String Methods

String methods are ready made helpers for text.

They can search, cut, change case, and clean spaces.

Think of a craft kit for words.

toUpperCase and toLowerCase

These make all letters big or small.

trim

trim() removes extra spaces from the ends.

Great for cleaning form answers.

includes and indexOf

includes asks if the text is there.

indexOf tells where it starts, or -1 if missing.

slice

slice cuts out a piece using start and end indexes.

The end index is not included.

replace

replace swaps the first match it finds.

split and join ideas

split breaks a string into an array.

Then you can work with each piece.

Tip: Methods return new text. Save the result if you want to keep it.