resig/index.js

JavaScript Micro-Templating from John Resig http://ejohn.org/blog/javascript-micro-templating/

module.exports = (function() {
  var cache = {};

  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;
  };

  return tmpl;
})();