How to make field visible by using client script

[sasi]

In change request there is field 'Risk', this Risk field is choice list.once choice is 'high' selected from Risk field i want 'access' field in the change task should visible. i can do this by using UI policy. but to do by using client script. for my requirement i need to use client script. 

[Prateek kumar]

https://developer.servicenow.com/app.do#!/api_doc?v=newyork&id=r_GlideFormSetVisible_String_Boolean

[DScroggins]

Hello,

Create an onChange Client Script on the Risk field then add following logic:

if(newValue == 'high'){

g_form.setDisplay('Access','true');

}else{

g_form.setDisplay('Access','false');

}