JavaScript实现格式化字符串函数String.format

(function () {
 /// 

 /// 引号转义符号
 /// 
 String.EscapeChar = '\'';
 /// 

 /// 替换所有字符串
 /// 
 /// 检索值 
 /// 替换值 
 String.prototype.replaceAll = function (searchValue, replaceValue) {
 var regExp = new RegExp(searchValue, "g");
 return this.replace(regExp, replaceValue);
 }
 /// 

 /// 格式化字符串
 /// 
 String.prototype.format = function () {
 var regexp = /\{(\d+)\}/g;
 var args = arguments;
 var result = this.replace(regexp, function (m, i, o, n) {
 return args[i];
 });
 return result.replaceAll('%', String.EscapeChar);
 }
})();