jQuery实现输入框的放大和缩小功能示例

2019-11-19 13:26:20

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来源：转载

供稿：网友

本文实例讲述了jQuery实现输入框的放大和缩小功能。分享给大家供大家参考，具体如下：

<%@ page language="java" import="java.util.*"pageEncoding="UTF-8"%><%Stringpath = request.getContextPath();StringbasePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTDHTML 4.01 Transitional//EN"><html> <head>  <base href="<%=basePath%>" rel="external nofollow" >  <title>My JSP 'index4.jsp' startingpage</title>  <meta http-equiv="pragma"content="no-cache">  <meta http-equiv="cache-control"content="no-cache">  <meta http-equiv="expires"content="0">  <meta http-equiv="keywords"content="keyword1,keyword2,keyword3">  <meta http-equiv="description"content="This is my page">  <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>  </head>  <body>  <input type="text"id="content">  <label><input type="button"name="Submit" value="放大" id="bigger"/></label> <label><input type="button"name="Submit2" value="缩小" id="small"/></label>  <script type="text/javascript">$(function(){var content=$("#content");$("#bigger").click(function(){if(content.height()<500){content.height(content.height()+50);}else{alert("已经够高了");}});$("#small").click(function(){if(content.height()>50){content.height(content.height()-50);}else{alert("无法在缩小了");}});});</script></body></html>

运行效果如下：