Best Way for Conditional Variable Assignment

Question

Which is the better way for conditional variable assignment?

1st method

 if (true) {
   var myVariable = \'True\';
 } else {
   var myVariable = \'False\         


        

Answer 1

There are two methods I know of that you can declare a variable's value by conditions.

Method 1: If the condition evaluates to true, the value on the left side of the column would be assigned to the variable. If the condition evaluates to false the condition on the right will be assigned to the variable. You can also nest many conditions into one statement.

var a = (true)? "true" : "false";

Nesting example of method 1: Change variable A value to 0, 1, 2 and a negative value to see how the statement would produce the result.

var a = 1;
var b = a > 0? (a === 1? "A is 1" : "A is not 1") : (a === 0? "A is zero" : "A is negative");

Method 2: In this method, if the value of the left of the || is equal to zero, false, null, undefined, or an empty string, then the value on the right will be assigned to the variable. If the value on the left of the || does not equal to zero, false, null undefined, or an empty string, then the value on the left will be assigned to the variable.

Although the value on the left can be an undefined value for JS to evaluate the condition but the variable has to be declared otherwise an exception will be produced.

var a = 0;
var b = a || "Another value";