ServiceNow Telugu Series-Episode 28 | Client Script & OnLoad Client Script | ServiceNow Telugu Video
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In ServiceNow, a client script is a script that runs on the browser (client) side to perform operations such as form field validation, dynamic UI changes, or triggering other client-side actions. Here's a basic example of a client script in ServiceNow:
// Client Script Example
// This script runs on the Incident form
// It sets the priority field based on the urgency field
(function () {
// Get the current form
var currentForm = g_form.getFormElement();
// Attach an onChange event to the urgency field
g_form.addOnChange('urgency', function () {
// Get the value of the urgency field
var urgency = g_form.getValue('urgency');
// Set the priority based on the urgency
if (urgency === '1') {
g_form.setValue('priority', '1');
} else if (urgency === '2') {
g_form.setValue('priority', '2');
} else {
g_form.setValue('priority', '3');
}
});
})();
In this example:
The script is wrapped in an immediately invoked function expression (IIFE) to avoid polluting the global namespace.
It uses g_form to interact with the current form.
An onChange event is attached to the 'urgency' field, so the script runs when the urgency field changes.
Depending on the urgency value, the script sets the 'priority' field accordingly.
This is a simple illustration, and client scripts in ServiceNow can be much more complex depending on the specific requirements of your application. Always consider best practices and the ServiceNow documentation for more advanced scripting.
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