Optimizing css delivery in pagespeed insights not loading the css file.
I have tried loading the css file by using jquery but the problem is css is not loading.
My code:
<script type="text/javascript">
$(document).ready(function(){
if($(".bs-example").size()>0){
if (document.createStyleSheet){
document.createStyleSheet('<?php echo base_url();?>theme/css/style.css');
}
else {
$("head").append($("<link rel='stylesheet' href='<?php echo base_url();?>theme/css/style.css' type='text/css' media='screen' />"));
}
}
});
HTML:
<body>
<div class="bs-example"></div>
CSS assets should be included in the HTML header document with <link> tag.
While JS assets, including JQuery Ready function should be after the </body> closing tag.
<!DOCTYPE html>
<html>
<head>
<title>Website</title>
<link rel="path/to/css/file"/>
<style>
/*your custom CSS*/
</style>
</head>
<body>
HTML Body
</body>
<script src="https://code.jquery.com/jquery-3.2.1.js"/>
<script>
$(document).ready(function(){
/*code*/
});
</script>
</html>
This way, the CSS will be delivered first, and JQuery Ready function will only be executed after it detect that the page DOM has all been loaded and it's safe to run the JavaScript inside. JQuery Ready function.
Related
In this link, https://editor.p5js.org/, there are three files, html, javascript and css.
I duplicate those files on my own computer and then run it with Chrome browser. It does not render anything. However, when I run this page with a web server, Xampp, it runs successfully. What are the reasons?
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.4.0/p5.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.4.0/addons/p5.sound.min.js"></script>
<link rel="stylesheet" type="text/css" href="style.css">
<meta charset="utf-8" />
</head>
<body>
<script src="sketch.js"></script>
</body>
</html>
function setup() {
createCanvas(400, 400);
}
function draw() {
background(220);
}
html, body {
margin: 0;
padding: 0;
}
canvas {
display: block;
}
Put your <script> tag into the head tag of your html
https://p5js.org/get-started/ page
like :
<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/p5#1.4.0/lib/p5.js"></script>
<script src="sketch.js"></script>
</head>
<body>
<main>
</main>
</body>
</html>
It worked for me over Google Chrome
It MIGHT be CORS, CORS is usually for images & sound files & stuff like that, but maybe it's different in google chrome, you should google how to disable it in google chrome and see what works for you, i think it's something with the shortcut, not sure. Browser should also throw a crap tone of things into your console about CORS.
otherwise maybe your files are in wrong locations, everything should be under a single folder:
jsProject:
sketch.js
index.html
style.css
Maybe someone already had the problem like mine - I want to use the Simple init DateTimePicker from this example . I created a simple php page:
<html>
<head>
<script src="js/jquery.js"></script>
<script src="js/jquery.datetimepicker.js"></script>
<link rel="stylesheet" type="text/css" href="css/jquery.datetimepicker.css" />
<script>
jQuery('#datetimepicker').datetimepicker();
</script>
</head>
<body>
<input id="datetimepicker" type="text" >
</body>
</html>
I also put the jquery.datetimepicker.js and jquery.js in the js folder, same with css, however after refreshing the page - all I see is the empty input field and the datepicker doesn't show up. What am I doing wrong?
Use document.ready function and make sure js are included correctly
<script>
jQuery(document).ready(function(){
jQuery('#datetimepicker').datetimepicker();
});
</script>
I have a lot of server code (PHP) going on in my first page of the Facebook app.
I wan't the users to see a loading animation while waiting for the page.
I've seen many examples here of how to preload a page (using ajax or simply jQuery) but this is different, as I said, the page itself is generated on the server, and while that goes on, the user only sees a white blank page.
I tried to wrap my main page with another php page:
<?php
include_once 'functions.php';
session_start();
$_SESSION['fb'] = new fb();
function phponload(){
echo
'<script>
$(function(){
$("#mwrapper").load("main.php");
});
</script>';
}
?>
<html>
<head>
<script type="text/javascript">
function delayer(){
document.write("<?php phponload();?>");
}
</script>
<link href='styles/default.css' rel='stylesheet' type='text/css' />
<img class='mainload' src='images/loading.gif'></img>
<script src='//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js'></script>
<link rel='stylesheet' type='text/css' href='plugins/clock/clock.css' />
</head>
<body onload='setTimeout("delayer()",1000);'>
<div id='mwrapper'>
</div>
</body>
</html>
now the main php page (main.php) has something like:
<!DOCTYPE html>
<html xmlns:fb="http://ogp.me/ns/fb#">
<meta name="google-site-verification" content="Hyqgg60NTPNA7Q9Z5y9TtezUmwhiEomwZLJDt43Ki2g" />
<!--<img class='mainload' src='images/loading.gif'></img>-->
<?php
include_once 'functions.php';
include 'res/views/getTables.php';
define('TXT_QUESTIONS_NUM', 43);
session_start();
{... more PHP code ... }
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js"> </script>
<script src='scripts/menuItems.js'></script>
<script src='scripts/main.js'></script>
<link href='styles/jquery.ui.smooth.theme.css' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="plugins/clock/clock.js"></script>
<link rel="icon" href="images/favicon.ico">
</head>
<div class='container' id='main'>
...
</div>
</body>
</html>
Right now, all the code does is loop the GIF - but does not load main.php :(
Thank you!
Is there any error on the Chrome/Firebug console?
I don't understand why you generate the loader JS code in the PHP function (you could put it directly in HTML), but by doing so you are putting a multiline block between the quotes on document.write function, which causes an error.
However, I think the issue is that the browser is interpreting the inserted </script> as the end of the HTML tag, so what's after (the end of the document.write call and the delayer function) are treated as HTML and not as Javascript.
EDIT: Complementing the answer, here's the code I'd use to load another page:
function delayer(){
$("#mwrapper").load("main.php", function(){
$('.mainload').remove();
});
}
Didn't need any PHP generation. Also, the second argument to the load function is a callback called when the load is finish, in this case I used to remove the loading GIF.
i am preparing a jquerymobile app, in which i want to insert a jqplotchart, so that i wrote code for that. but now problem is chart is not being displayed in my page.
libraries i
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<meta name="apple-mobile-web-app-capable" content="yes"/>
<link rel="stylesheet" href="stylesheets/jquery.mobile-1.1.1.min.css" type="text/css"/>
<link rel="stylesheet" href="stylesheets/jquery.jqplot.css" type="text/css"/>
<link rel="stylesheet" href="stylesheets/jqm-docs.css" type="text/css"/>
<script src="jquery.jqplot.min.js" type="text/javascript"></script>
<script src="jqplot.pieRenderer.min.js" type="text/javascript"></script>
<script src="jqplot.barRenderer.min.js" type="text/javascript"></script>
<script src="jqplot.categoryAxisRenderer.min.js" type="text/javascript"></script>
<script src="underscore-min.js" type="text/javascript"></script>
<script src="hideAddressBar.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<script type="text/javascript" src="jquery-1.8.2.min.js"></script>
<script type="text/javascript" src="jquery.dataTables.min.js"></script>
<script type="text/javascript" src="jquery.mobile-1.2.0.min.js"></script>
<script type="text/javascript" src="jqm-docs.js"></script>
<script type="text/javascript" src="jquery.flot.min.js"></script>
<script type="text/javascript" src="JQPlot/plugins/jqplot.canvasAxisLabelRenderer.min.js"></script>
<script type="text/javascript" src="JQPlot/plugins/jqplot.canvasTextRenderer.min.js"></script>
javascript i written:
$(document).bind("mobileinit",function() {
// go to server for chart data
$('#pagePlotChart').live('pageshow',function() {
$.get("mygraphdata", function(data){
$.jqplot('plotChart', data,{
title:'My Chart',
axesDefaults:
{
labelRenderer: $.jqplot.CanvasAxisLabelRenderer
},
axes:
{ xaxis: { label:"Day", pad: 0 },
yaxis: { label: "Measurement" }
}
});
});
return false;
});
});
html code:
<div id="pagePlotChart" data-role="page" data-rockncoder-jspage="managePlotChart">
<header data-role="header" data-position="fixed">
<h1>Plot Chart</h1>
</header>
<section data-role="content">
<div id="plotChart" class="myChart"></div>
<button id="refreshPlotChart" value="Refresh Chart" data-mini="true"></button>
</section>
</div>
actually i have to take json data from some php file and pass to this chart. and chart shuld display the graph by using that json data from some php file.
my json data will be in this formate ["v1:myName","g:233","h:322"]..etc.
php file is sending json data. i checked in fidler. but chart is not working.
please tell me solution for this.
First of all I notice you are loading jQuery mobile twice in your page header. Try removing the older version, and moving most or all of your JS includes to the page footer, that way your page can (partially) render before the JS files are downloaded by the browser. Best practice for the jqplot components is certainly to move includes to the footer.
The actual order of loading the jqplot components is almost right. It looks like the main jQuery file needs to be loaded before the main jqplot file, though - right now only the mobile version of jQuery is loading before jqplot. Please see this answer for more detail.
If jqplot is loading but the data is not present, or possibly the data or chart code has a bug, you will see a blank space in the page where the chart should be. Make sure that you can load a static chart page hand-assembled with the data you are getting from your PHP page. This will test the data and the includes.
If jqplot is not loading at all (for example if dependencies are not loaded in correct order) you will not see any empty space for the chart at all on your page and it will be rendered with zero space where the chart should be.
It looks like you are calling the chart div correctly. However I am not sure if $(document).bind("mobileinit",function() is working. The base call for jqplot is normally
$(document).ready(function(). Setting up charts in divs that aren't initially visible when the page is rendered can be tricky. This question might help if that's what the problem is.
See this related question about jQuery Mobile rendering content after page is initialized. Basically you can use .trigger('create') per naugtur's comment.
There is an easier way (worked in my case):
-first: delare your plot container div outside of any page (for example just below body tag):
<body>
<div id="plotContainer"></div>
...
-then: set the plot (Chart) in your $(document).ready(function(){ ... here ... }); and hide it so it will not show between pages:
$("#jqxChart").jqxChart(settings);
$("#jqxChart").hide();
-finaly: just copy the div with the plot inside your page:
<script>
$('#page_ID').bind('pageshow', function(data) {
$("#jqxChart").appendTo("#ID_of_DIV_you_want");
$("#jqxChart").show();
$('#jqxChart').jqxChart('refresh');
});
</script>
Hope this helps!!!
I use the following datepicker.php page for jquery datepicker is given below:
<!DOCTYPE html>
<html>
<head>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js"></script>
</script>
<script>
$(function() {
$( "#datepicker" ).datepicker();
});
</script>
</head>
<body style="font-size:62.5%;">
<input type="text" id="datepicker" />
</body>
</html>
it is working well as a single page but when i use this page from another page using include (datepicker.php) method then the datepicker is not working. How can I solve this?
Because this function used only one page if you use datepicker on another page then define function on another page.
You should not be including a full HTML document within another HTML document. The result is not a valid webpage.