> ## Documentation Index
> Fetch the complete documentation index at: https://blog.sumathi.dev/llms.txt
> Use this file to discover all available pages before exploring further.

#  String Methods

* properties
  ```js theme={null}
  let userName = "kalyan\""; // \" is of 1 length 
  console.log(userName.length) // This is a property
  ```

* functions
  * ```js theme={null}
      console.log(userName.toUpperCase()) // This is function ()

      // Kalyan , index starts from 0
      console.log(userName.slice(1,3)) // last index not included

      console.log(userName.slice(1)) // if second is not given goes to end

      console.log(userName.replace("kal","kir")) // replace , case sensitive

      let friend = "pavan"
      console.log(userName.concat("is good frined of ",friend , " !")) 

      let friend2 = " satish      ";
      console.log(friend2)
      console.log(friend2.trim()) // removes spaces and newlines
      // Others string methods are present in mdn string docs
    ```

* ***Strings are immutable***
  * ```js theme={null}
      let a = "ka";
      a[1] = "l";
      console.log(a)
      // All these functions are not mofiying actual srting , string is immutable
    ```