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This is the 'script' I want before the 'body' tag:
<script type="text/javascript">
var vglnk = { api_url: '//api.viglink.com/api',
key: '89dcd0a12ff35d227eaaaff82503030b' };
(function(d, t) {
var s = d.createElement(t); s.type = 'text/javascript'; s.async = true;
s.src = ('https:' == document.location.protocol ? vglnk.api_url :
'//cdn.viglink.com/api') + '/vglnk.js';
var r = d.getElementsByTagName(t)[0]; r.parentNode.insertBefore(s, r);
}(document, 'script'));
</script>
I want this code to be where I've put "HERE"
<html>
<head>
</head>
<body>
Some HTML and stuff
HERE
</body>
</html>
How would I go about this in jQuery? (I'm doing this from an extension. Mainly in Chrome, but also Firefox and Internet Explorer.)
946
asked Mar 25 '13 22:03
JavaScript in body or head: Scripts can be placed inside the body or the head section of an HTML page or inside both head and body.
The best practice is to put JavaScript <script> tags just before the closing </body> tag rather than in the <head> section of your HTML. The reason for this is that HTML loads from top to bottom. The head loads first, then the body, and then everything inside the body.
The <script> tag can be placed in the <head> section of your HTML or in the <body> section, depending on when you want the JavaScript to load. Generally, JavaScript code can go inside of the document <head> section in order to keep them contained and out of the main content of your HTML document.
We put the script elements at the end of the body, after all of the page's contents. This means the entire page will display as soon as it's available, and then the scripts will download to make things work.
You need the content script to do the insert on every page you want.
The code of the content script is really simple and doesn't need jQuery.
var code = "your script code here";
var script = document.createElement("script");
script.setAttribute("type", "text/javascript");
script.appendChild(document.createTextNode(code));
document.body.appendChild(script);
As it will only be called once you don't even need to define a function. You can debug the code using debugger on any web the content script is attaching (F12) you will see your code in the content script tab.
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