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This time I will show you how to use $refs in vue, and what are the precautions for using $refs in vue. The following is a practical case, let's take a look.
Generally speaking, to get DOM elements, you needdocument<a href="http://www.php.cn/code/658.html" target="_blank">.querySelector(".input1")</a>Get this
dom node, and then get it The value of input1.
javascript: this.$refs.input1 This can reduce the consumption of obtaining dom nodes
<p id="app"> <input type="text" ref="input1"/> <button @click="add">添加</button> </p>JS:
<script> new Vue({ el: "#app", methods:{ add:function(){ this.$refs.input1.value ="test"; //this.$refs.input1 减少获取dom节点的消耗 } } }) </script>The following will introduce the basic usage of vue $refs. The specific code is as follows:
<p id="app"> <input type="text" ref="input1"/> <button @click="add">添加</button> </p> <script> new Vue({ el: "#app", methods:{ add:function(){ this.$refs.input1.value ="22"; //this.$refs.input1 减少获取dom节点的消耗 } } }) </script>General To get the DOM element, you need
document.querySelector(".input1")Get the dom node, and then get the value of input1.
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