The includes() method is used to find whether one string may be found in another string, returning true or false as appropriate. Here is an example to demonstrate this:
const str = "Hi, I am a JS Developer";console.log(str.includes("JS")); //Output "true"
It takes an optional second parameter representing the position in the string at which to begin searching. Here is an example to demonstrate this:
const str = "Hi, I am a JS Developer";console.log(str.includes("JS", 13)); // Output "false"