hover | 易学教程

Simulate hover using JavaScript events

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问题 Is it possible to simulate hover using JavaScript Events? I tried injecting mouseover event on the target element but no luck. For example, if there is a link that has a hover selector, is it possible to "hover" over it using JavaScript Events? Basically, I want to trigger CSS hover. You can assume I can't use jQuery. 回答1: The jQuery hover event is just using mouseenter and mouseleave events. Here is the source of jQuery's hover: function (fnOver, fnOut) { return this.mouseenter(fnOver)

used on a smartphone, shiny interactive plot doesn't understand finger movements

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问题 I have a R-Shiny application with a plot that implements interactive actions: click, hovering (hovering is passing the mouse over the plot, which can be detected by shiny). To give an idea, I post below a simplified shinyapp with the functionnality that is problematic to me, the interactive drawing plot. (it's taken from an old answer of mine here) It's actually working fine, however I need people to use it from their smartphones . The problem: the finger movements we do in the smartphone are

HTML的select控件美化

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HTML的select控件美化 CSS： .div-select { border: solid 1px #999; height: 40px; line-height: 40px; cursor: default; } .div-select-text { float: left; background-color: #fff; height: 100%; word-break: keep-all; overflow: hidden; cursor: default; } .div-select-text > div { padding: 3px; line-height: 34px; } .div-select-arrow { background-color: #fff; float: right; width: 40px; height: 100%; color: #999; cursor: default; } .div-select-arrow > div { border: solid 1px #999; margin: 2px; height: 34px; background-color: #f2f2f2; text-align: center; line-height: 34px; font-size: 22px; } .div-select-list {

css鼠标移入底部边框展开效果

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经常看到这种效果，就研究了下。 <a href='' class='tag'>测试一下吧</a> .tag { text-decoration:none; position:relative; padding:10px } .tag:after{ content:''; position:absolute } .tag:after { border-bottom:2px solid #333; left:51%; right:51%; bottom:0px; transition: all .2s; } .tag:hover:after { left:0%; right:0% } 来源： CSDN 作者：陈星波链接： https://blog.csdn.net/c2635222586/article/details/87025765

利用html,css,js制作分割页面

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利用html,css,js制作分割页面 html代码: <!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>分割界面</title> <link rel="stylesheet" href="./分割界面.css" /> </head> <body> <div class="container"> <div class="split left">  <h1>秋天</h1> <a href="#" class="button">秋天</a> </div> <div class="split right">  <h1>夏天</h1> <a href

小程序学习

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转自 https://www.cnblogs.com/dotnetcrazy/p/10597311.html#top 文章汇总： https://www.cnblogs.com/dotnetcrazy/p/9160514.html 目录：一文摸摸小程序的底¶ 1.屁话一箩筐¶ 2.记录点小程序功能点¶ 2.1.前言¶ 2.2.页面初始数据的使用¶ 2.2.1.获取¶ 2.2.2.设置¶ 3.弹框提醒¶ 4.页面自定义属性值¶ 4.1.H5的自定义属性值¶ 4.2.小程序版¶ 5.小程序标题¶ 6.拨打电话¶ 7.图片背景¶ 7.1.背景图片¶ 7.2.页面填充¶ 7.3.新思路¶ 8.页面跳转¶ 9.地图相关¶ 9.1.简单案例¶ 9.2.Map组件¶ 1.简单案例扩展¶ 2.Map组件案例¶ 补充说明¶ 1.关于调试¶ 2.关于开发者设置¶ 3.关于网络资源的说明¶ 4.发布和预览¶ 一文摸摸小程序的底写在前面的话：算不了入门教程，只能算这几晚的摸索教程，下次会出一篇一文入门小程序本文示例源码： https://github.com/lotapp/BaseCode/tree/master/javascript/5.wechat/base 1.屁话一箩筐有些同志留言说我消失了，文章更新频率比以前慢多了？我这边先统一回复一下：最近这几个月利用空闲时间把三国读完了（咳

Multiple effects on single DIV element hover

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问题 I am trying to get multiple effects on a single image hover to allow the best outcome with the least code possible. Note: I do not want jquery at all! CSS only (even 3). So I have an image which will change on hover and at the same time cause a Div below the said image to change the background image as well (which is actually text, I just couldn't find a way to change the text so I tried the image) and with it all having the hover image on the IMG tag to have a link to the place I want. So

Multiple effects on single DIV element hover

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jQuery $.hover used for submenus causing “bouncing”

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问题 I'm having some trouble with the jQuery hover method. Here's the relevant JavaScript code: $("#navigation > li > ul").hide(); $("#navigation > li").hover( function() { $(this).children("ul").slideDown(125); }, function() { $(this).children("ul").slideUp(125); } ); Here's the corresponding HTML: <ul id="navigation"> <li><a href="#">Top Level Item #1</a></li> <li> <a href="#">Top Level Item #2</a> <ul> <li><a href="#">Sub-Menu Item #2-1</a></li> <li><a href="#">Sub-Menu Item #2-2</a></li> <li>

CSS - Custom cursor that changes depending on hovered element flickers when moving left to right but not right to left

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问题 I am trying to create a custom cursor that changes when hovering over a <div> , but there is a flicker when moving left to right across it, but not when moving right to left. Why this is happening and what I can do to fix it? document.addEventListener('mousemove', (ev) => cursorMove(ev)); function cursorMove(ev) { let circle = document.getElementById('circle'); let posY = ev.clientY; let posX = ev.clientX; circle.style.top = posY + 'px'; circle.style.left = posX + 'px'; } body { margin: 0;