JS Basic String Methods

Here is a list of few basic string methods:

• Length, check length of a string

const myString = "I love coding";
console.log(myString.length);

• Trim, remove whitespaces at the beginning and at the end of string.

const myString = "  I love coding  ";
console.log(myString.length); // 17
console.log(myString.trim()); // "I love coding"
console.log(myString.trim().length); // 13

• Split, convert a string to an array.

const myString = "I love coding";
const arr = myString.split(" ");
console.log(arr);
// ['I', 'love', 'coding'];

• Includes, returns true if a string contains a particular string. In other case return false.

const myString = "I love coding";
if(myString.includes("coding")) {
 console.log('yes');
} else {
 console.log('no');
}
// yes

• Char At, get the character at a specific position in a string.

const myString = "I love coding";
const myChar = myString.charAt(7);
console.log(myChar); // c

• Slice, extract a part of a particular string.

const myString = "I love coding";
const text = myString.slice(2,6);
console.log(text); // love

• To lower case, convert the string to lowercase letters.

const myString = "I LOVE CODING";
console.log(myString.toLowerCase());
// i love coding

• ** To upper case**, convert the string to uppercase letters.

const myString = "I love coding";
console.log(myString.toUpperCase());
// I LOVE CODING

• Replace, returns a new string with a text replaced by different text.

const myString = "I love coding";
const replacedSring = myString.replace('coding', 'programming');
console.log(replacedString);
// I love programming

• Concat, concat string arguments to a particular string.

const myString = "I love coding";
const newString = "& designing";
const concatedString = myString.concat(' ', newString);
// I love coding & designing

• Starts with, returns true if a string starts with a particular string.

const myString = "I love coding";
myString.startsWith('coding') ? (console.log('yes')) : console.log('no'));
// no

• Ends with, returns true if ends with a particular string.

const myString = "I love coding";
myString.endsWith('coding') ? (console.log('yes')) : console.log('no'));
// yes

I hope you find these functions helpful. You can also share more functions in the comment section.

Thank You.