如何判断javascript中参数类型，对象类型。
一般：object.constructor == String ;(String 或者Number 等等 )
特殊：判断一个数组Array
方法1：
Object
.prototype.toString.apply(value) ===
'[object Array]'
方法2：
用jQuery，其实和方法1同。
$.isArray(object);
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