使用 <em> js </em> 如果改变一篇文章字体的大小</title> </head> <style type="text/ <em> css </em> "> a{ text-decoration:none; color:#0C3} a:hover{ c <div class="desc ellipsis-online ellipsis-online-1"> 在页面上添加一些可以调整字号的按钮。这里采取的方法是: 以像素为单位指定body元素的font-size,然后通过相对的em单位 <em> 设置 </em> 页面中其它元素(例如p)的字号。 <!DOCTYPE html> <html lang="en"> <meta charset="UTF-8"> <title>这是一个 <em> 设置 </em> <em> 字体大小 </em> 的页面</title> </head> <script </div> <div class="desc ellipsis-online ellipsis-online-1"> 现在需要将蓝色字体中的 <em> 字体大小 </em> 进行放大或缩小的功能,其实只需要将字体包裹在一个div中,并且 <em> 设置 </em> id 和 默认样式style=”font-size: 17px;”,<div id="the_content" class="article-content" style="font-size: 17px;"> <p>如今,一个员工平均每天“发送+ </div> // el - 要 <em> 设置 </em> 字体的最外层元素,size - <em> 字体大小 </em> ,单位px function setFontSize (el, size) { // 获取元素el下的所有元素nodes const nodesObj = el.getElementsByTagName("*") const nodes = Object.values(nodesObj) nodes.forEach(node => { node.style.fontSize = size + "p 2、下面是 <em> js </em> 部分的代码,var sise = 15是声明字体初始大小为15px,这里我 <em> 设置 </em> 鼠标点击一下字体放大或缩小1px,sise++。如果想要改变变化的像素可以这样写 sise = sise + 具体数字;另外,font-sise要改为fo... <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>r. <a class="user-name" href="https://blog.csdn.net/community_717" target="_blank"> CSDN-Ada助手: </a> <span class="code-comments"> 非常感谢您分享这篇关于表单输入框不能为空的博客,这是一个非常实用的技术点。我认为,您可以考虑在下一篇博客中深入探讨表单验证的相关技术,比如利用JavaScript实现表单验证、使用HTML5中新增的表单验证属性等等。这样的技术文章对其他用户也将非常有帮助,特别是那些正在学习Web开发的初学者。下一篇您可以继续就表单验证这个话题继续写,相信会有更多读者受益。 为了方便博主创作,提高生产力,CSDN上线了AI写作助手功能,就在创作编辑器右侧哦~(https://mp.csdn.net/edit?utm_source=blog_comment_recall )诚邀您来加入测评,到此(https://activity.csdn.net/creatActivity?id=10450&utm_source=blog_comment_recall)发布测评文章即可获得「话题勋章」,同时还有机会拿定制奖牌。 </span> <div class="sep10"></div> </div> </div> </div> <div class="topic_buttons"> <div class="fr gray f11" style="line-height: 12px; 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