In JavaScript, we can use the toLowerCase
method to convert a string into a lowercase string. The toLowerCase
method will return a new string.
var str = "UPPER Case"; var lowerCaseStr = str.toLowerCase(); console.log(lowerCaseStr);
In JavaScript, we can also use the toUpperCase
method to convert a string into an uppercase string. The toUpperCase
method will return a new string.
var str = "uppercase"; var upperCaseStr = str.toUpperCase(); console.log(upperCaseStr);
We don’t have any in-build method to capitalize a string. However, we can implement our own method. The steps to capitalize a string are:
function capitalize(str) { const lowerCaseString = str.toLowerCase(), // convert string to lower case firstLetter = str.charAt(0).toUpperCase(), // upper case the first character strWithoutFirstChar = lowerCaseString.slice(1); // remove first character from lower case string return firstLetter + strWithoutFirstChar; } console.log(capitalize("javaScript")); console.log(capitalize("educative.io"));
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