if operator javascript code example

Example 1: or statment javscript

if (x === 5 || x === 8)
  console.log("x is eaqual to 5 OR 8")

Example 2: ternary operator in javascript

FullName: (obj.FirstName && obj.LastName) ? obj.FirstName + " " + obj.LastName : "missing values",

Example 3: if javascript

if (a > 0) {
    result = 'positive';
  } else {
    result = 'NOT positive';
  }

Example 4: javascript conditional evaluation

if ( expression )
Here are some expressions and their result
	Undefined: false
	Null: false
	Boolean: the result equals the input argument (no conversion)
	Number: false if the argument is +0, -0, or NaN; otherwise true
	String: false if the argument is an empty string (length = 0); 
			otherwise true
	Object: true

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