[routerLink]和routerLink之间的区别 [英] Difference between [routerLink] and routerLink

问题描述

[routerLink] 和 routerLink 有什么区别？

推荐答案

您会在所有指令中看到这一点：

You'll see this in all the directives:

使用方括号表示您正在传递可绑定的属性（变量）。

When you use brackets, it means you're passing a bindable property (a variable).

  <a [routerLink]="routerLinkVariable"></a>

因此可以在您的类中定义此变量（routerLinkVariable），并且其值应如下所示：

So this variable (routerLinkVariable) could be defined inside your class and it should have a value like below:

export class myComponent {

    public routerLinkVariable = "/home"; // the value of the variable is string!

但是有了变量，您就有机会使其变得动态吗？

But with variables, you have the opportunity to make it dynamic right?

export class myComponent {

    public routerLinkVariable = "/home"; // the value of the variable is string!


    updateRouterLinkVariable(){

        this.routerLinkVariable = '/about';
    }

在没有括号的情况下，您仅传递字符串，并且不能更改

Where as without brackets you're passing string only and you can't change it, it's hard coded and it'll be like that throughout your app.

<a routerLink="/home"></a>

UPDATE：

关于专门用于routerLink的括号的另一项特色是，您可以将动态参数传递到要导航到的链接：

The other speciality about using brackets specifically for routerLink is that you can pass dynamic parameters to the link you're navigating to:

因此添加一个新变量

export class myComponent {
        private dynamicParameter = '129';
        public routerLinkVariable = "/home"; 

更新[routerLink]

Updating the [routerLink]

  <a [routerLink]="[routerLinkVariable,dynamicParameter]"></a>

当您想单击此链接时，它将变为：

When you want to click on this link, it would become:

  <a href="/home/129"></a>

这篇关于[routerLink]和routerLink之间的区别的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！