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Javascript in dynamics crm

How to get account related information when loading the contact form, for example I want to get account related fax value when i enter the account name on contact form . explain with the code

Hi,

I added a Text Area field to the Contact form to display the account's fax.

The code is as follows.

function onload(executionContext){
  var formContext = executionContext.getFormContext();
  //Gets the value of the Account Lookup field.
  var account = formContext.getAttribute("parentcustomerid");
   //If the Account Lookup field is empty, exit and clear the Text Area field. 
  if(!account){
    formContext.getAttribute("cr8a7_textarea").setValue(null)
    return;
  }
  //Get the ID of the account record in the account lookup field
  var accountId = account[0].id;
  
  //Retrieves the value of this account record.
  Xrm.WebApi.retrieveRecord("account", accountId, "?$select=name,fax").then(
    function success(result) {
        
        // Populate the Text Area field with the fax for this account record.
      formContext.getAttribute("cr8a7_textarea").setValue("Retrieved values: Name: " + result.name + ", Fax: " + result.fax)
        
    },
    function (error) {
        console.log(error.message);
        // handle error conditions
    }
);
 
}

If my answer was helpful, please click Like, and if it solved your problem, please mark it as verified to help other community members find more.
If you have further questions, please feel free to contact me .

Best Regards,
Dengliang Li

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