TextArea onmouseup action event : Text TextField « Form « JavaScript Tutorial

<script type="text/javascript" language="javascript">
<!-- //
function CheckStatus(){
    if (document.MyForm.MyTextField.value==""){
        alert("First please enter your name");
    } else{

// -->
<form name="MyForm" action="http://www.java2s.com/" method="Post" onsubmit="DisplayValue()">
 <td><input type="text" name="MyTextField" onblur="ChangeStatus()"/></td>
 <td>Enter your name</td>
 <td><textarea name="Comments" rows="6" cols="40" onmouseup="CheckStatus()" >Please enter your name first</textarea></td>
 <td>Enter your comments.</td>
 <td><input type="submit" value="Click to Submit"/></td>

10.15.Text TextField
10.15.1.Retrieving Text in form button action
10.15.2.Displaying the value entered in a text field
10.15.3.TextField requests focus
10.15.4.onFocus event handler
10.15.5.Capture key event in a textfield
10.15.6.TextField onblur action event
10.15.7.TextArea onmouseup action event
10.15.8.Refresh the TextField box automatically
10.15.9.Compare the value in text field
10.15.10.Select all text in a TextBox
10.15.11.Text Input Events
10.15.12.Compare the value in TextField
10.15.13.Getting and Setting a Text Object's value Property
10.15.14.Resetting a Text Object to Default Value