function when select option in javascript code example

Example 1: jquery enable submit button

//jQuery 1.6+ use:
$("#submitButtonID").prop('disabled', true); //disable 
$("#submitButtonID").prop('disabled', false); //enable

//jQuery 1.5 and below use:
$("#submitButtonID").attr('disabled','disabled'); //disable 
$("#submitButtonID").removeAttr('disabled'); //enable

Example 2: javascript function with condition in parameter

function myFuntionName(condition) {
	//this example uses an if statement
  	if (condition) {
    	//code 
    }
}

//call the function
let a = 8;
myFunctionName(a > 7);//a > 7 is converted into boolean before it is processed in the function