js 数组，字符串，JSON，bind, Name

/**
 * 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);