JavaScript Logical Operators Explained with Examples

 

  Logical Operator

  1]  logical and (&&)

  2] logical or ( | | )

  3]  logical ( ! )

Logical Operator 

Example :-

 Logical Operator

  1]  logical and (&&)

Example :-

//True and False value = False

 let s =true;

 let t=false;

  let result= s && t;

  console.log(result);

  // True and True value = True

  let u = true;

  let v= true;

  let result1= u&&v;

  console.log(result1);

  //False and True value = False

  let w=false;

  let x=true;

  let result2= w && x;

  console.log(result2);

  //False and False value = False

  let y=false;

  let z=false;

  let result3=y &&z;

  console.log(result3);

Output:-

  2] logical or ( | | ) 

Example :-

//True and False value = True

 let s =true;

 let t=false;

  let result= s || t;

  console.log(result);

  // True and True value = True

  let u = true;

  let v= true;

  let result1= u||v;

  console.log(result1);

  //False and True value = True

  let w=false;

  let x=true;

  let result2= w || x;

  console.log(result2);

  //False and False value = False

  let y=false;

  let z=false;

  let result3=y ||z;

  console.log(result3);

Output:-

  3]  logical ( ! )

Example :-

// value not true = false

let q=true;

let result =!q;

console.log(result);

// value not false = true

 let a= false;

 let result2=!a;

 console.log(result2);

Output:-

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