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
20.Use hidden field to store data
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