定义一个数组javascript
tags:any[];
方法1:filter
删除并不留空位java
this.tags = this.tags.filter(tag => tag !== removedTag);
方法2:splice
删除并不留空位git
const index = this.tags.indexOf(removedTag, 0); if (index > -1) { this.tags.splice(index, 1); }
方法3:remove
删除并留空位,会有empty占位github
const index = this.tags.indexOf(removedTag, 0); if (index > -1) { delete this.tags[index]; }
示例代码typescript
How do I remove an array item in TypeScript?
Deleting array elements in JavaScript - delete vs splice数组