How to create and use the Web Resources in Microsoft Dynamics 365 CE/CRM.

• First go the CRM -> Settings
• Select the Advanced Settings option ,

• Click in front of Settings and append it.

• Go to Customization Section ,
• click on Solutions option .

• Select the particular Solution in which you want to create the web resource.
• Or you can create your new solution.

• On  Solution that we have selected under Component
• Click on the Web Resource .

• Click on New to create a Web Resource.
• Give appropriate Name to your Web Resource and
• Copy the same name to Display Name.

• On Content select Type of language on which you want to work on,
• We select Script(JScript).
• Select Language

• Click on Text Editor to open it.

In this scenario We have a requirement from a Customer to get the GUID and logical name of a record  of the entity(table) while updating the record .

var recordId = formContext.data.entity.getId();

var entityName = formContext.data.entity.getEntityName();

function (executionContext) {
        var formContext = executionContext.getFormContext();
        var recordId = formContext.data.entity.getId();
        var entityName = formContext.data.entity.getEntityName();
        alert(`Record GUID: ${recordId} and Entity Name: ${entityName}`);
    }

• Copy the above code .
• Paste your Code in Text Editor.
• And click on ok.

• After adding your code in Text Editor click on Save.

• Click on Publish to publish your Web Resource .
• As your customizations start publishing it will take few minutes to publish it.

• Select the particular Entity on which you want to add your Web Resource .
• Expand it and click on Forms
• Then again click on main form of your selected Entity.

• Open the form by Double click on main form of your selected Entity.

• Click on Form Properties to open it.

• On Form Properties page click on Add in Form Libraries to add the web resource.

• On Lookup record page search for your Web Resource that you have created.
• and click on Add.

• After finding the web resource click on Add.

• After adding the web resource .
• Add the Event according to your requirements .
• Click on Add

• Select the web resource in the Library option.
• Paste the name of the function in the Function option.
• Check both the option Enabled and Pass execution context as first parameter .

• Click on Save.
• After saving click on Publish to publish all the customizations.

• Go to CRM and click on  Account Entity .
• Open the particular record on which you want to update.
• Suppose we want to update the Fax field 
• After updating the fax field click on Save as you can se one alert message is pop-up containing record GUID and logical name of the Entity