javascript pushing element at the beginning of an array

2018-06-06 04:53:29

This question already has an answer here:

How can I add new array elements at the beginning of an array in JavaScript? 6 answers

使用unshift ，它通过将参数添加到开头来修改现有数组：

TheArray.unshift(TheNewObject);

Use .unshift() to add to the beginning of an array.

TheArray.unshift(TheNewObject);

See MDN for doc on unshift() and here for doc on other array methods.

FYI, just like there's .push() and .pop() for the end of the array, there's .shift() and .unshift() for the beginning of the array.

对于一个丑陋版本的unshift使用splice ：

TheArray.splice(0, 0, TheNewObject);

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