
if (isset($_SESSION['loggedin'])) {$login='t';}else{$login='f';}
?>
<script>
var login = "<?php echo $login ?>";
console.log(login);
if (login == 'f'){ .. do something..}
//this is in php.
function msgbox($msg, $type)
{
if ($type == "alert")
{
// Simple alert window
?> <script language="JavaScript"> alert("<? echo $msg; ?>"); </script> <?
}
elseif ($type == "confirm")
{
// Enter Confirm Code Here and assign the $result variable for use
// Should include "OK" and "Cancel" buttons.
?>
<script language="JavaScript">
if (confirm("<? echo $msg; ?>"))
{
<? $result == "ok"; ?>
}
else
{
<? $result == "cancel"; ?>
}
</script>
<?
}
}
if ($page_title->exists())
{msgbox("page exists,do you want to delete", "confirm");
}
if ($result == "ok")
//code..
The problem is that $result is not reading the value from the confirm box i think because the if clause is not being executed and the program flow is going where it would go without the if clause.
You have to understand when is your PHP and JavaScript code executed. First the server runs your PHP code. This generates HTML output, that gets passed to your browser and the browser executes the JavaScript code. This means that when you run confirm() in JavaScript, your PHP code is already finished (and probably serving another request).
You will need to rethink the user interaction.
(Btw, JSP means Java Servlet Pages, not JavaScript)