vue-前端第5章event06.html
【代码】vue-前端第5章event06.html。
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>事件处理</title>
<style type="text/css">
div>div{
width: 128px;
height: 128px;
}
</style>
</head>
<body>
<div id="app">
<p>鼠标位于({{x}},{{y}})</p>
<p>背景色{{backgroundColor}}</p>
<div v-on:mousemove="mousemove" v-bind:style="{backgroundColor}"></div>
</div>
<script src="../js/vue.js"></script>
<script>
let vm = new Vue({
el:'#app',
data:{
x:0,
y:0,
},
methods:{
mousemove:function (event) {
this.x = event.offsetX;
this.y = event.offsetY;
}
},
computed:{
backgroundColor(){
const c = (this.x + this.y).toString(16);
return c.length == 2 ? `#${c}${c}${c}`:`#0${c}0${c}0${c}`;
}
}
});
</script>
</body>
</html>
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