jquery, how to define a dom template and use it over and over again

How do I use some dom as a template, so something like

<div>
    <span> v1 </span>
    开发者_StackOverflow社区<span> v2 </span>
    <span> v3 </span>
</div>

and then programmatically replace v1-v3 with some values (that i get off an xhr repsonse)

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You can do something like this:

$template = $('<div><span>v1</span><span>v2</span><span>v3</span></div>');

$new_dom_element = $template.clone();
// do your thing with replacing the content.

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You can simply store it as a string, then drop it in a jQuery object whenever you need a new copy.

Once it is part of a jQuery object, you can traverse it just like it was already in the DOM, and update its content.

Something like this: http://jsfiddle.net/bZz96/

var div_template = "<div><span> v1 </span><span> v2 </span><span> v3 </span></div>";

$(div_template).find('span')
    .text( function(i) { return 'some new value ' + i; } )
    .end().appendTo('body');

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Mustache.js is really good for this.

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Microsoft is building a JQuery plugin (it might be incorporated into JQuery) for templates.

Microsoft, jQuery, and Templating

I'm still waiting to see if anything happens with it, but it seems promising. I just looked at the github repository and it looks like there have been some recent changes (within the last several days), so it's still in progress.