문자열 메소드_javascript 기술을 확장하는 Javascript 요약

复제대码 代码如下:

String.prototype.EndWith = 함수(str) {
    if (str == null || str == "" || this.length == 0 || str.length > this.length)
        return false;
    if (this.substring(this.length - str.length) == str)
        return true;
    else
        return false;
    return true;
}
String.prototype.StartWith = function (str) {
    if (str == null || str == "" || this.length == 0 || str.length > this.length)
        return false;
    if (this.substr(0, str.length) == str)
        return true;
    else
        return false;
    return true;
}
String.prototype.Trim = function () {
return this.replace(/(^s*)|(s*$)/g, "");
}
String.prototype.ltrim = function () {
    return this.replace(/ (^s*)/g, "");
}
String.prototype.rtrim = function () {
    return this.replace(/(s*$)/g, "");
}
String.format = 함수(str) {
    var i = 1, args = 인수;
    var str = args[0];
    var re = /{(d ) }/g;
    return str.replace(re, function () { return args[i ] });
};
var Json2string = function (obj) {
            var t = typeof ( obj);
            if (t != "객체" || obj === null) {
               // 단순 데이터 유형        
               if (t == "string") obj = "'" obj "'";
               return String(obj);
            }
           else {
                // 재귀 배열 또는 객체        
               var n, v, json = [], arr = (obj && obj.constructor == Array);                for (n in obj) {
                    v = obj[n]; t = typeof (v);
                    if (t == "string") v = "'" v "'";
                    else if (t == "object" && v !== null)
                      v = Json2string(v);
                  json.push((arr ? "" : "'" n "':") String(v));
               }
                반환(arr ? "[" : "{") 문자열(json) (arr ? "]" : "}");
            }
        };