How to add jQuery in JS file

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I have some code specific to sorting tables. Since the code is common in most pages I want to make a JS file which will have the code and all the pages using it can referen

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忘掉有多难

2020-12-04 06:07

The problem is you're using </script> within the script, which is ending the script tag. Try this:

document.writeln('<script src="/javascripts/jquery.js" type="text/javascript"></sc'+'ript>');
document.writeln('<script type="text/javascript" src="/javascripts/jquery.tablesorter.js"></sc'+'ript>');

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不思量自难忘°

2020-12-04 06:07

Dynamic adding jQuery, CSS from js file. When we added onload function to body we can use jQuery to create page from js file.

init();

function init()
{
	addJQuery();
	addBodyAndOnLoadScript();
	addCSS();
}

function addJQuery()
{
	var head = document.getElementsByTagName( 'head' )[0];
	var scriptjQuery = document.createElement( 'script' );
	scriptjQuery.type = 'text/javascript';
	scriptjQuery.id = 'jQuery'
	scriptjQuery.src = 'https://code.jquery.com/jquery-3.4.1.min.js';
	var script = document.getElementsByTagName( 'script' )[0];
	head.insertBefore(scriptjQuery, script);
}

function addBodyAndOnLoadScript()
{
	var body = document.createElement('body')
	body.onload = 
	function()
	{
		onloadFunction();
	};
}

function addCSS()
{
	var head = document.getElementsByTagName( 'head' )[0];
	var linkCss = document.createElement( 'link' );
	linkCss.rel = 'stylesheet';
	linkCss.href = 'E:/Temporary_files/temp_css.css';
	head.appendChild( linkCss );
}

function onloadFunction()
{
	var body = $( 'body' );
	body.append('<strong>Hello world</strong>');
}

html 
{
	background-color: #f5f5dc;
}

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8">
		<title>Temp Study HTML Page</title>
		<script type="text/javascript" src="E:\Temporary_files\temp_script.js"></script>
	</head>
	<body></body>
</html>

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我寻月下人不归

2020-12-04 06:07

var jQueryScript = document.createElement('script');  
jQueryScript.setAttribute('src','https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js');
document.head.appendChild(jQueryScript);

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礼貌的吻别

2020-12-04 06:08

Theres a plugin for jquery where you can just include the files you need into some other js file, here is the link for it http://tobiasz123.wordpress.com/2007/08/01/include-script-inclusion-jquery-plugin/.

Also this document.write line will write the script tags in the html not in your js file.

So I hope this could help you out, a little with your problem

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别跟我提以往

2020-12-04 06:09
After lots of research, I solve this issue with hint from ofir_aghai answer about script load event.

Basically we need to use $ for jQuery code, but we can't use it till jQuery is loaded. I used document.createElement() to add a script for jQuery, but the issue is that it takes time to load while the next statement in JavaScript using $ fails. So, I used the below solution.

myscript.js is having code which uses jQuery main.js is used to load both jquery.min.js and myscript.js files making sure that jQuery is loaded.

main.js code
```
window.load = loadJQueryFile();
var heads = document.getElementsByTagName('head');

function loadJQueryFile(){
    var jqueryScript=document.createElement('script');
    jqueryScript.setAttribute("type","text/javascript");
    jqueryScript.setAttribute("src", "/js/jquery.min.js");

    jqueryScript.onreadystatechange = handler;
    jqueryScript.onload = handler;  
    heads[0].appendChild(jqueryScript);
}

function handler(){
    var myScriptFile=document.createElement('script');
    myScriptFile.setAttribute("type","text/javascript");
    myScriptFile.setAttribute("src", "myscript.js");
    heads[0].appendChild(myScriptFile);
 }
```
This way it worked. Using loadJQueryFile() from myscript.js didn't work. It immediately goes to the next statement which uses $.
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不思量自难忘°

2020-12-04 06:11

Why are you using Javascript to write the script tags? Simply add the script tags to your head section. So your document will look something like this:

<html>
  <head>
    <!-- Whatever you want here -->
    <script src="/javascripts/jquery.js" type="text/javascript"></script>
    <script src="/javascripts/jquery.tablesorter.js" type="text/javascript"></script>
  </head>
  <body>
    The contents of the page.
  </body>
</html>

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