JavaScript string object toUpperCase method beginner example (used to convert letters to uppercase)

JavaScript toUpperCase method

The toUpperCase method is used to convert (English) strings to uppercase and return the converted string. The syntax is as follows:

The code copy is as follows:

str_object.toUpperCase()

toUpperCase method example

The code copy is as follows:

<script language="JavaScript">

var str = "AaBbCc";

document.write( str.toUpperCase() );

</script>

Run this example and output:

The code copy is as follows:

AABBCC

toLocaleUpperCase method

The toLocaleUpperCase method toUpperCase is basically the same. ToLocaleUpperCase converts strings to uppercase in the local way. Only a few languages ​​(such as Turkish) have locally unique case mappings.