How to Restrict Field Length in NetSuite SuiteScript.

Description: In NetSuite SuiteScript, custom forms are a powerful tool for designing tailored interfaces to meet specific business needs. However, it is essential to control the data entered into these forms to maintain data integrity and ensure optimal system performance. One common requirement is to restrict the length of text fields to a specific maximum character count. In this article, we will explore how to achieve this using SuiteScript 2.0.

NetSuite provides a robust SuiteScript API that enables developers to customize forms and fields as per their requirements. For this demonstration, we’ll use a simple script to create a custom form with a text field and restrict its length to 64 characters.

// Step 1: Create a custom form
var form = serverWidget.createForm({
    title: 'Simple Form'
});

// Step 2: Add a text field to the form
var field = form.addField({
    id: 'custpage_textfield',
    type: serverWidget.FieldType.TEXT,
    label: 'Text'
});

// Step 3: Set the maximum length for the text field
field.maxLength = 64;

This similar method can used for the user event before load with help of serverWidget module.