Created
February 3, 2010 08:26
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JavaScript Micro-Templating
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// Simple JavaScript Templating | |
// John Resig - http://ejohn.org/ - MIT Licensed | |
// http://ejohn.org/blog/javascript-micro-templating/ | |
(function(){ | |
var cache = {}; | |
this.tmpl = function tmpl(str, data){ | |
// Figure out if we're getting a template, or if we need to | |
// load the template - and be sure to cache the result. | |
var fn = !/\W/.test(str) ? | |
cache[str] = cache[str] || | |
tmpl(document.getElementById(str).innerHTML) : | |
// Generate a reusable function that will serve as a template | |
// generator (and which will be cached). | |
new Function("obj", | |
"var p=[],print=function(){p.push.apply(p,arguments);};" + | |
// Introduce the data as local variables using with(){} | |
"with(obj){p.push('" + | |
// Convert the template into pure JavaScript | |
str | |
.replace(/[\r\t\n]/g, " ") | |
.split("<%").join("\t") | |
.replace(/((^|%>)[^\t]*)'/g, "$1\r") | |
.replace(/\t=(.*?)%>/g, "',$1,'") | |
.split("\t").join("');") | |
.split("%>").join("p.push('") | |
.split("\r").join("\\'") | |
+ "');}return p.join('');"); | |
// Provide some basic currying to the user | |
return data ? fn( data ) : fn; | |
}; | |
})(); | |
tmpl("Hello, <%= name %>!", {name: "world"}) | |
var hello = tmpl("Hello, <%= name %>!"); | |
hello({name: "world"}); |
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