JavaScript鼠标触发的相关内容

文章 2023-08-18 来自：开发者社区

【js中鼠标点击、移动和光标移动的事件触发】

事件有三要素：事件源、事件数据、事件处理程序事件冒泡：当元素嵌套的时候，内部元素激发某个事件后，默认情况下外部元素相应的事件也会跟着依次触发可以加return false;是阻止默认操作onclick: 鼠标单击触发ondblclick: 双击触发onmouseover: 鼠标移动上面触发onmouseout: 鼠标离开时触发onmousemove: 鼠标在上面移动时触发onchange: 只要....

问答 2016-06-17 来自：开发者社区

js 优化——当鼠标滚动scrollTop()大于某个值时，显示顶部的固定导航，需要频繁触发js计算，如何优化？

页面打开不滚动时如下：目前我知道的做法仅限于此：$(function() { $(window).scroll(function() { var scrollHeight = $(document).scrollTop(); if (scrollHeight > 60 px) { $('#targetBar').addClass('...

问答 2016-03-18 来自：开发者社区

html5 js拖拽释放鼠标怎么触发事件

左边有个div块命名为A，右面有个div块命名为B.用鼠标拖动A到B中，在释放鼠标的时候在B中打开一个本地的.htm文件。应该怎么写？下面是我写的一部分代码拖动放到此处 js部分 oDiv.ondrop = function(ev){ //释放鼠标的时候触发 this.style.background = 'Tan'; //释放后颜色 //w...

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更新时间 2024-03-21 09:51:49

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