UI Page How to make mandatory text area field

[Anish9515]

Hi @ANKUR BAWISKAR

How to make mandatory text area field  in UI page?
Let me know how to client script in ui page 
I wanna use this UI pages on change request table  , Some one changes Planned start& end date to past date they mentioned additional information makes mandatory , Below screenshot when i on click uiaction button on change request table

whatever reflects UI page output should reflect on my Change request table

Please help me on this @Ankur Bawiskar 

Regards ,

Suresh

[Bert_c1]

Hi,

One way is setting the "Mandatory" field to true on the sys_dictionary record for "Additional information"

https://docs.servicenow.com/search?q=Make%20a%20field%20mandatory

[Michael James2]

Try adding the mandatory attribute to the HTML.

<textarea mandatory="true" .....  />

[Ankur Bawiskar]

@Anish9515 

try method suggested by Michael.

Also you can use onSubmit validation on UI page

[Anish9515]

I tired mandatory = true it doesn't work , My additional information doesn't make into mandatory