标签：数据存储 char root static 问题 code 动画 comm world
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="./vue.js"></script>
<!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> -->
</head>
<body>
<div id="root">
<table>
<tbody>
<!-- <tr><td>1</td></tr>
<tr><td>2</td></tr>
<tr><td>3</td></tr> -->
<!-- //虽然会显示出来，但有问题 <br> -->
<row></row>
<row></row>
<row></row>
<!-- //可行 <br> -->
<tr is="row"></tr>
<tr is="row"></tr>
<tr is="row"></tr>
<!-- //可行 <br> -->
<ul>
<li is="list"></li>
<li is="list"></li>
<li is="list"></li>
</ul>
</tbody>
</table>
</div>
<script type="text/javascript">
Vue.component("row", {
template: "<tr><td>1</td></tr>"
});
Vue.component("list", {
template: "<li>1</li>"
});
var vm = new Vue({
el: "#root"
});
</script>
</body>
</html>
在子组件里定义data必须是函数，不能是对象（为了让子组件之间不共享数据，通过函数返回让每个子组件都有独立的数据存储）：
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="./vue.js"></script>
<!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> -->
</head>
<body>
<div id="root">
<table>
<tbody>
<tr is="row"></tr>
<tr is="row"></tr>
<tr is="row"></tr>
</tbody>
</table>
</div>
<script type="text/javascript">
Vue.component("row", {
/*//然而，在子组件，而不是根组件new Vue()中通过对象定义data是不可以的，而必须是函数
data: {
content: "this is a row"
},*/
//这才是正确的：
data: function() {
return {
content: "this is content"
}
},
template: "<tr><td>{{content}}</td></tr>"
});
Vue.component("list", {
template: "<li>1</li>"
});
var vm = new Vue({
el: "#root"
});
</script>
</body>
</html>vue不建议操作dom，但在处理一些复杂的动画效果，光靠vue的数据绑定并不一定能满足情况。vue中通过ref操作dom：
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="./vue.js"></script>
<!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> -->
</head>
<body>
<div id="root">
<div ref="hello" @click="handleClick">hello world</div>
</div>
<script type="text/javascript">
var vm = new Vue({
el: "#root",
methods: {
handleClick: function() {
//获取指定dom节点
console.log(this.$refs.hello.innerHTML)
}
}
});
</script>
</body>
</html>如果是获取组件的dom呢？
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="./vue.js"></script>
<!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> -->
</head>
<body>
<div id="root">
<counter ref="one" @change="handleChange"></counter>
<counter ref="two" @change="handleChange"></counter>
<div>{{total}}</div>
</div>
<script type="text/javascript">
Vue.component("counter", {
template: "<div @click=‘handleClick‘>{{number}}</div>",
data: function() {
return {
number: 0
}
},
methods: {
handleClick: function() {
this.number++
this.$emit("change")
}
}
})
var vm = new Vue({
el: "#root",
data: {
total: 0
},
methods: {
handleChange: function() {
/*console.log(this.$refs.one.number)
console.log(this.$refs.two.number)*/
this.total = this.$refs.one.number + this.$refs.two.number
}
}
});
</script>
</body>
</html>
标签：数据存储 char root static 问题 code 动画 comm world
原文地址：https://blog.51cto.com/5660061/2419334
