Let’s find out the number and string in JavaScript.


Number

JavaScript recognize number without single or double quotes as number.

1
2
alert(1);
alert(1.3 + 2.4);

Use * for multiplication.

1
alert(3 * 5);

Use / for division.

1
alert(10 / 2);

string

Character must be enclosed in either ‘ or “.

1
2
alert("hello !!");
alert('hello !!');

Use + to connect character.

1
2
alert("hello !!" + "my name is Ewan");
alert('hello !!' + 'my name is Ewan');