优化一下这个代码handleEdit(todo) { if(todo.hasOwnProperty('isEdit')){ todo.isEmit = true }else{ this.$set(todo,"isEdit",true), } },
时间: 2023-05-20 09:06:13 浏览: 88
可以将代码优化为:
handleEdit(todo) {
if (todo.hasOwnProperty('isEdit')) {
todo.isEmit = true;
} else {
this.$set(todo, "isEdit", true);
}
}
这样可以避免重复设置isEdit属性。
相关问题
帮我优化一下这个angular 代码 this.translate.store.onLangChange.subscribe( (lang: LangChangeEvent) => { const self = this;
可以尝试使用箭头函数简化代码:
```
this.translate.store.onLangChange.subscribe((lang: LangChangeEvent) => {
// 直接使用 this,不需要引入 self
// TODO: 处理语言变更逻辑
});
```
此外,如果在组件销毁时需要取消订阅,可以将订阅对象保存在组件中,然后在 `ngOnDestroy` 钩子中取消订阅,避免内存泄漏:
```
private langChangeSubscription: Subscription;
ngOnInit() {
this.langChangeSubscription = this.translate.store.onLangChange.subscribe((lang: LangChangeEvent) => {
// TODO: 处理语言变更逻辑
});
}
ngOnDestroy() {
if (this.langChangeSubscription) {
this.langChangeSubscription.unsubscribe();
}
}
```
this.todos.filter((t) => t !== todo)
This code is filtering out the specific "todo" item from the "todos" array. It is using the filter method, which creates a new array with all elements that pass the test implemented by the provided function. In this case, the test is checking if each "t" element is not equal to the "todo" item.
The arrow function syntax is used to define the function that is passed to the filter method. The "t" parameter represents each element in the "todos" array, and the !== operator checks if it is not equal to the "todo" item.
Overall, this code is removing the "todo" item from the "todos" array and returning a new array with all other items.
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