format

/*
两种调用方式
var template1 = "我是{0}，今年{1}了";
var template2 = "我是{name}，今年{age}了";
var result1 = template1.format("loogn", 22);
var result2 = template2.format({ name: "loogn", age: 22 });
*/
String.prototype.format = function (args) { var result = this; if (arguments.length > 0) { if (arguments.length == 1 && typeof (args) == "object") { for (var key in args) { if (args[key] != undefined) { var reg = new RegExp("({" + key + "})", "g"); result = result.replace(reg, args[key]) } } } else { for (var i = 0; i < arguments.length; i++) { if (arguments[i] != undefined) { var reg = new RegExp("({)" + i + "(})", "g"); result = result.replace(reg, arguments[i]) } } } } return result };