1.splice
js
var ary = [1,2,3,4];
ary.splice(0,ary.length);
console.log(ary); // 输出 [],空数组,即被清空了
2.**length赋值为0**
js
var ary = [1,2,3,4];
ary.length = 0;
console.log(ary); // 输出 [],空数组,即被清空了
3.**赋值为[]**
js
var ary = [1,2,3,4];
ary = []; // 赋值为一个空数组以达到清空原数组
发布者:admin,如若转载,请注明出处:https://ai1024.vip/39558.html