今天需要将一个chat整合到客户的网站上去,实现网站的注册用户登录本网站之后点击某个链接能够直接登录到chat上去。我保留了chat原有的登录界面,采用JS技术当页面跳转过来的时候自动填充表单,并自动提交表单,从而实现网站用户无需再次登录即可进入chat。具体代码实现如下
JS代码
<script> //取得cookie值 function getCookie(name){ var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)"); if(arr=document.cookie.match(reg)){ return unescape(arr[2]); }else{ return null; } } //表单自动提交函数 function tijiao(){ function sub(){ var a = document.loginForm.elements; //取得表单下所有元素 a[2].value = getCookie('username'); a[3].value = getCookie('username'); //a[4].value = getCookie('channel'); document.loginForm.submit(); } setTimeout(sub,0);//以毫秒为单位的.1000代表一秒钟.根据你需要修改这个时间. } //点击button提交表单 function clickbutton(obj){ obj.onclick = function(){ obj.submit(); } } </script>
HTML代码
<form id="loginForm" name="loginForm" action="[LOGIN_URL/]" method="post" enctype="application/x-www-form-urlencoded"> <div id="loginFormContainer" style="margin:0px;padding-bottom: 10px;"> <input type="hidden" name="login" id="loginField" value="login"/> <input type="hidden" name="redirect" id="redirectField" value="[REDIRECT_URL/]"/> <div><label for="userNameField">[LANG]userName[/LANG]:</label> <input type="text" name="userName" id="userNameField" maxlength="[USER_NAME_MAX_LENGTH/]"/></div><br /> <div><label for="passwordField">[LANG]password[/LANG]*:</label> <input type="password" name="password" id="passwordField"/><span style="margin-left:4px; color: #339900;">默认是您的用户名</span></div><br /> <div><label for="channelField">[LANG]channel[/LANG]:</label> <select name="channelName" id="channelField">[CHANNEL_OPTIONS/]</select></div><br /> <div><label for="languageSelection">[LANG]language[/LANG]:</label> <select id="languageSelection" name="lang" onchange="ajaxChat.switchLanguage(this.value);">[LANGUAGE_OPTIONS/]</select></div><br /> <!-- <div><input type="submit" name="submit" style="width: 240px;height: 50px;background: url(../chat/img/bglogin2.png);background-repeat: no-repeat;border: 0px;" id="loginButton" value=""/></div> --> <div><button name="subButton" onclick="clickbutton(this);" style="width: 240px;height: 50px;background: url(../chat/img/bglogin2.png);background-repeat: no-repeat;border: 0px;" id="loginButton" value=""></button></div> </div> </form>
PS:
1. 要在body中加入onload="tijiao();"
2. 另外表单的提交按钮(submit)需要隐去,不然会和js的submit()方法冲突,这里采用button提交,避免在自动登录失败时没有提交按钮