vue react 与原生 js jquery 渲染时间简单对比

2025-01-31 技术教程

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <script src="./js/vue.js"></script></head><body> <div id="app"> <ul> <li v-for="item in arrayData">{{item}}</li> </ul> </div> <script> var vm = new Vue({ el: "#app", data: () => ({ arrayData: ["e1", "e2", "e3", "e4"] }) }) </script></body></html>

vue 下载到了本地，那么渲染页面用了多长时间呢？
利用谷歌performance 可以看到

总共用了38.1ms

而用原生的js 达到同样效果

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title></head><body> <div id="app"> <ul id="ul"> </ul> </div> <script> var fragement = document.createDocumentFragment(); var arrayData = ["e1", "e2", "e3", "e4"]; for (var item in arrayData) { var li = document.createElement('li'); li.innerText = arrayData[item]; fragement.appendChild(li); } document.getElementById('ul').appendChild(fragement); </script></body></html>

用时多少呢？

仅仅只有 9.8ms 哦，
当然vue的优势在于mvvm的方式不能只通过这一项就说vue不好。
这个数据仅供参考

我们再来看下jquery

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title></head><body> <div id="app"> <ul id="ul"> </ul> </div> <script src="./js/jquery3.4.1.js"></script> <script> $(function () { var arrayData = ["e1", "e2", "e3", "e4"]; var html = "" arrayData.forEach((item) => { html += "<li>" + item + "</li>" }); $("#ul").append(html); }); </script></body></html>

11.8ms 可以说和原生js 很接近了

主要来看下react

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> //为了公平将资源下载到了本地  <script src="./js/react.16.8.6.js"></script> <script src="./js/reactDom16.8.6.js"></script>  <script src="./js/babel.min.js"></script></head><body> <div id="example"></div> <script type="text/babel"> var arrayData = ["e1", "e2", "e3", "e4"]; ReactDOM.render( arrayData.map((item,key)=>{ return <li key={key}>{item}</li> }), document.getElementById('example') ); </script></body></html>

164ms

比vue 的38ms几乎多了4倍！

结论：
单从网页引入的方式来看

耗费时间是 react>vue>jquery>js 的