js判断类型
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/**
* 判断类型
*/
function typeOf(o){
var type = Object.prototype.toString.call(o);
var name = type.substring(1,type.length-1).split(" ")[1].toLowerCase();
return {
type:type,
name:name,
isNull:function(){
return this.name==="null";
},
isUndefined:function(){
return this.name==="undefined";
},
isNumber:function(){
return this.name==="number";
},
isBoolean:function(){
return this.name==="boolean";
},
isString:function(){
return this.name==="string";
},
isObject:function(){
return this.name==="object";
},
isArray:function(){
return this.name==="array";
},
isFunction:function(){
return this.name==="function";
}
};
}
var func = function fn(){}
var types = [null,undefined,1,true,"Pheker",{name:"zhang"},[1],func];
types.map(function(v,i){
console.log(typeOf(v).name);
})
console.log(typeOf(types[0]).isNull())
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