无法将文本框值从jsp传递到javascript

I have a textbox in one JSP page where the username is entered.Then i have another "Settings" page where there is link for "Change Password" where i have to do the validation username and password(password should not be same as username).But the lightbox for Change password contains only the oldpassword, newpassword and confirmpassword fields..I am wrting a samll function in JS to validate but the value of username is not reached till the js..How to do this??? Please help..

我在一个JSP页面中有一个文本框,其中输入了用户名。然后我有另一个“设置”页面,其中有“更改密码”的链接,我必须在那里进行验证用户名和密码(密码不应与用户名相同) 。但是更改密码的灯箱只包含oldpassword,newpassword和confirmmpassword字段。我在JS中使用了一个samll函数进行验证但直到js才达到username的值。怎么做?请帮忙..

function newcheckUsernamAndPassword(field, rules,i,options){        
> alert("i am  in new method");         var
> newpassword=field.val().toLowerCase();         alert("new pas"
> +newpassword);         var username='<%=Session("username")%>'        
> alert(username); //      var username =
> getValueUsingElementID('username').toLowerCase(); //     
> alert("Username"+username);         if(newpassword==username){        
> return options.allrules.changepassword.alertText;         }       }

code from Change password

更改密码的代码

<input type="password" style="width:150px" id="oldpassword" class=" > textBox validate[required,funcCall[checkOldpassword]" > onfocus="jQuery('#authenticateform').validationEngine('attach',{Overflown:false})"/></td> >         </tr> >         <tr> >             <td class="login"><label class="textLable"><msg:message > code="label.newpassword" /></label><span > class="redStar">*</span>&nbsp;</td> >             <td class="login"><input type="password" > style="width:150px" id="newpassword" name="newpassword" class="textBox > validate[required,maxSize[30],funcCall[checkOldAndNewPassword],funcCall[newcheckUsernamAndPassword],funcCall[validatePasswordCriteria]]" >              > onfocus="jQuery('#authenticateform').validationEngine('attach',{Overflown:false})"/></td> >         </tr>

Myadmin Page for Username

用户名的Myadmin页面

 <tr>   <td class="tblComponent" width="120px" ><label class="tblLabel" for="username"><msg:message code="label.components.userid"/><span class="redStar">*</span></label></td>   <td class="borderR tblComponent" width="120px" colspan="3"><input id="username" name="username" type="text" value="" onfocus="jQuery('#adduserform').validationEngine('attach',{Overflown:false})"/></td>    </tr>

Please help

2 个解决方案

#1

According to your question. you can pass a textfield value to javascript by calling a javascript method function. Create a function and call it somewhat like on button. for e.g

根据你的问题。您可以通过调用javascript方法函数将文本字段值传递给javascript。创建一个函数,并在按钮上调用它。例如

<input type="button" onclick='abc();' value="Click"/>

now set an id on textfield. and call in javascript function somewhat like.

现在在textfield上设置id。并调用javascript函数有点像。

function abc(){
   var a = document.getElementById('textfieldID').val;
}

Sorry but your code is so messed up that i will look it again. but i think if you question is linked up to this(passing textfield from jsp to javascript) then try this.

对不起,但你的代码太乱了,我会再看一遍。但我想如果你的问题与此相关联(将文本字段从jsp传递到javascript),那么试试这个。

#2

The best method to pass value of a text field to JavaScript is:

将文本字段的值传递给JavaScript的最佳方法是:

HTML:

<input type="button" onclick='passValue(this);' value="Pass Value"/>

JavaScript:

function passValue(object){
   var value = object.value;
}

#1