Need Javascript Review

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Posted on by Chrisbra22

Hi,
I am relatively green when it comes to JScript. I need to require a field (text) to have a minimum length of 8 characters. Maximum length is already set at the field properties level.
If field does not have 8 characters, it needs to display a message. I am getting a script error on change of this field when using the following code. I believe it has something to do with the XRM.Page line:

function FieldValidation(context)
{
var field = Xrm.Page.getAttribute("bf_DOT1").getValue();
if(field.length < 8) {
Xrm.Utility.alertDialog("Please enter 8 or more characters in field");
context.getEventArgs().preventDefault();
}
}

Can someone identify the correction that needs to be made here? I then need to apply this to DOT2, DOT3, etc etc. fields on the form on change.

Thanks!

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Verified answer

Abdul Wahab 12,119 Moderator on at

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Hi Chrisbra22,

Check out the below one

function FieldValidation(_executionContext) { try { var formContext = _executionContext.getFormContext(); var field = formContext.getAttribute("bf_dot1").getValue() if (field.length < 8) { Xrm.Navigation.openAlertDialog("Please enter 8 or more characters in field"); _executionContext.getEventArgs().preventDefault(); } } catch (e) { Xrm.Navigation.openErrorDialog("Error: " e.message); } }

If I answer your question then please mark it as verified.

Let me know if I can provide you with more details.

Thanks
Regards,

Abdul Wahab
Power Platform & Customer Engagement Developer/Lead/Solution Architecture/Project Manager
Direct/WhatsApp: 923323281237
E-mail: abdulwahabubit@outlook.com
Skype: abdul.wahabubit
Linkedin: www.linkedin.com/.../

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Chrisbra22 on at

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Thanks! It does work, but it throws this error before the alert dialog appears:

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Abdul Wahab 12,119 Moderator on at

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Hi Chrisbra22,

that is interesting. Can you please replace Xrm.Navigation.openAlertDialog("Please enter 8 or more characters in field"); with alert("Please enter 8 or more characters in field"); ?

If I answer your question then please mark it as verified.

Let me know if I can provide you with more details.

Thanks
Regards,

Abdul Wahab
Power Platform & Customer Engagement Developer/Lead/Solution Architecture/Project Manager
Direct/WhatsApp:+923323281237
E-mail: abdulwahabubit@outlook.com
Skype: abdul.wahabubit
Linkedin: www.linkedin.com/.../

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Chrisbra22 on at

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That seemed to improve the performance...
It shows the dialog first now, and then the odd error!

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Abdul Wahab 12,119 Moderator on at

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Hi Chrisbra22,

Remove it Xrm.Navigation.openErrorDialog("Error: " + e.message); and check

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Chrisbra22 on at

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Success! No more error. Thanks.

One other thing...if I want to prevent the record from being saved until there is at least 8 characters in the fields, what can I add to the code?

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Abdul Wahab 12,119 Moderator on at

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Hi Chrisbra22,

Remove try and catch also and check.

If I answer your question then please mark it as verified.

Let me know if I can provide you with more details.

Thanks
Regards,

Abdul Wahab
Power Platform & Customer Engagement Developer/Lead/Solution Architecture/Project Manager
Direct/WhatsApp:+923323281237
E-mail: abdulwahabubit@outlook.com
Skype: abdul.wahabubit
Linkedin: www.linkedin.com/.../

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Chrisbra22 on at

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Just to clarify - are you saying to remove lines 2 and 9 (from your example code) completely?

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Abdul Wahab 12,119 Moderator on at

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Hi Chrisbra22,

Use exactly below one

function FieldValidation(_executionContext) {

var formContext = _executionContext.getFormContext();
var field = formContext.getAttribute("bf_dot1").getValue()
if (field.length < 8) {
alert("Please enter 8 or more characters in field");
_executionContext.getEventArgs().preventDefault();
}

}

If I answer your question then please mark it as verified.

Let me know if I can provide you with more details.

Thanks
Regards,

Abdul Wahab
Power Platform & Customer Engagement Developer/Lead/Solution Architecture/Project Manager
Direct/WhatsApp:+923323281237
E-mail: abdulwahabubit@outlook.com
Skype: abdul.wahabubit
Linkedin: www.linkedin.com/.../

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Chrisbra22 on at

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It does not work, it throws this script error:

TypeError: Cannot read properties of undefined (reading 'preventDefault')

at FieldValidation (bridgestonevandev.crm.dynamics.com/.../bf_DOTFieldLengthValidation:7:33)

at y._executeFunctionInternal (bridgestonevandev.crm.dynamics.com/.../app.js

at y.execute (bridgestonevandev.crm.dynamics.com/.../app.js

at bridgestonevandev.crm.dynamics.com/.../app.js

at i (bridgestonevandev.crm.dynamics.com/.../app.js

at ee._executeIndividualEvent (bridgestonevandev.crm.dynamics.com/.../app.js

at ee._executeEventHandler (bridgestonevandev.crm.dynamics.com/.../app.js

at Object.execute (bridgestonevandev.crm.dynamics.com/.../app.js

at N._executeSyncAction (bridgestonevandev.crm.dynamics.com/.../app.js

at N._executeSync (bridgestonevandev.crm.dynamics.com/.../app.js

Error Details:

Event Name: onchange

Function Name: FieldValidation

Web Resource Name: msdyn_/WorkOrderProduct/WorkOrderProduct.Library.js

Solution Name: msdyn_FieldService_patch_update

Publisher Name: microsoftdynamics

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