JavaScript Ternary Operator

Below is the example of the Ternary Operator.

• Example:
  Program 1:

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  <script>       function gfg() {        //JavaScript to illustrate      //Conditional operator         let PMarks = 40      let result = (PMarks > 39)?          "Pass":"Fail";         document.write(result);      }       gfg();   </script>

• Output:

  Pass

“Question mark” or “conditional” operator in JavaScript is a ternary operator that has three operands.

• The expression consists of three operands: the condition, value if true and value if false.
• The evaluation of the condition should result in either true/false or a boolean value.
• The true value lies between “?” & “:” and is executed if the condition returns true. Similarly, the false value lies after “:” and is executed if the condition returns false.

Syntax:

condition ? value if true : value if false

condition:
• Expression to be evaluated which returns a boolean value.

  value if true:

• Value to be executed if condition results in true state.

  value if false:

• Value to be executed if condition results in false state.

Examples:

Input: let result = (10 > 0) ? true : false;
Output: true

Input: let message = (20 > 15) ? "Yes" : "No";
Output: Yes

The following programs will illustrate conditional operator more extensively:

Program 1:

Output:

Senior Citizen

An example of multiple conditional operators.
Program 2:

Output:

Excellent