The click event cannot be triggered on a Vue sub-component instance?

in the following code (only part of the code), the sss key can trigger the click event function test, but the click event on the nav-item component cannot be triggered? I checked some materials, but I haven"t found the answer all the time.

but one solution is to throw a custom event inside the subcomponent, and then receive the event on the component instance, which can trigger the custom event, but it is difficult to understand if the click event cannot be triggered in this way, so I would like to ask you

< div id= "app" class= "content" >

        <div class="nav bg_red">
            <div class="nav_items">
                <nav-item v-for="item in nav_item_title" v-bind:key="item" v-bind:itemname="item" v-bind:class="["item-label","bg_red",{bg_white:current_page==item}]" v-on:click="test"></nav-item>
            </div>
            <button class="item-label bg_red" v-on:click="test">ssss</button>
        </div>
        <component v-bind:is="current_component"></component>
    </div>
    <script>
    Vue.component("nav-item",{
            props:["itemname"],
            template:"<button>{{itemname}}</button>",
            methods:{
                togg:function(){
                    this.$emit("toggle",this.itemname)
                },
                battle:function(){
                    alert(this.itemname);
                }
            }
        });
    var app=new Vue({
            el:"-sharpapp",
            data:{
                nav_item_title:["page1","page2","page3","page4"],
                current_page:"page1"
            },
            computed:{
                current_component:function(){
                    return "tab-"+this.current_page;
                }
            },
            methods:{
                activeitem:function(name){
                    this.current_page=name;
                },
                test:function(){
                    alert("this");
                }
            }
        });
        
        
        
        
Mar.20,2021

because nav-item is an instance of a custom component, you can only bind custom events by using on direct binding events, that is, events thrown by using emit ('name') within the component. If you bind native events on the subcomponent instance, you need to use the .native event modifier. Since button is not a custom component, you can bind native events directly and do not need to pass parameters


nav-item is not a native dom element, so there is no click event. You need to pass click as a props to internal elements, register click events on button, and call the incoming test method


child components to pass events to the parent component through emit. The parent component is not called through @ click. You should be @ toggle= "test"


< button @ click.native= "test" > Button < / button >

try event modification


is only half right. There is one situation, as mentioned above, and another is that even position, is not used in CSS. The reason is that it is misplaced, remove the location, and then use the ultimate solution to extend the components. For more information, please see the failure of VUe click events in duanshuiLu-resistant blogs

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