CSS学习笔记:overflow-wrap(word-wrap)

本文介绍了CSS中的overflow-wrap属性,解释了它如何处理过长的单词以避免内容溢出,包括normal和break-word两个关键字值的区别,并给出了具体的样式示例。

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概念

CSS 属性 overflow-wrap 是用来说明当一个不能被分开的字符串太长时,为防止其溢出,浏览器是否允许这样的单词中断换行。

注:word-wrap 属性原本属于微软的一个私有属性,在 CSS3 现在的文本规范草案中已经被重名为 overflow-wrap 。 word-wrap 现在被当作 overflow-wrap 的 “别名”。 稳定的谷歌 Chrome 和 Opera 浏览器版本支持这种新语法。

/* Keyword values */
overflow-wrap: normal;
overflow-wrap: break-word;
  • normal
    表示在正常的单词结束处换行。
  • break-word
    表示如果行内没有多余的地方容纳该单词到结尾,则会被强制分割换行。

示例

p { width: 13em; background: gold; }

这里写图片描述

p { width: 13em; background: gold; overflow-wrap: break-word; }

这里写图片描述

<script setup> import { onBeforeUnmount, ref, shallowRef } from 'vue' import { Editor, Toolbar } from '@wangeditor/editor-for-vue' import '@wangeditor/editor/dist/css/style.css' import router from "@/router/index.js"; // 编辑器实例 const editorRef = shallowRef() // 内容 HTML const valueHtml = ref('') // 编辑器配置 const editorConfig = { placeholder: '请输入内容...', MENU_CONF: { insertImage: { checkImage(src) { if (src.indexOf("http") !== 0) { return "图片网址必须以 http/https 开头"; } return true; }, }, } } // 工具栏配置 const toolbarConfig = { toolbarKeys: [ 'headerSelect', 'bold', 'italic', 'underline', 'through', 'color', 'bgColor', 'fontSize', 'fontFamily', 'lineHeight', 'bulletedList', 'numberedList', 'todo', 'justifyLeft', 'justifyRight', 'justifyCenter', 'insertLink', 'insertImage', 'insertTable', 'codeBlock', 'blockquote', 'divider', 'emotion', 'undo', 'redo' ] } // 历史记录相关状态 const showHistory = ref(false) const historyItems = ref([ { title: 'AI生成的学习笔记', date: '2023-10-15 14:30' }, { title: '项目会议记录', date: '2023-10-14 09:45' }, { title: '技术方案设计', date: '2023-10-12 16:20' }, { title: '读书笔记 - 人工智能导论', date: '2023-10-10 11:15' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' }, { title: '周计划安排', date: '2023-10-08 08:30' } ]) // 编辑器回调函数 const handleCreated = (editor) => { editorRef.value = editor console.log("编辑器已创建", editor) } const handleChange = (editor) => { console.log("内容变化:", editor.children) } const handleDestroyed = (editor) => { console.log('编辑器已销毁', editor) } const handleFocus = (editor) => { console.log('编辑器获得焦点', editor) } const handleBlur = (editor) => { console.log('编辑器失去焦点', editor) } const customAlert = (info, type) => { alert(`【系统提示】${type} - ${info}`) } const customPaste = (editor, event, callback) => { console.log('粘贴事件', event) callback(true) // 继续默认的粘贴行为 } // 及时销毁编辑器 onBeforeUnmount(() => { const editor = editorRef.value if (editor == null) return editor.destroy() }) // 头部按钮功能 const handleBack = () => { router.back() // 返回上一页 } const toggleHistory = () => { showHistory.value = !showHistory.value } const goToProfile = () => { alert('跳转到个人用户管理界面') } </script> <template> <div class="editor-layout"> <!-- 固定头部 --> <header class="app-header"> <button class="back-btn" @click="handleBack"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <path d="M19 12H5M12 19l-7-7 7-7"/> </svg> </button> <h1 class="app-title">Edulens AI_<span class="gradient-text">AI笔记</span></h1> <div class="header-right"> <button class="history-btn" @click="toggleHistory"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <circle cx="12" cy="12" r="10"></circle> <polyline points="12 6 12 12 16 14"></polyline> </svg> <span>历史记录</span> </button> <div class="user-avatar" @click="goToProfile"> <div class="avatar-placeholder"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"></path> <circle cx="12" cy="7" r="4"></circle> </svg> </div> </div> </div> </header> <!-- 固定工具栏 --> <div class="fixed-toolbar"> <Toolbar :editor="editorRef" :defaultConfig="toolbarConfig" /> </div> <!-- 编辑器区域 --> <!-- <div class="page-container">--> <div class="editor-container" > <Editor v-model="valueHtml" :defaultConfig="editorConfig" @onChange="handleChange" @onCreated="handleCreated" @onDestroyed="handleDestroyed" @onFocus="handleFocus" @onBlur="handleBlur" @customAlert="customAlert" @customPaste="customPaste" /> </div> <!-- </div>--> <!-- 历史记录侧边栏 --> <div class="history-sidebar" :class="{ active: showHistory }"> <div class="sidebar-header"> <h2>历史记录</h2> <button class="close-btn" @click="toggleHistory"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <line x1="18" y1="6" x2="6" y2="18"></line> <line x1="6" y1="6" x2="18" y2="18"></line> </svg> </button> </div> <div class="history-list"> <div v-for="(item, index) in historyItems" :key="index" class="history-item"> <div class="history-title">{{ item.title }}</div> <div class="history-date">{{ item.date }}</div> </div> </div> </div> <!-- 历史记录遮罩 --> <div v-if="showHistory" class="sidebar-mask" @click="toggleHistory"></div> </div> </template> <style> /* 基础样式重置 */ * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; } .editor-layout { position: relative; height: 100vh; overflow: hidden; background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%); } /* 固定头部样式 */ .app-header { position: fixed; top: 0; left: 0; right: 0; height: 60px; display: flex; align-items: center; padding: 0 20px; background: #ffffff; box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1); z-index: 1000; transition: all 0.3s ease; } .back-btn { width: 40px; height: 40px; border: none; background: none; cursor: pointer; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.2s ease; } .back-btn:hover { background: #f0f5ff; transform: translateX(-2px); } .back-btn svg { width: 20px; height: 20px; color: #4a6cf7; } .app-title { flex: 1; text-align: left; font-size: 1.4rem; font-weight: 600; color: #1a1a1a; letter-spacing: 0.5px; } .header-right { display: flex; align-items: center; gap: 15px; } .history-btn { display: flex; align-items: center; gap: 6px; padding: 8px 15px; background: #f0f5ff; border: none; border-radius: 20px; color: #4a6cf7; font-weight: 500; font-size: 0.9rem; cursor: pointer; transition: all 0.2s ease; } .history-btn:hover { background: #e1e9ff; transform: translateY(-1px); box-shadow: 0 2px 8px rgba(74, 108, 247, 0.2); } .history-btn svg { width: 18px; height: 18px; } .user-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s ease; box-shadow: 0 4px 10px rgba(118, 75, 162, 0.3); } .user-avatar:hover { transform: scale(1.05); box-shadow: 0 6px 15px rgba(118, 75, 162, 0.4); } .avatar-placeholder { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: rgba(255, 255, 255, 0.2); } .avatar-placeholder svg { width: 18px; height: 18px; color: white; } /* 固定工具栏样式 */ .fixed-toolbar { position: fixed; top: 60px; /* 在头部下方 */ left: 0; right: 0; z-index: 999; background: white; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); border-bottom: 1px solid #eaeef5; padding: 0 10px; } /* 编辑器容器样式 */ .editor-container { margin-top: 110px; /* 头部高度 + 工具栏高度 */ height: calc(100vh - 150px); /*overflow-y: auto;*/ padding: 20px; background: white; border-radius: 12px; /*margin-left: 20px; margin-right: 20px;*/ margin-left: auto; margin-right: auto; box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05); width: 1000px; /* 固定宽度 */ } /* 历史记录侧边栏 */ .history-sidebar { position: fixed; top: 0; right: -400px; width: 380px; height: 100vh; background: white; z-index: 2000; box-shadow: -5px 0 25px rgba(0, 0, 0, 0.1); transition: right 0.4s cubic-bezier(0.23, 1, 0.32, 1); display: flex; flex-direction: column; } .history-sidebar.active { right: 0; } .sidebar-header { display: flex; justify-content: space-between; align-items: center; padding: 20px; border-bottom: 1px solid #eee; } .sidebar-header h2 { color: #333; font-weight: 600; }编辑器里粘贴整段代码会放入代码块中,但不会自动换行 .close-btn { background: none; border: none; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s ease; } .close-btn:hover { background: #f5f7fa; } .close-btn svg { width: 20px; height: 20px; color: #666; } .history-list { flex: 1; overflow-y: auto; padding: 15px; } .history-item { padding: 15px; border-radius: 8px; margin-bottom: 10px; background: #f9fbfd; transition: all 0.2s ease; cursor: pointer; border-left: 3px solid #4a6cf7; } .history-item:hover { background: #edf3ff; transform: translateX(5px); } .history-title { font-weight: 500; color: #1a1a1a; margin-bottom: 5px; } .history-date { font-size: 0.85rem; color: #666; } /* 历史记录遮罩 */ .sidebar-mask { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.4); z-index: 1500; backdrop-filter: blur(2px); } /* 响应式设计 */ @media (max-width: 768px) { .app-header { padding: 0 10px; } .app-title { font-size: 1.1rem; } .history-btn span { display: none; } .editor-container { margin-left: 10px; margin-right: 10px; padding: 15px; } .history-sidebar { width: 85%; } } /* 滚动条美化 */ ::-webkit-scrollbar { width: 8px; } ::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 4px; } ::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; } ::-webkit-scrollbar-thumb:hover { background: #a8a8a8; } .page-container { overflow-y: auto; /* 启用页面级滚动 */ } .gradient-text { /* 渐变背景(与头像的渐变颜色保持一致) */ background: linear-gradient(135deg, #00ffe9 0%, #e70fff 100%); /* 将背景裁剪为文字形状(兼容 Safari/Chrome) */ -webkit-background-clip: text; background-clip: text; /* 文字透明,显示背景渐变 */ color: transparent; /* 可选:增强文字重量,让渐变更明显 */ font-weight: 700; } </style>
最新发布
07-28
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