javascript - console.log(["2","3"].push("1")) Why is the result 3

Question

javascript

世界只因有你 · Answer

push() 方法可向数组的末尾添加一个或多个元素，并返回新的长度。

3 is actually the length of the new array.

ringa_lee · Answer

Experiment yourself, push execution will return the length of the array

PHP中文网 · Answer

What is printed is push的返回值，pushreturning the new length

给我你的怀抱 · Answer

push() adds one or more elements to the end of the array and returns the new length.

Reference http://www.w3school.com.cn/js...

高洛峰 · Answer

The

push() method adds one or more elements to the end of the array and returns the new length of the array, so what is printed is the length of the array.

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