安全检测JavaScript基本数据类型和内置对象

安全检测JavaScript基本数据类型和内置对象

//参数: o表示检测的值
//返回值: 返回字符串 undefined number boolean string function regexp array date error object null
function typeOf(o){
    var _toString = Object.prototype.toString;
    var _type = {
        "undefined" : "undefined",
        "number" : "number",
        "string" : "string",
        "[object Function]" : "function",
        "[object RegExp" : "regexp",
        "[object Array]" : "array",
        "[object Date]" : "date",
        "[object Error]" : "error"
    }
    return _type[typeof(o)] || _type[_toString.call(o)] || (o ? "object" : "null")
}