当我单击浏览器窗口的最大化按钮时,我编写的一个将在调整窗口大小时执行的函数无法正常工作,我认为是因为 JavaScript 窗口调整大小事件运行缓慢。当我使用鼠标调整窗口大小时,它起作用了。此外,当我尝试在纵向移动和横向移动之间切换时,它也很慢。
使用 window.addEventListener('resize', aFunction) 时遇到问题,页面变慢。这些事件每秒生成多次,如果事件处理程序花费太多时间,浏览器将无法重绘页面。
<div class="div1">
<div class="div2"></div>
</div>
.div1 { position: relative; }
.div2 { position: absolute; width: 300px; top: 0; transition: all 0.5s ease; }
@media only screen and (max-width: 1024px) { .div2 { width: 200px; } }
function aFuntion() {
let div1 = document.querySelector('.div1');
let div2 = document.querySelector('.div2');
let diff = div1.clientHeight - div2.clientHeight;
div2.style.top = diff + 'px';
};
// Call the function.
// This worked!
aFuntion();
// Call the function when users resize the window.
// This worked!
window.addEventListener('resize', aFuntion);
// Users click on the Maximize button of the window.
// The function does not work properly!
// Portrait mobile to Landscape mobile.
// The function does not work properly!
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