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[Java教程][转]C#中的string.Format()的JS版本


 1 String.prototype.format = function (args) { 2       var result = this; 3       if (arguments.length > 0) { 4         var reg; 5         if (arguments.length == 1 && typeof (args) == "object") { 6           for (var key in args) { 7             if (args[key] != undefined) { 8               reg = new RegExp("({" + key + "})", "g"); 9               result = result.replace(reg, args[key]);10             }11           }12         }13         else {14           for (var i = 0; i < arguments.length; i++) {15             if (arguments[i] != undefined) {16               reg = new RegExp("({)" + i + "(})", "g");17               result = result.replace(reg, arguments[i]);18             }19           }20         }21       }22       return result;23     }24 25     window.onload = function() {26       var template1 = "我是{0},今年{1}了";27       var template2 = "我是{name},今年{age}了";28       var result1 = template1.format("loogn", 22);29       var result2 = template2.format({ name: "loogn", age: 22 });30     };

 

来源:http://www.cnblogs.com/loogn/archive/2011/06/20/2085165.html