How to capture commented HTML with JavaScript?

Question

I would like to know if it is possible to capture a commented remark using JavaScript.

The remark will look like this on the soruce code:

<div id='ContainerId'>
<!-- NON IDEAL REASON: 90 min time window depart arrive -->
<b>1,107.45 GBP</b><br />
<!--LLF: 1107.45 -->
</div>

I need to save that value (in this case 1107.45) inside a variable.

This doesn't seem to work:

var LLF = jQuery("contains('LLF')");

Any ideas?

Thanks!

There's an article about it here: jQuery Comments() Plug-in To Access HTML Comments For DOM Templating — WojtekT
– WojtekT, Commented May 25, 2012 at 14:46
Check out the following post, it may give you a head-start: Selecting HTML Comments with jQuery — Shant
– Shant, Commented May 25, 2012 at 14:46

gdoron · Accepted Answer · 2012-05-25 14:46:42Z

5

$('#ContainerId').contents().filter(function(){
    return this.nodeType === 8 // Comment node
});

Live DEMO

And the full code:

var comment = $('#ContainerId').contents().filter(function() {
    return this.nodeType === 8 // Comment node
})[0].nodeValue;

console.log(comment.match(/\d+\.\d+/g));

Live DEMO

answered May 25, 2012 at 14:46

gdoron

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2 Comments

fedxc Over a year ago

This is what I am looking for, thank you. Nevertheless, I realized that I have other commented lines under the same DIV, so it's capturing the first line instead of the desired one. How could I filter the node value? Edit: I have updated the source code to reflect the code in place.

fedxc Over a year ago

Sorry for my lame comment, just realized this: [0].nodeValue;

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