06-types-string.md

String

• used for holding text

• 3 ways to create strings:

  1. using single quotes:

     const first = 'Soumya';

  2. using double quotes:

     const middle = "Ranjan";

  3. using backticks:

      	const last = `Mohanty`;

• single quotes and double quotes are the same thing.

  used for: "she's cool"

  or escaping: 'she\\'s cool'

• backticks:

    const sentence = `she's so "cool"`;
    console.log(sentence); // she's so "cool"

• Multi-line string:

    const song = 'Oh \\
    I like \\
    pizza';
    
    console.log(song); // Oh I like pizza

    const song = `Oh
    I like
    pizza`;
    
    console.log(song); 
    /*
    Oh
    I like
    pizza
    */

  2nd one using backticks is mostly used.

• String concatenation and interpolation

  • '+' is used for concatenation. It is also used for adding 2 nos.
  • Concatenation: when 2 or more strings combined to one
  • Interpolation: when you put a variable inside a string
  • Example 1:

  const name = 'Soumya';

  const hello = 'Hello my name is ' + name + '. Nice to meet you.'

  (can use double or single quotes)

  • Example 2:

  1+1 // 2

  '1'+'1' // 11

  1 + '1' // 11

  • Example 3:

    const name = 'Soumya'; const hello = Hello my name is ${name}. Nice to meet you. I am ${100+1} years old.; console.log(hello); // Hello my name is Soumya. Nice to meet you. I am 101 years old.

  • Backticks also used for tagged template literals.

  • Backticks are helpful for creating HTML:

      const html = `
      	<div>
      		<h2>Hey everyone! I am ${name}.</h2>
      	</div>
      `;