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performance-webx.html
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performance-webx.html
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<!DOCTYPE html>
<html>
<head>
<title>performance test</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<script>
let testcase="webx";//"webx" "vue";
</script>
<script src="./js/performance.js" type="text/javascript"></script>
<script>
let count=0;
let base_id=0;
const list = gen_list(20000);
function gen_list(size){
let res=[];
count+=Math.max(size,0);
for (let i = 0; i < size; i++) {
res.push(
{
id:++base_id,
color:"#"+Math.random().toString(16).slice(2,5),
text: Math.random().toString(36).slice(2, 10),
children:gen_list(Math.pow(size,0.22)-7|0)
}
);
}
return res;
}
console.log("total nodes : " + count);
</script>
<div id="vue_demo"></div>
<script>
Vue.component(
"Tree",
{
props: ['data'],
methods:{
update(i){
this.data[i].text=Math.random().toString(36);
this.data[i].color="#"+Math.random().toString(16).slice(2,5);
},
attach(i){
this.data[i].children.push(gen_list(1)[0]);
}
},
beforeUpdate(){
this.data===list&&console.time("vue update");
},
updated(){
this.data===list&&console.timeEnd("vue update");
},
template:`
<ul>
<li v-for="(item,i) in data" :key="item.id">
<!--
vue 如果放弃这条渲染二级节点以下的的变更响应将会快很多
（二级短列表的变更不会导致上级列表整个生成 vdom 做整个对比）
不过顶级列表项的变更同样会导致整个 vdom 生成和对比
-->
<var>{{JSON.stringify(item)}}</var>
<br/>
<button :style={color:item.color} @click="update(i)">{{item.text}}</button>
<button @click="attach(i)">+</button>
<Tree v-if="item.children.length" :data="item.children"/>
</li>
</ul>`,
data(){
return {};
}
}
);
if(testcase==="vue"){
new Vue({
el:'#vue_demo',
template:`
<div>
<button @click="data.unshift(gen_list(1)[0])">+</button>
<Tree :data="data"/>
</div>
`,
created(){
console.time("vue_demo");
},
mounted(){
console.timeEnd("vue_demo");
},
data(){
return {
gen_list:gen_list,
data:list
}
}
})
}
</script>
<script id="webx_demo" type="text/babel">
let data = list;
console.time("webx_demo");
document.body.appendChild(
<button onclick=function (){
console.time("webx update");
data.unshift(gen_list(1)[0]);
console.timeEnd("webx update");
}>+</button>
);
document.body.appendChild(<Tree data=@(data)/>);
function Tree({data}){
return <ul>
@:for(let item of data){
<li>
<var>@{JSON.stringify(item)}</var>
<br/>
<button
style=@(`color:${item.color};`)
onclick=function(e){
console.time("webx update");
item.color="#"+Math.random().toString(16).slice(2,5);
item.text=Math.random().toString(36);
console.timeEnd("webx update");
}
>@{item.text}</button>
<button
onclick=function(){
console.time("webx update");
item.children.push(gen_list(1)[0]);
console.timeEnd("webx update");
}
>+</button>
@:if(item.children.length){
<Tree data=@(item.children)/>
}
</li>
}
</ul>
}
console.timeEnd("webx_demo");
</script>
<script>
if(testcase==="webx"){
eval(webx(webx_demo.innerText));
}
</script>
</body>
</html>