/**

 * Created by W.J.Chang on 2014/5/23.

 */

// 判读是否是数组的方法

console.log(Array.isArray(new Array));

console.log(Array.isArray([]));

var arr = [1,2,3];

// 遍历方法

arr.forEach(function (v){

   console.log(v);

});

console.log("---------------------");

// 过滤但不改变原数组

arr.filter(function (v){

    return v < 3;

}).forEach(function(v) {console.log(v);});

arr.forEach(function (v) {

    console.log(v);

});

console.log("---------------------");

// 改动但不改变原数组

arr.map(function (v){

    return v * 3;

}).forEach(function(v) {console.log(v);});

arr.forEach(function (v) {

    console.log(v);

});

console.log("---------------------");

[1,2,3].map(function(v){return v*2}).forEach(function(v) {console.log(v);});

//字符串

console.log("   hello    ".trim());

// JSON 处理

var obj = JSON.parse('{"a":"b","c":"d"}');

console.log(obj.a);

console.log(JSON.stringify(obj));

// bind 改变this的引用

function a(){

    this.hello == "world";

}

var b = a.bind({hello:'world'});

// name 函数名

var aa = function woot(){};

console.log(aa.name);