Create your first JavaScript Web Resource

Post Date: February 23, 2017

Microsoft Dynamics Consultant


The fastest and probably the easiest way to add custom code to Dynamics CRM is through JavaScript and Web Resources. In this article, I’ll show you how to create a JavaScript web resource to extract the text value out of the Account Name and display the name in the Description field with a Hello, as a prefix.

Hello Syed Hussain

Some items covered in this tutorial:

  1. Create a Solution
  2. Create a JavaScript Web Resource
  3. Add the JavaScript Web Resource to the Account Form
  4. Add the JavaScript Function to the Account Name, onChange Event


Understanding how to use JavaScript in Dynamics CRM is the first step to creating complex business logic that Business Rules or Processes cannot solve.

1. Create a new Dynamics CRM solution

Start by creating a new Solution. We’ll use the CRM solution to host our JavaScript File.

2. Create a new Web Resource

Create a new CRM Web Resource. Click the icon labeled ‘Web Resources‘.

3. Create a new JScript File

Copy the details below as you see it.

You’ll notice that once you have entered the Web Resource details, you will not be able to save this Web Resource. This is because JScript resources need to have either an attached JScript file, or you can use the Text Editor to paste some saved JScript code. For this simple tutorial, we’ll go with pasting the code into the Text Editor.

Click the Text Editor button to open up the text area. Then copy and paste the code into the text area using the snippet below.

4. Add JavaScript snippet

Copy and paste the JavaScript snippet below into the text area.

You should end up with the following:

5. Publish all changes

Save all the changes and hit the Publish All Customizations button.

6. The Account Form

We’ll now make changes to the Account form.

This is the current Account Form. As mentioned before, what we want to do here is output the text “Hello Account Name”, where Account Name will be the Account Name you have entered.

7. Edit the Account Form

Place the Account Form into Edit mode.

8. Add the Web Resource to the Account Form

It’s time to add that JavaScript Web Resource to the Account form.

Double-click on the ‘Form Properties‘ icon in the header.

9. Edit Form Properties

The Form Properties has several tabs. The Tab that we’re interested in is Events.

There are two sections in the Events tab, Form Libraries and Event Handlers. You’ll notice that the Form Libraries section already has a library attached – this is the Activity Feeds script. We’ll add our script to the Form Libraries section.

Click Add under Form Libraries.

10. Add your library to the Form Libraries section

Search for the library record named ‘new_account_form_library.js‘. Once you’ve found the library, click the Add button. This will add your script to the form.


You should end up with something that looks like this:

Click OK. The window should now close. Save any other changes and close all Windows.

11. Hook the script to the Account Name

Now that we’ve added the script to the Account form, we need to trigger the change when the Account name changes. For this, we need to “hook” the script to the Account Name field.

The behaviour we’re after is – When the Account name changes, we want our script to trigger causing the description field to be updated.

12. Add the script to the Account Name field

Double-click on the field name, this will open the ‘Field Properties’ dialog box. Click on the Events tab, you’ll notice that your script, new_account_form_library.js is available and ready to use.

13. Associate your function to the on change event

Click on the Add icon, this will load up a new window.

From the Library pick-list, select your JavaScript library file; new_account_form_library.js.


In the Function field, add the name of the function – HelloAccountName

Click OK. Close any other Windows and save changes.

14. Save and Publish the changes

Save and Publish the changes

15. The Result

The final result should mean that, when you enter a name: ‘Syed Hussain‘ in the Account Name field, the name is extracted and displayed in the Description field as ‘Hello Syed Hussain‘.

There are 2 Comments

  1. Posted by victor onyebuchi Reply

    Hi Syed,
    I am new to web resources, as i use plugins for all extensions, but i have a question. Going from the implementation above, I was wondering why you created a new solution, you clearly did not use it ????

    • Posted by Syed Hussain Reply

      Hi, I like creating solutions whenever I work on something in D365. The benefits are that I can version control the components through the solution by downloading this automatically everytime I want to update components in my solution. D365 does not have a good version control system, but this is easy to achieve using GIT and solutions unpacked. Finally, there is never any hard creating solutions as long as you are able to manage them.

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