数组为list,要删除的项为item.id
方法1
let index = this.list.indexOf(item.id); if(index>-1){ this.list.splice(index,1); }
方法2
this.list.splice(this.list.findIndex(value=>value===item.id),1);
将数组变成字符串
let list = this.list.toString();
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