I am working on a SharePoint On-Premises 2013 farm. and inside my Create & Edit form, i want to set a Status Choice field as read-only, then later on to chnage its value inside a JavaScript script.

Now i am using SPUtility.js to make my Status field as ReadOnly, as follow:-

SPUtility.GetSPFieldByInternalName('OrderStatus').MakeReadOnly(); 

But when i try to set its value inside my JavaScript as follow (so when user check a checkbox named “Order Start Working”, to set the Status = “In Progress”):-

$  ('[id^="OrderStartWorking"][id$  ="RadioButtonChoiceField0"]').change(function(){ SPUtility.GetSPFieldByInternalName('OrderStatus').SetValue("In Progress"); }); 

OR using pure JavaScript appraoch:-

$  ('[id^="OrderStartWorking"][id$  ="RadioButtonChoiceField0"]').change(function(){ $  ('[id^="OrderStatus"]').val("In Progress"); }); 

the value did not change to “In Progress”

So I am not sure how i can set a value for a read-only choice list OR if i can remove the ReadOnly from my choice list >> then set its value = “In Progress” >> then make it as ReadOnly again. keeping in mind that i do not want to set the Status choice list as disabled using JavaScript, since in this case the value will not get submitted when i save the Edit/Create forms.