Using the form.elements Array : Form HTML « Form Control « JavaScript DHTML

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JavaScript DHTML » Form Control » Form HTML 
Using the form.elements Array

<HTML>
<HEAD>
<TITLE>Elements Array</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function verifyIt() {
    var form = document.forms[0]
    for (i = 0; i < form.elements.length; i++) {
        if (form.elements[i].type == "text" && form.elements[i].value == ""){
            alert("Please fill out all fields.")
            form.elements[i].focus()
            break
        }
    }
}
</SCRIPT>
</HEAD>
<BODY>
<FORM>
Enter your first name:<INPUT TYPE="text" NAME="firstName"><P>
Enter your last name:<INPUT TYPE="text" NAME="lastName"><P>
<INPUT TYPE="radio" NAME="gender">Male
<INPUT TYPE="radio" NAME="gender">Female <P>
Enter your address:<INPUT TYPE="text" NAME="address"><P>
Enter your city:<INPUT TYPE="text" NAME="city"><P>
<INPUT TYPE="checkbox" NAME="retired">I am retired
</FORM>
<FORM>
<INPUT TYPE="button" NAME="act" VALUE="Verify" onClick="verifyIt()">
</FORM>
</BODY>
</HTML>

           
       
Related examples in the same category
1. Adjusting a CGI Submission Action
2. Button Objects: Submit, Reset, and Button
3. Checking Elements on a Form
4. Submitting Forms to the Server
5. Variables in Hidden form
6. Creating an Example Form for User Feedback
7. Accessing the Elements of a Form
8. form.reset() and form.submit() Methods
9. The onReset and onSubmit Event Handlers
10.  Passing a Form Object and Form Element to Functions
11.  Last-Minute Checking Before Form Submission
12. A Form for Entering a URL
13. Storing the last value using a Hidden object.
14. Methods and Properties of the Submit Object
15. Methods and Properties of the Reset Object
16. Properties of the Hidden Object
17. Methods and Properties of the Form Object
18. Client-Side JavaScript Objects and HTML Tags That Create Instances of Them
19. Using the document.forms Property
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