[JavaScript知识库]前端小项目10 # Hidden Search Widget 隐藏搜索小部件

知识点

• CSS 取消input输入框聚焦时的边框（border&outline）
• CSS input输入框 placehoder的样式修改
• CSS选择器优先级
• 原生JS操作DOM常用方法
• 原生JS操作class属性
• CSS 过渡transition

介绍

点击搜索框内最右侧🔍图标，搜索框逐渐宽度缩小直至只剩下搜索图标，再次点击图标，搜索框恢复原样。

代码

HTML:

 <div>
     <input id="search-input" type="text" placeholder="Search...">
     <span id="search" class="fa fa-search"></span>
 </div>

CSS:

 body{
     display: flex;
     justify-content: space-evenly;
     align-items: center;
     height: 100vh;
     background-color: mediumpurple;
 }
 #search-input{
     width: 150px;
     height: 36px;
     padding: 0px 40px 0px 8px;
     margin: 0;
     border: 0px;
     outline: none;
     font-size: 18px;
     background-color: #fff;
     transition: .5s;
 }
 .close-input{
     width: 0px!important;
     padding-right: 28px!important;
 }
 #search-input::placeholder{
     font-weight: 100;
 }
 #search{
     position: relative;
     left:-40px;
     padding: 10px;
     cursor: pointer;
 }

JavaScript:

 const search = document.getElementById("search")
 const input = document.getElementById("search-input")

 search.addEventListener("click",()=>{
     input.classList.toggle("close-input")
 })