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This article mainly introduces the specific use of ref in vue2. The editor thinks it is quite good. Now I will share it with you and give you a reference. Let’s follow the editor to take a look, I hope it can help everyone.
1. Let’s first define two components
html part
<p id="app"> <navbar ></navbar> <pagefooter ></pagefooter> </p>
js part
Vue.component('navbar',{ template:'<p>{{navs}}</p>', data:function () { return { navs:1 } } }); Vue.component('pagefooter',{ template:'<p>{{footer}}</p>', data:function () { return { footer:11 } } });
How to directly access the navs of navbar and the footer value of pagefooter here? This uses ref
2. Use of ref
Modify components
<p id="app"> <navbar ref="navbar"></navbar> <pagefooter ref="pagefooter"></pagefooter> </p> new Vue({ el:'#app', created:function(){ }, mounted:function () { this.$refs.navbar.navs=222 //ready, //这里怎么直接访问navbar的navs和pagefooter的footer值呢, console.log(this.$refs.navbar.navs); console.log(this.$refs.pagefooter.footer); } })
If you only use a common tag
<p ref="demo"></p>
, its function is the same as:
document.querySelector('[ref=demo]');
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