js数组添加元素方法_js数组添加元素_当前讯息

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1、Click the button to add elements to the array.

2、Note: The unshift() method does not work properly in Internet Explorer 8 and earlier, the values will be inserted, but the return value will be undefined.

3、Click the button to add elements to the array.

4、Click the button to add a new element to the array.

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