How to remove all the elements from array

2018-06-07 20:45:37

This question already has an answer here:

How do I empty an array in JavaScript? 18 answers

a.length = 0;

这就是你所需要的

var a = [2,3,4,5,6];
console.log(a);
a.length = 0;
console.log(a);

Do a.length = 0; if you don't want to lose references. Do a = []; if you want to lose references.

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