The method of adding JavaScript string operators, strings and numbers

This article introduces the knowledge of "JavaScript string operator, string and number addition method". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

JavaScript string operator

The + operator can also be used to add (concatenate, cascade) strings.

Example

Txt1 = "Bill"

Txt2 = "Gates"

Txt3 = txt1 + "" + txt2

The result of txt3 will be:

Bill Gates

The + = assignment operator can also be used to add (cascade) strings:

Example

Txt1 = "Hello"

Txt1 + = "Kitty!"

The result of txt1 will be:

Hello Kitty!

Tip: when used for strings, the + operator is called the cascading operator.

The addition of strings and numbers

Adding two numbers returns a sum, but adding a number to a string returns a string:

Example

X = 7 + 8

Y = "7" + 8

Z = "Hello" + 7

The results of x, y, and z will be:

fifteen

seventy-eight

Hello7

Tip: if you add a number to a string, the result will be a string!

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