Javascript 重用冗余函数和html
我有以下代码: rightside.component.ts:Javascript 重用冗余函数和html,javascript,html,angular,typescript,reusability,Javascript,Html,Angular,Typescript,Reusability,我有以下代码: rightside.component.ts: import { Component, Input, ChangeDetectionStrategy, ChangeDetectorRef, Output, EventEmitter } from '@angular/core'; import { DataService } from '../../shared/service/data.service'; import { TreeNode } from '../../share
import { Component, Input, ChangeDetectionStrategy, ChangeDetectorRef, Output, EventEmitter } from '@angular/core';
import { DataService } from '../../shared/service/data.service';
import { TreeNode } from '../../shared/dto/TreeNode';
import html from './rightside.component.html';
import css from './rightside.component.css';
@Component({
selector: 'rightside-component',
template: html,
providers: [DataService],
styles: [css],
changeDetection: ChangeDetectionStrategy.OnPush
})
export class RightSideComponent {
@Input() treeNode: TreeNode<string>[];
@Input() sliceTreeNode: TreeNode<string>[];
@Output() deselected = new EventEmitter<TreeNode<string>>();
constructor(private cd: ChangeDetectorRef) {}
public getSelections() : TreeNode<string>[] {
if (typeof(this.treeNode) == "undefined" || (this.treeNode) === null) {
return [];
}
return this.treeNode;
}
public getSlices() : TreeNode<string>[] {
if (typeof(this.sliceTreeNode) == "undefined" || (this.sliceTreeNode) === null) {
return [];
}
return this.sliceTreeNode;
}
public deselect(item: TreeNode<string>):void {
this.deselected.emit(item);
}
}
从'@angular/core'导入{Component,Input,ChangeDetectionStrategy,ChangeDetectorRef,Output,EventEmitter};
从“../../shared/service/data.service”导入{DataService};
从“../../shared/dto/TreeNode”导入{TreeNode};
从“./rightside.component.html”导入html;
从“/rightside.component.css”导入css;
@组成部分({
选择器:'右侧组件',
模板:html,
提供者:[数据服务],
样式:[css],
changeDetection:ChangeDetectionStrategy.OnPush
})
导出类RightSideComponent{
@Input()树节点:树节点[];
@Input()切片树节点:树节点[];
@Output()取消选择=新建EventEmitter();
构造函数(私有cd:ChangeDetectorRef){}
公共getSelections():TreeNode[]{
if(typeof(this.treeNode)=“undefined”| |(this.treeNode)==null){
返回[];
}
返回这个.treeNode;
}
public getSlices():TreeNode[]{
if(typeof(this.sliceTreeNode)=“undefined”| |(this.sliceTreeNode)==null){
返回[];
}
返回此.sliceTreeNode;
}
公共取消选择(项目:TreeNode):无效{
此。取消选择。发射(项);
}
}
rightside.component.html:
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<ul class="selection-list">
<li *ngFor="let item of getSelections()">
<button class="btn" (click)="deselect(item)" *ngIf="item.selected">
<i class="fa fa-close"> {{ item.displayName }} </i>
</button>
</li>
</ul>
<ul class="selection-list" >
<li *ngFor="let item of getSlices()">
<button class="btn" (click)="deselect(item)" *ngIf="item.selected">
<i class="fa fa-close"> {{ item.displayName }} </i>
</button>
</li>
</ul>
-
-
{{item.displayName}}
正如在上面的代码中所看到的,我基本上对两个不同的输入执行相同的操作-treeNode和sliceTreeNode。我从两个独立的组件获取这两个输入
如何修改代码以实现更好的重用性?我目前不能只使用一个函数来代替冗余函数,因为它们返回不同的东西
另外,如何重用HTML代码
非常感谢您的帮助。您可以编写一个将
树节点[]
作为参数的方法:
公共getSlices(节点:TreeNode[]):TreeNode[]{
//操作节点变量而不是实例的属性
...
}