JSONEditor = function(container, options, json) {
    // check availability of JSON parser (not available in IE7 and older)
    if (!JSON) {
        throw new Error(
            "鎮(zhèn)ㄥ綋鍓嶄嬌鐢ㄧ殑嫻忚鍣ㄤ笉鏀寔 JSON. \n\n" +
            "璇蜂笅杞藉畨瑁呮渶鏂扮増鏈殑嫻忚鍣?, 鏈珯鎺ㄨ崘Google Chrome.\n" +
            "(PS: 褰撳墠涓繪祦嫻忚鍣ㄩ兘鏀寔JSON)."
        );
    }

    if (!container) {
        throw new Error("娌℃湁鎻愪緵瀹瑰櫒鍏冪礌.");
    }
    this.container = container;
    this.dom = {};

    this._setOptions(options);