Vue's props enable child components to change together with the parent component
The example in this article shares with you Vue's props to implement changes in parent components and sub-components for your reference. The specific content is as follows
Similar to using v-bind to bind HTML features to an expression, you can also use v-bind to bind Define dynamic Props to the parent component's data. Whenever the data of the parent component changes, it will also be transmitted to the child component:
<div> <input v-model="parentMsg"> <br> <child v-bind:my-message="parentMsg"></child> </div>
It is usually simpler to use the abbreviated syntax of v-bind:
Instance:
<!DOCTYPE html>
<html lang="en">
<head>
<script type="text/javascript" src="vue.js"></script>
<meta charset="UTF-8">
<title>vue的props实现父组件变化子组件一起变化</title>
</head>
<body>
<div id="app1">
<input v-model="messsage" > <!--input绑定实例中data中的message-->
<div >
<child v-bind:my-message="messsage"></child> <!--子组件绑定实例中data中的message-->
</div>
</div>
<script>
Vue.config.debug = true;
Vue.component('child',{
props: ['myMessage'], //VUE实例中myMessage 等价于my-message
template: '<span>{{ myMessage }}</span><br>'
});
var vm = new Vue({
el: '#app1',
data:{
messsage:'hello you are a good boy!'
}
});
</script>
</body>
</html>
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