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In this article Xiaobian for you to introduce in detail "vue how to use refs to get the value of nested components", detailed content, clear steps, details handled properly, I hope that this "vue how to use refs to get the value of nested components" article can help you solve doubts, the following follow the editor's ideas slowly in-depth, together to learn new knowledge.

Use refs to get the value of a nested component

Function introduction:

1. The parent component contains zujian1, while zujian1 contains zujian2.

2. Zujian2 binds an input parameter

3. The parent component gets the value in the input box through this.$refs. Component name to get the dom element, multiple layers of nesting, need to be adjusted multiple times

/ / record the benefits of this.inputValue=this.$refs.zujian1.$refs.zujian2.queryvue using ref for the value of the input box

When we need to access the subcomponents directly in JavaScript.

To do this, you can use ref to specify a reference ID for the subcomponent

Var parent = new Vue ({el:'# parent'}) / / access the subcomponent instance var child = parent.$refs.profileconsole.log (child) / /

This is the same as document.getElementById ("profile") for acquiring dom nodes, but using ref reduces the consumption of getting dom nodes.

When ref and v-for are used together, the obtained reference is an array of subcomponents corresponding to the circular data source.

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