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August 17, 2012 14:43
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Using Underscore.js Templates To Render HTML Partials
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<!doctype html> | |
<html> | |
<head> | |
<meta charset="utf-8" /> | |
<title>Looking At Underscore.js Templates</title> | |
</head> | |
<body> | |
<h1> | |
Looking At Underscore.js Templates | |
</h1> | |
<!-- BEGIN: Underscore Template Definition. --> | |
<script type="text/template" class="template"> | |
<h2> | |
<%- rc.listTitle %> | |
</h2> | |
<ul> | |
<% _.each( rc.listItems, function( listItem ){ %> | |
<li> | |
<%- listItem.name %> | |
<% if ( listItem.hasOlympicGold ){ %> | |
<em>*</em> | |
<% } %> | |
</li> | |
<% }); %> | |
</ul> | |
<% var showFootnote = _.any( | |
_.pluck( rc.listItems, "hasOlympicGold" ) | |
); %> | |
<% if ( showFootnote ){ %> | |
<p style="font-size: 12px ;"> | |
<em>* Olympic gold medalist</em> | |
</p> | |
<% } %> | |
</script> | |
<!-- END: Underscore Template Definition. --> | |
<!-- Include and run scripts. --> | |
<script type="text/javascript" src="../jquery-1.8.0.js"></script> | |
<script type="text/javascript" src="../underscore.js"></script> | |
<script type="text/javascript"> | |
// When rending an underscore template, we want top-level | |
// variables to be referenced as part of an object. For | |
// technical reasons (scope-chain search), this speeds up | |
// rendering; however, more importantly, this also allows our | |
// templates to look / feel more like our server-side | |
// templates that use the rc (Request Context / Colletion) in | |
// order to render their markup. | |
_.templateSettings.variable = "rc"; | |
// Grab the HTML out of our template tag and pre-compile it. | |
var template = _.template( | |
$( "script.template" ).html() | |
); | |
// Define our render data (to be put into the "rc" variable). | |
var templateData = { | |
listTitle: "Olympic Volleyball Players", | |
listItems: [ | |
{ | |
name: "Misty May-Treanor", | |
hasOlympicGold: true | |
}, | |
{ | |
name: "Kerri Walsh Jennings", | |
hasOlympicGold: true | |
}, | |
{ | |
name: "Jennifer Kessy", | |
hasOlympicGold: false | |
}, | |
{ | |
name: "April Ross", | |
hasOlympicGold: false | |
} | |
] | |
}; | |
// Render the underscore template and inject it after the H1 | |
// in our current DOM. | |
$( "h1" ).after( | |
template( templateData ) | |
); | |
</script> | |
</body> | |
</html> |
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_.templateSettings.variable = "rc"; |
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