先給大家展示下：
廢話不多說了，直接給大家貼代碼了，具體代碼如下所示：
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> </head> <script src="js/jquery-1.8.0.min.js"></script> <script> $(function() { $("input[name='uname']").blur(function() { //失去焦點 var namestr = $(this).val(); var regstr = /^[\u4e00-\u9fa5]{2,4}$/; if(!regstr.test(namestr)) { $(this).parent().next().html("使用者名稱必須是2-4個漢字").css("color", "red"); return false; } return true; }); $("input[name = 'uname']").focus(function() { //擷取焦點 $(this).val(""); $(this).parent().next().html(""); }); $("input[name='pwd']").blur(function() { var pwdstr = $(this).val(); var regstr = /^\w{6}$/; if(!regstr.test(pwdstr)) { $(this).parent().next().html("密碼必須是6位元字字母底線").css("color", "red"); return false; } return true; }); $("input[name='pwd']").focus(function() { $(this).parent().next().html(""); }); $("input[name='birthday']").blur(function() { var birthdaystr = $(this).val(); var regstr = /^(19|20)\d{2}-(1[0-2]|0?[1-9])-(3[0-1]|2[0-9]|0?[1-9])$/; if(!regstr.test(birthdaystr)) { $(this).parent().next().html("日期格式不正確").css("color", "red"); return false; } return true; }); $("input[name='birthday']").focus(function() { $(this).parent().next().html(""); }); $("input[name='email']").blur(function(){ var emailstr = $(this).val(); var regstr = /^[\w\-]+@[a-z0-9A-Z]+(\.[a-zA-Z]{2,3}){1,2}$/; if(!regstr.test(emailstr)){ $(this).parent().next().html("郵箱格式不正確").css("color","red"); return false; } return true; }); $("input[name='email']").focus(function(){ $(this).parent().next().html(""); }); }); </script> <style> body { font-size: 12px; } #home { background-color: beige; border: solid 1px black; width: 550px; height: 185px; margin: auto; margin-top: 20px; } #head { height: 135px; } #foot { text-align: center; } .dl1 { clear: both; padding-left: 10px; } .dl1 dt { float: left; height: 30px; width: 80px; line-height: 30px; } .dl1 dd { float: left; height: 30px; line-height: 30px; /*width: 250px;*/ } #btn_res { background-image: url(img/reset.gif); width: 80px; height: 34px; } #btn_sub { background-image: url(img/submit.gif); width: 80px; height: 34px; } </style> <body> <p id="home"> <p id="head"> <form action="" method="post"> <dl class="dl1"> <dt>使用者名稱 : </dt> <dd class="dd1"><input type="text" value="輸入使用者名稱" name="uname" /></dd> <dd></dd> </dl> <dl class="dl1"> <dt>使用者密碼 : </dt> <dd class="dd1"><input type="password" name="pwd" /></dd> <dd></dd> </dl> <dl class="dl1"> <dt>出生日期 : </dt> <dd class="dd1"><input type="text" name="birthday" /></dd> <dd>yyyy-mm-dd</dd> </dl> <dl class="dl1"> <dt>使用者郵箱 : </dt> <dd><input type="text" name="email"/></dd> <dd></dd> </dl> </form> </p> <p id="foot"> <input type="submit" value="" id="btn_sub" /> <input type="reset" value="" id="btn_res" /> </p> </p> </body></html>Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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