首先看问题
移动端web相关
屏幕是375*667
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><!-- <meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=0" /> --><meta name="viewport" content="width=device-width, initial-scale=2.0" /><title>Document</title><style>* {margin: 0;}#test {height: 100px;background-color: aquamarine;}</style></head><body><div id="test"></div><script>let div = document.getElementById("test");console.log(window.innerWidth); //375console.log(document.documentElement.clientWidth); //375div.style.width = 970 + "px";console.log(window.innerWidth); //971console.log(document.documentElement.clientWidth); //375</script></body>
</html>
此代码在桌面端正常，在移动端有些异常，移动端的window.innerWidth不是视口大小，会变化
解决办法就是<meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=0" />，添加user-scalable=0
