JavaScript Type Operators



Type Operators

OperatorDescriptionJS Example
typeofreturns type of variablea = 5;
console.log(typeof a);
instanceofreturns true if given object is an instance of specified typevar a = new String('apple');
console.log(a instanceof String);

Tutorials

Examples

typeof

a = 4;
output = typeof a;
console.log(output);
a = "hello world";
output = typeof a;
console.log(output);

instance of

a = new String("hello world");
output = a instanceof String;
console.log(output);