Learn Javascript - Full course for beginners #21 - Lowercase, Uppercase, Substring in javascript

Learn Javascript - Full course for beginners - Lesson 21 - String functions - lowercase, uppercase, substring in javascript

Converting to Upper and Lower Case
A string is converted to upper case with toUpperCase():

Example
var text1 = "Hello World!"; // String
A string is converted to lower case with toLowerCase():

Example
var text1 = "Hello World!"; // String
The concat() Method
concat() joins two or more strings:

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