JavaScript Coder


JavaScript Form Validation : quick and easy!

Using client side JavaScript is an efficient way to validate the user input in web forms. When there are many fields in the form, the JavaScript validation becomes too complex. The JavaScript class presented here makes the form validations many times easier. Contents Download the JavaScript form validation script Using the form validation script Adding a custom validation Table of Validation Descriptors Showing the form validation errors next to the element

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JavaScript Form Validation Script: More features

This is in continuation of the JavaScript Form Validation script in this page. In this page, we will see some of the advanced features of the script. Showing all the form validation errors together in a message box If you want to show all the error messages together, then just call the EnableMsgsTogether() function as shown below. frmvalidator.EnableMsgsTogether(); See the form validation demo Showing the form validation errors on the page itself You can display the validation errors on the page itself.

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Simfatic Forms Validation: save your time coding

This is in continuation of the JavaScript form validation script explained here. Simfatic Forms is a complete web form development software. You can create forms add form validations, select your options for server side processing, generate the script and install the form on the web server. No coding required. This page takes you through some of the form validation features of Simfatic Forms. Add validations to your existing forms You can choose to create a new fresh form or read the form from an existing web page.

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Javascript validation simple example code

Here is a simple form validation code that validates a simple form No additional library is used. It is pure Javascript First step - add an event listner for form submit event Here is the code that does that step: document.getElementById('myform').addEventListener('submit', validateForm); function validateForm() { } First, we get the form DOM object using the ID attribute of the form. Then we listen to the form submit event. Next, we have to validate each of the fields in the form.

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