Detailed introduction to the usage of ref ($refs) in Vue.js
This article mainly introduces a brief discussion on the usage of ref ($refs) in Vue.js with examples and summary. Now I will share it with you and give you a reference.
This article introduces a summary of the usage of ref ($refs) in Vue.js and shares it with everyone. The details are as follows:
Look at the ref part in the Vue.js document and summarize the ref yourself. How to use it for reference later.
1. Ref is used on external components
HTML part
<p id="ref-outside-component" v-on:click="consoleRef"> <component-father ref="outsideComponentRef"> </component-father> <p>ref在外面的组件上</p> </p>
js part
var refoutsidecomponentTem={
template:"<p class='childComp'><h5>我是子组件</h5></p>"
};
var refoutsidecomponent=new Vue({
el:"#ref-outside-component",
components:{
"component-father":refoutsidecomponentTem
},
methods:{
consoleRef:function () {
console.log(this); // #ref-outside-component vue实例
console.log(this.$refs.outsideComponentRef); // p.childComp vue实例
}
}
});2. Ref is used on the outer elements
HTML part
<!--ref在外面的元素上--> <p id="ref-outside-dom" v-on:click="consoleRef" > <component-father> </component-father> <p ref="outsideDomRef">ref在外面的元素上</p> </p>
JS part
var refoutsidedomTem={
template:"<p class='childComp'><h5>我是子组件</h5></p>"
};
var refoutsidedom=new Vue({
el:"#ref-outside-dom",
components:{
"component-father":refoutsidedomTem
},
methods:{
consoleRef:function () {
console.log(this); // #ref-outside-dom vue实例
console.log(this.$refs.outsideDomRef); // <p> ref在外面的元素上</p>
}
}
});3. Ref is used on the inner elements---partially Registered component
HTML part
<!--ref在里面的元素上--> <p id="ref-inside-dom"> <component-father> </component-father> <p>ref在里面的元素上</p> </p>
JS part
var refinsidedomTem={
template:"<p class='childComp' v-on:click='consoleRef'>" +
"<h5 ref='insideDomRef'>我是子组件</h5>" +
"</p>",
methods:{
consoleRef:function () {
console.log(this); // p.childComp vue实例
console.log(this.$refs.insideDomRef); // <h5 >我是子组件</h5>
}
}
};
var refinsidedom=new Vue({
el:"#ref-inside-dom",
components:{
"component-father":refinsidedomTem
}
});4. Ref is used on the elements inside---global registration component
HTML part
<!--ref在里面的元素上--全局注册--> <p id="ref-inside-dom-all"> <ref-inside-dom-quanjv></ref-inside-dom-quanjv> </p>
JS part
Vue.component("ref-inside-dom-quanjv",{
template:"<p class='insideFather'> " +
"<input type='text' ref='insideDomRefAll' v-on:input='showinsideDomRef'>" +
" <p>ref在里面的元素上--全局注册 </p> " +
"</p>",
methods:{
showinsideDomRef:function () {
console.log(this); //这里的this其实还是p.insideFather
console.log(this.$refs.insideDomRefAll); // <input type="text">
}
}
});
var refinsidedomall=new Vue({
el:"#ref-inside-dom-all"
});The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
Related articles:
How to set up multiple Classes using Vue
How to implement form validation using JQuery, what should be done specifically?
How to implement internationalization using Angular (detailed tutorial)
Send a request using the http module through nodejs (detailed tutorial)
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