本文執行個體講述了js表單登陸驗證的方法。分享給大家供大家參考，具體如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>項目後台管理系統</title><link rel="stylesheet" href="__PUBLIC__/css/login.css" /><script type="text/javascript" src="__PUBLIC__/js/jquery.min.js"></script><script type="text/javascript">function $(id){ return document.getElementById(id);}//驗證姓名function checkname(){ var name=$("admin_name").value; if(name=='') { $('s1').innerHTML='姓名不可為空'; $('s1').style.color='red'; return false; } else { $('s1').innerText='ok'; $('s1').style.color='green'; return true; }}//驗證密碼function checkpwd(){ var password=$("password").value; if(password=='') { $('s2').innerHTML='密碼不可為空'; $('s2').style.color='red'; return false; } else { $('s2').innerHTML='ok'; $('s2').style.color='green'; return true; }}//驗證所有表單提交function checkall(){ if(checkname()&&checkpwd()) { return true; } else { return false; }}</script></head><body class="b"><div class="lg"><form action="__URL__/dologin" method="POST" onsubmit="return checkall();"> <div class="lg_top"></div> <div class="lg_main"> <div class="lg_m_1"> <input name="admin_name" value="" class="ur" id="admin_name" onblur="checkname();"/><span id='s1'></span> <input name="password" type="password" value="" class="pw" id="password" onblur="checkpwd();"/><span id='s2'></span> </div> </div> <div class="lg_foot"> <input type="submit" value="Login In" class="bn" /></div></form></div></body></html>
更多關於JavaScript相關內容感興趣的讀者可查看本站專題：《JavaScript尋找演算法技巧總結》、《JavaScript資料結構與演算法技巧總結》、《JavaScript遍曆演算法與技巧總結》、《JavaScript中json操作技巧總結》、《JavaScript切換特效與技巧總結》、《JavaScript動畫特效與技巧匯總》、《JavaScript錯誤與調試技巧總結》及《JavaScript數學運算用法總結》
希望本文所述對大家JavaScript程式設計有所協助。
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