语法格式:splice(index, len, [item])
可以用来替换/删除/添加数组内某一个值或几个值,该方法会改变初始数组。
index:数组开始下标
len:替换/删除的长度
item:替换的值,为删除时item为空
删除:
let arr = ['1','2','3','4'];
arr.splice(0,2);
console.log(arr.toString());
//3,4
替换:
let arr = ['1','2','3','4'];
arr.splice(0,2,['5','6','7']);
console.log(arr.toString());
//5,6,7,3,4
新增:
let arr = ['1','2','3','4'];
arr.splice(0,0,['5','6','7']);
console.log(arr.toString());
//5,6,7,1,2,3,4
标签:arr,Vue,console,log,toString,splice,let,方法
From: https://www.cnblogs.com/andy0816/p/16760194.html