JAVASCRIPT

js String

"Hello World"
'Hello World'
"Hello " World"
"Hello  World"
"Hello n World"
'Hello ' World'
'Hello t World'

//Concatenation
"Hello" + "World"


var x = "Hello World";

//Length of String
x.length; //It is a property

//Indexing
"Hello World"[0]
"Hello World"[3]
x = "Hello World";
x[0]
x[3]

//Immutable
x[1]
x[1] = "5"
x[1]


// return a new string, doesn't change x
//These are methods
x.slice(1, 5);
x.slice(-6, -1);
x.substr(3, 2); // 2nd parameter means the length
x.replace("Hello", "World");
x.toUpperCase();
x.toLowerCase();
x.concat("1", "2");
x.trim();


//links
//https://www.w3schools.com/jsref/jsref_obj_string.asp
//https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String

JavaScript String() Function

const a = 225; // number
const b = true; // boolean

//converting to string
const result1 = String(a);
const result2 = String(b);

console.log(result1); // "225"
console.log(result2); // "true"

JavaScript String

//strings example
const name = 'ram';
const name1 = "hari";
const result = `The names are ${name} and ${name1}`;

Javascript string

'I'.repeat(3)

 // III

string js

const string1 = "A string primitive";
const string2 = 'Also a string primitive';
const string3 = `Yet another string primitive`;
const string4 = new String("A String object");

string in js

let str1 = 'hello'
let str2 = 'hello'
let strObj1 = new String('hello');
let strObj2 = new String('hello');

console.log(str1 === str2) // true

console.log(str1 == strObj1) // true
console.log(str1 === strObj1) // false

console.log(strObj1 == strObj2) // false

Javascript Strings

// JavaScript String
const data =
{
    "name": "John Doe",
    "age": 45
}
function Sample() { return "TEXT"; }

var str1 = 'With " in it "';
var str2 = "With ' in it '";
var str3 = `Contains other Strings >${str1}<, Properties of objects >${data.age}< or return values from functions >${Sample()}<.`;

console.log(str1); // With " in it "
console.log(str2); // With ' in it '
console.log(str3); // Contains other Strings >With " in it "<, Properties of objects >45< or return values from functions >TEXT<.

js string

var myString = "foobar";
//Can use single quotes, double quotes, or backticks for template literals.