JavaScript - Built in Functions - String Functions

In JavaScript, a string is treated as an array. The following are some commonly used string functions:

var myString = "  a quick brown fox  ";
console.log(myString);
console.log(myString.length);
console.log(myString[12]);
console.log(myString.charAt(12));
console.log(myString.concat("jumped over the lazy dog"));
console.log(myString.concat("jumped over the lazy dog").toUpperCase());
console.log(myString.concat("jumped over the lazy dog").toLowerCase());
console.log(myString.concat("jumped over the lazy dog").split(" "));
console.log(myString.trim());
console.log(myString.slice(4,12));


Console Output:

• "  a quick brown fox  "
• 21
• "o"
• "o"
• "  a quick brown fox  jumped over the lazy dog"
• "  A QUICK BROWN FOX  JUMPED OVER THE LAZY DOG"
• "  a quick brown fox  jumped over the lazy dog"
• ["", "", "a", "quick", "brown", "fox", "", "jumped", "over", "the", "lazy", "dog"]
• "a quick brown fox"
• "quick br"

Practice at:

• http://jsbin.com

Refer:

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/slice