Javascript Vue.js:简单的点击功能不触发

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时间:2020-08-23 01:46:29  来源:igfitidea点击:

Vue.js: Simple click function not firing

javascriptvue.jsvuejs2

提问by Jeremy Thomas

I have a very simple app:

我有一个非常简单的应用程序:

<div id="show_vue">
    <page-change page="bio" @click="changeThePage"></page-change>
    <page-change page="health" @click="changeThePage"></page-change>
    <page-change page="finance" @click="changeThePage"></page-change>
    <page-change page="images" @click="changeThePage"></page-change>
</div>

Vue.component("page-change", {
    template: "<button class='btn btn-success'>Button</button>",
    props: ["page"]
})

var clients = new Vue({
    el: '#show_vue',
    data: {
        currentRoute: window.location.href
    },
    methods: {
        changeThePage: function() {
            console.log("this is working")
        }
    }
})

...but when I click the <page-change></page-change>button, nothing is logged to the console. I know I'm missing something simple but I'm not getting any errors.

...但是当我单击<page-change></page-change>按钮时,控制台没有记录任何内容。我知道我错过了一些简单的东西,但我没有收到任何错误。

How do I make my click fire changeThePage

如何让我的点击火起来 changeThePage

回答by Happyriwan

When you do :

当你这样做时:

<page-change page="bio" @click="changeThePage"></page-change>

That means that your are waiting page-changecomponent emit the clickevent.

这意味着您正在等待page-change组件发出click事件。

Best solution (thanks to @aeharding) : Use .native event modifier

最佳解决方案(感谢@aeharding):使用 .native 事件修饰符

<page-change page="bio" @click.native="changeThePage"></page-change>

Solution 1 : emit click event from child component :

解决方案 1:从子组件发出 click 事件:

Vue.component("page-change", {
    template: "<button @click='clicked' class='btn btn-success'>Button</button>",
    props: ["page"],
    methods: {
       clicked: function(event) {
         this.$emit('click', this.page, event); 
       }
    }
})

For information eventis the default value passed by Vue for native event like click: DOM event

有关信息event是 Vue 为原生事件传递的默认值,例如clickDOM 事件

Solution 2 : emit directly from parent component :

解决方案 2:直接从父组件发出:

Vue.component("page-change", {
    template: "<button class='btn btn-success'>Button {{ page }}</button>",
    props: ["page"]
})

var clients = new Vue({
    el: '#show_vue',
    data: {
        currentRoute: window.location.href,
        pages: [
          'bio', 'health',
          'finance', 'images'
        ]
    },
    methods: {
        changeThePage: function(page, index) {
            console.log("this is working. Page:", page, '. Index:', index)
        }
    }
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.2.5/vue.js"></script>
<div id="show_vue">

  <span v-for="(page, index) in pages" :key="index+page"
        @click="changeThePage(page, index)">
  
    <page-change :page="page"></page-change>
    
  </span>

</div>

回答by aeharding

The best way to do this is to use the .nativeevent modifier.

最好的方法是使用.native事件修饰符。

For example:

例如:

<my-custom-component @click.native="login()">
  Login
</my-custom-component>

Source: https://vuejs.org/v2/guide/components.html#Binding-Native-Events-to-Components

来源:https: //vuejs.org/v2/guide/components.html#Binding-Native-Events-to-Components

回答by Kenneth Mwangi

apparently v-on:clickseems to work better with the .nativeevent modifier.

显然v-on:click,使用.native事件修饰符似乎效果更好。

try page="bio" v-on:click.native="changeThePage()"></page-change>. It worked for me.

试试page="bio" v-on:click.native="changeThePage()"></page-change>。它对我有用。