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README.md

1.Practice it by yourself in console (4-5 times to understand)

2.Data types of parameters

3.Return value type

4.Write three examples

In your own words, explain what this method does.

1.charAt

1. Parameter: index, default to 0. (number data type)

2. Return: Character at specific inderx in the string

3. Example:

     let user = "Rockey";
    user.charAt(2); // "c"
    let city = "New York";
    city.charAt(5);  // "o"

4. CharAt accepts index and return the character on that index.

2.toUpperCase

1. Parameter: not required input in parameter

2. Return: New String and conver to upper case

3. Example:

    let user = "Rockey";
    user.toUpperCase(); // "ROCKEY"
    let city = "New York";
    city.toUpperCse();  // "NEW YORK"

4. toUpperCase accept string and covert into upper case

3.toloweerCase

1. Parameter: not required input in parameter

2. Return: New String and conver to lower case

3. Example:

    let user = "Rockey";
    user.toLowerCase(); // "rocket"
    let city = "New York";
    city.toLowerCse();  // "new york"

4. toLowerCase accept string and covert into lower case

4.trim

1. Parameter: not required input in parameter

2. Return: New String and remove whitespace from both side

3. Example:

    let user = "      Rockey      ";
    user.trim(); // "Rocket"
    let city = "  New York       ";
    city.trim();  // "New York"

4. trim accept string and remove whitespace from string

5.trimEnd

1. Parameter: not required input in parameter

2. Return: New String and remove whitespace from end of string

3. Example:

    let user = "      Rockey      ";
    user.trim(); // "        Rocket"
    let city = "  New York       ";
    city.trim();  // "        New York"

4. trimEnd accept string and remove whitespace from end of string

6.trimStart

1. Parameter: not required input in parameter

2. Return: New String and remove whitespace from starting of string

3. Example:

    let user = "      Rockey      ";
    user.trim(); // "Rocket      "
    let city = "  New York       ";
    city.trim();  // "New York     "

4. trimEnd accept string and remove whitespace from starting of string

7.concat

1. Parameter: one or more string (string data type)

2. Return: All string concatinated in one string

3. Example:

    let Hello = "Hello";
    let city = "New York";
    
    hello.concat( " ", "city")

4. concat accept string and concatinate at single string

8.endsWith

1. Parameter: Character search at end (string data type)

2. Return: boolean value

3. Example:

    let user = "Rockey";
    user.endsWith(y)  // true
     
    let city = "New York";
    city.endsWith(y)  // false

4. endsWith accept string and check either it end with given value

9.includes

1. Parameter: Character is included in string (string data type)

2. Return: boolean value

3. Example:

    let user = "Rockey";
    user.includes("y")  // true
     
    let city = "New York";
    city.includes("a")  // false

4. includes accept string and check the given value is included in string or not and return in boolean value.

10.indexOf

1. Parameter: Character's position in string (string data type)

2. Return: position of chatacter(number data type) if not return -1

3. Example:

    let learn = "learning web development is not easy";
    learn.indexOf("is")  // 23
    learn.indexOf("fun") // -1

4. indexOf accept string and check the position of given value of not return -1

11.lastIndexOf

1. Parameter: String end with given character (string data type)

2. Return: position of chatacter(number data type) if not return -1

3. Example:

    let learn = "learning web development is not easy";
    learn.lastIndexOf("t")  // 30
    learn.lastIndexOf("f") // -1

4. lastIndexOf accept string and check the either it end with given value if so retuen position of character if not return -1.

12.padEnd

1. Parameter: total character lenght (number data type) and character add at end (string data type)

2. Return: String with padding at last, if given vvalue, it will add at end

3. Example:

    let user = "Rockey";
    user.padEnd(12, "$")  // "Rockey$$$$$$"
    user,padEnd(10, "!") //  "Rockey!!!!"

4. padEnd take input of total lenght of string and character added at last, it return string with padding at ending or character which we assign

13.padStart

1. Parameter: total character lenght (number data type) and character add at starting (string data type)

2. Return: String with padding at starting, if given value, it will add at starting

3. Example:

    let user = "Rockey";
    user.padStart(12, "$")  // "$$$$$$Rockey"

    24.padStart(5, 0)    // 00024

4. padEnd take input of total lenght of string and character added at starting, it return string with padding at starting or character which we assigned

14.repeat

1. Parameter: no of times repeat (number data type)

2. Return: String with repeated value

3. Example:

    let user = "Rockey";
    user.repeat(3)  // "RockeyRockeyRockey"

    24.padStart(5)    // 2424242424

4. repeat take input of number and return the value that numbers of time in string

15.replace

1. Parameter: replaccble character with given character (string data type)

2. Return: replace by given character

3. Example:

    let user = "Rockey";
    user.replace("e", "o")  // "Rockoy"

    let learn = "learning web development is not easy";
    learn.replace("i", "o")  // "learnong web development os not easy"

4. replace replace the value which we assign to replace.

16.slice

1. Parameter: biginIndex, or and endindex (number data type)

2. Return: Character from biginindex to endindex

3. Example:

    let learn = "learning web development is not easy";
    learn.slice(2, 20)  // "arning web develop"
    learn.slice(10)   //  "eb development is not easy"

4. slice only show character between given parameter

17.split

1. Parameter:

2. Return: return array split with space in world

3. Example:

let learn = "learning web development is not easy";
    learn.split("");
(36) ["l", "e", "a", "r", "n", "i", "n", "g", " ", "w", "e", "b", " ", "d", "e", "v", "e", "l", "o", "p", "m", "e", "n", "t", " ", "i", "s", " ", "n", "o", "t", " ", "e", "a", "s", "y"]

4.

18.substring

1. Parameter: biginIndex, or and endindex (number data type)

2. Return: Character from biginindex to endindex

3. Example:

    let learn = "learning web development is not easy";
    learn.slice(2, 20)  // "arning web develop"
    learn.slice(10)   //  "eb development is not easy"

4.its same like slice but can return according to reverse input.like we can input (20,2) inplace of(2,20)