Solved

how to write java script validate function

Posted on 2006-06-21
1
168 Views
Last Modified: 2010-05-18
Hi:

Currently I am working on an customer order form. The email address should be entered when the user submits. So I need add something like "input type=submit value=submit onclick="validate()"  " right? My question is how to write the validate() so that the user won't submit?
0
Comment
Question by:ly_uwo
1 Comment
 
LVL 14

Accepted Solution

by:
boonleng earned 200 total points
ID: 16951896
You need to return true or false in the javascript function.

Example:
<script>
function validate() {
    if (no error) {
        return true;
    } else {
        return false;
    }
}
</script>

<form onsubmit="return validate()">

Note: is best perform validation on onSubmit instead of onclick on the button. This is to cater for user press 'Enter' key.
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
method inner class 6 82
dateFashion java challenge 9 138
AlarmClock Challenge 35 150
login form jsp example 2 24
How do we balance the user experience (UX) with reasonable security measures? It can be done, if you keep these fundamentals in mind.
An article on effective troubleshooting
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question