Vue侦听器

侦听器可以检测组件的点击次数

<template>
<div>
	<h1 :style="styleObj">点击次数:{{num}}</h1>
	<button @click="addClick">点击</button>
</div>
</template>

<script>
export default{
	name:'App',
	data:function(){
		return{
			num:0
		}
	},
	methods:{
		addClick:function(){
			this.num ++;
		}
	},
	watch:{  //监听器函数
	num:function(newValue,oldValue){
		console.log(newValue);
		console.log(oldValue);
		if(newValue>10){
			console.log("值大于10");
			this.styleObj = {
				backgroundColor:"red"
			}
			}
		}
	}
}
</script>

标签：function,Vue,console,log,侦听器,点击,num,newValue
来源： https://blog.csdn.net/sinat_33940108/article/details/112468339