ie6/7/8 window.JSON

☆.以下代码来自于MOZILLA开发者网络

if(!window.JSON){
        window.JSON = {
            parse: function(sJSON){
                return eval("(" + sJSON + ")");
            },
            stringify: function(vContent){
                if(vContent instanceof Object){
                    var sOutput = "";
                    if(vContent.constructor === Array){
                        for(var nId = 0; nId < vContent.length; sOutput += this.stringify(vContent[nId]) + ",", nId++);
                        return "[" + sOutput.substr(0, sOutput.length - 1) + "]";
                    }
                    if(vContent.toString !== Object.prototype.toString){
                        return "\"" + vContent.toString().replace(/"/g, "\\$&") + "\"";
                    }
                    for(var sProp in vContent){
                        sOutput += "\"" + sProp.replace(/"/g, "\\$&") + "\":" + this.stringify(vContent[sProp]) + ",";
                    }
                    return "{" + sOutput.substr(0, sOutput.length - 1) + "}";
                }
                return typeof vContent === "string" ? "\"" + vContent.replace(/"/g, "\\$&") + "\"" : String(vContent);
            }
        };
    }