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Transform Text From One Case to Another Using JavaScript

Posted by Nitesh Luharuka Articles | JavaScript April 01, 2013
This article shows how to transform text from one case to another using JavaScript.
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Friends,

This article will describe converting text from one case to another using JavaScript. In general programming, we need to convert text to the following cases:

  • Lower Case
  • Upper Case
  • Title Case

We will see the conversion one by one below.

To convert a text into lowercase using JavaScript:

    function toLowerCase(str) {
       
return str.toLowerCase();
    }

You can use this as in the following:

alert(toLowerCase("HELLO WORLD"));

To convert text into uppercase using JavaScript:

    function toUpperCase(str) {
       
return str.toUpperCase();
    }

You can use this as in the following:

alert(toUpperCase("hello world"));

To convert text into Titlecase using JavaScript:

   
function toTitleCase(str) {
       
return str.replace(/\w\S*/g,
       
function (txt) {
            
return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
        });
    }

You can use this by calling:

alert(toTitleCase("hello world"));

Hope you all enjoyed reading this article. Let me know your thoughts and views via comments.

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