array 数组对象

concat()     - 例子：var arr1 = ['2','3',4],arr2 = [3,4,5,3],arr = arr1.concat(arr2);alert(arr);

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join()           －例子：var arr = ["我","爱","你","中","国"], str = arr.join("-");alert(str);

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pop()           var arr = ["我", "爱", "你", "中", "国"];str = arr.pop();alert(str); alert(arr);

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push()         var arr = ["我", "爱", "你", "中", "国"];var idx = arr.push("人");alert(idx); alert(arr);

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reverse()     var arr = ["我", "爱", "你", "中", "国"];var newArr = arr.reverse();alert(newArr);

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shift()            将第一个元素移出数组，其它元素向前推～

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slice(startIdx[,endIdx])  从数startIdx到endIdx中的数，原数组不变

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sort(function)  按指定方法排序

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splice(startidx[,deleteCount,val1,val2,...]) 从原数组中删除元素，并插入元素。

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toLocaleString()

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toString()

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unShift()   在首部插入新元素，所有元素向后移。