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How to remove a required field from form using javascript?

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Posted on by CU31070723-0

Hello everyone,

I have a form for a Dataverse table that I want to use for different cases. In some cases, some fields on the form are not relevant and I want to remove these fields only in these cases. I tried searching for the way to do it but they only mentioned the case where the fields are not required. In my case, all these fields/columns are set as "business required" because users should fill in all relevant fields before submitting, so even if I can dynamically hide them with javascript, when I click submit form, the error message "Fields ... are required" still shows.

Is there a way I can dynamically remove these fields with javascript? It would be too much work to create and customize a seperated form for each case.

Thanks in advance!

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Fubar 8,338 Super User 2025 Season 2 on at

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Approach it from the other direction, make the field optional, then display it as mandatory (when and as needed) on your form, and push a custom Validator on to the Validator object (the validator code will display as a normal error)

https://learn.microsoft.com/en-us/power-pages/configure/add-custom-javascript#additional-client-side-field-validation

You'll see an example of someone doing similar https://shafiuddinmicrosoftdynamics365crm.wordpress.com/2021/04/20/how-to-make-field-mandatory-and-non-mandatory-using-jquery-in-ms-power-apps-portal/

(you will also find other code in the forums for making fields required),

Also if you have a form where it should always be mandatory and another where it should not you can also add a Metadata record to the form that it needs to be mandatory (the metadata record his has a check box to make it required the form).

https://learn.microsoft.com/en-us/power-pages/configure/configure-basic-form-metadata#basic-form-metadata-type--attribute

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GWham 58 Moderator on at

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function removeValidator(fieldName) { var count = 0; for(var i =0; i < Page_Validators.length - count; i++){ if (Page_Validators[i - count].id == "RequiredFieldValidator" + fieldName) { Page_Validators.splice(i - count, 1); count++; } } $("#" + fieldName + "_label").parent().removeClass("required"); }

You can remove validation using the above JavaScript.

As Fubar mentioned, id maybe swap the logic and make them optional and then add a custom validator instead of removing or make fields required via metadata.

function addValidator(fieldName, fieldLabel) { if (typeof (Page_Validators) == 'undefined') return; // Create new validator $("#" + fieldName + "_label").parent().addClass("required"); var newValidator = document.createElement('span'); newValidator.style.display = "none"; newValidator.id = "RequiredFieldValidator" + fieldName; newValidator.controltovalidate = ""; newValidator.errormessage = "<a href='#" + fieldName + "_label'>" + fieldLabel + " is a mandatory field.</a>"; newValidator.validationGroup = ""; newValidator.initialvalue = ""; newValidator.evaluationfunction = function () { var value = $("#" + fieldName).val(); if (value == null || value == "") { return false; } else { return true; } }; // Add the new validator to the page validators array: Page_Validators.push(newValidator); // Wire-up the click event handler of the validation summary link $("a[href='#" + fieldName + "_label']").on("click", function () { scrollToAndFocus(fieldName + '_label', fieldName); }); }

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SaiRT14 1,990 Super User 2025 Season 2 on at

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Easiest in case of model-driven app - Create Conditional Business Rules:

If you're working in a model-driven app, use business rules to dynamically set the fields as required or not based on conditions that reflect your use cases.

Set conditions in the business rule to mark fields as required when certain criteria are met.

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