رشته ها در جاوا اسکریپت

var carname = "Volvo XC60";
var carname = 'Volvo XC60';

=======================

<p id="demo"></p>

<script>

var carName1 = "Volvo XC60";

var carName2 = 'Volvo XC60';

document.getElementById("demo").innerHTML =

carName1 + "<br>" + carName2;

</script>

=========================================

Volvo XC60

Volvo XC60

var answer = "It's alright";
var answer = "He is called 'Johnny'";
var answer = 'He is called "Johnny"';

===========================

<p id="demo"></p>

<script>

var answer1 = "It's alright";

var answer2 = "He is called 'Johnny'";

var answer3 = 'He is called "Johnny"';

document.getElementById("demo").innerHTML =

answer1 + "<br>" + answer2 + "<br>" + answer3;

</script>

========================================

It's alright
He is called 'Johnny'
He is called "Johnny"

var txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var sln = txt.length;

============================================

<p id="demo"></p>

<script>

var txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

document.getElementById("demo").innerHTML = txt.length;

</script>

================================================

26

var y = "We are the so-called "Vikings" from the north."

var x = 'It\'s alright';
var y = "We are the so-called \"Vikings\" from the north."

==========================================

<p id="demo"></p>

<script>

var x = 'It\'s alright';

var y = "We are the so-called \"Vikings\" from the north.";

document.getElementById("demo").innerHTML = x + "<br>" + y;

</script>

====================================================

It's alright
We are the so-called "Vikings" from the north.

document.getElementById("demo").innerHTML =
"Hello Dolly!";

=======================================

<p id="demo"></p>

<script>

document.getElementById("demo").innerHTML =

"Hello Dolly!";

</script>

=========================================

Hello Dolly!

document.getElementById("demo").innerHTML = "Hello \
Dolly!";

============================================

<p id="demo"></p>

<script>

document.getElementById("demo").innerHTML = "Hello \

Dolly!";

</script>

==========================================

Hello Dolly!

document.getElementById("demo").innerHTML = "Hello" +
"Dolly!";

=================================================

<p id="demo"></p>

<script>

document.getElementById("demo").innerHTML = "Hello " +

"Dolly!";

</script>

=================================================

Hello Dolly!

document.getElementById("demo").innerHTML = \
"Hello Dolly!";

========================================

<p id="demo">You cannot break a code line with a \ backslash.</p>

<script>

document.getElementById("demo").innerHTML = \

"Hello Dolly.";

</script>

===========================================================

You cannot break a code line with a \ backslash.

var firstName = "John";

==================

<p id="demo"></p>

<script>

var x = "John";              // x is a string

var y = new String("John");  // y is an object

document.getElementById("demo").innerHTML =

typeof x + "<br>" + typeof y;

</script>

=====================================

string
object

var firstName = new String("John");

Example

var x = "John";
var y = new String("John");

// typeof x will return string
// typeof y will return object

=================================

<p id="demo"></p>

<script>

var x = "John";              // x is a string

var y = new String("John");  // y is an object

document.getElementById("demo").innerHTML = (x==y);

</script>

=============================================

True

=======================================

<p id="demo"></p>

<script>

var x = "John";              // x is a string

var y = new String("John");  // y is an object

document.getElementById("demo").innerHTML = (x===y);

</script>

==============================================

False