ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ ﺭﺍﺮﮑﺗ


فهرست مطالب

    نمایش فهرست مطالب


.ﺪﻨﻨﮐ ﯽﻣ ﻞﻤﻋ ﯼﺍ ﻪﯾﺍﺭﺁ ﻢﺘﯾﺁ ﺮﻫ ﯼﻭﺭ ﻪﯾﺍﺭﺁ ﺭﺍﺮﮑﺗ ﯼﺎﻫ ﺵﻭﺭ


forEach() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺪﻨﮐ ﯽﻣ ﯽﻧﺍﻮﺧﺍﺮﻓ ﺍﺭ (ﺱﺎﻤﺗ ﻪﺑ ﺦﺳﺎﭘ ﻊﺑﺎﺗ ﮏﯾ) ﻊﺑﺎﺗ ﮏﯾ ﺭﺎﺑ ﮏﯾ ﻪﯾﺍﺭﺁ ﺮﺼﻨﻋ ﺮﻫ ﯼﺍﺮﺑ forEach()

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let txt = "";
numbers.forEach(myFunction);

function myFunction(value, index, array) {
   
txt += value + "<br>";
}

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The forEach() Method</h2>

<p>Call a function once for each array element:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];

let txt = "";
numbers.forEach(myFunction);
document.getElementById("demo").innerHTML = txt;

function myFunction(value, index, array) {
  txt += value + "<br>"; 
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﺩﺮﮐ ﯽﺴﯾﻮﻧﺯﺎﺑ ﻥﺍﻮﺗ ﯽﻣ ﺍﺭ ﻝﺎﺜﻣ .ﺪﻨﮐ ﯽﻣ ﻩﺩﺎﻔﺘﺳﺍ ﺭﺍﺪﻘﻣ ﺮﺘﻣﺍﺭﺎﭘ ﺯﺍ ﻂﻘﻓ ﻻﺎﺑ ﻝﺎﺜﻣ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let txt = "";
numbers.forEach(myFunction);

function myFunction(value) {
   
txt += value + "<br>"; 
}

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The forEach() Method</h2>

<p>Call a function once for each array element:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];

let txt = "";
numbers.forEach(myFunction);
document.getElementById("demo").innerHTML = txt;

function myFunction(value) {
  txt += value + "<br>"; 
}
</script>

</body>
</html>

map() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺪﻨﮐ ﯽﻣ ﺩﺎﺠﯾﺍ ﻪﯾﺍﺭﺁ ﺮﺼﻨﻋ ﺮﻫ ﯼﻭﺭ ﻊﺑﺎﺗ ﮏﯾ ﻡﺎﺠﻧﺍ ﺎﺑ ﺪﯾﺪﺟ ﻪﯾﺍﺭﺁ ﮏﯾ map() ﺵﻭﺭ

ﺪﻨﮐ ﯽﻤﻧ ﺍﺮﺟﺍ ﺍﺭ ﻪﯾﺍﺭﺁ ﻊﺑﺎﺗ map() ﺵﻭﺭ

.ﺪﻫﺩ ﯽﻤﻧ ﺮﯿﯿﻐﺗ ﺍﺭ ﯽﻠﺻﺍ ﻪﯾﺍﺭﺁ map() ﺵﻭﺭ

:ﺪﻨﮐ ﯽﻣ ﺏﺮﺿ 2 ﺭﺩ ﺍﺭ ﻪﯾﺍﺭﺁ ﺮﻫ ﺭﺍﺪﻘﻣ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers1 = [45, 4, 9, 16, 25];
const numbers2 = numbers1.map(myFunction);
  
function myFunction(value, index, array) {
    return value * 2;
}

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The map() Method</h2>

<p>Create a new array by performing a function on each array element:</p>

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

<script>
const numbers1 = [45, 4, 9, 16, 25];
const numbers2 = numbers1.map(myFunction);

document.getElementById("demo").innerHTML = numbers2;

function myFunction(value, index, array) {
  return value * 2;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﺪﻨﮐ ﯽﻣ ﻩﺩﺎﻔﺘﺳﺍ ﻪﯾﺍﺭﺁ ﻭ ﺺﺧﺎﺷ ،ﺭﺍﺪﻘﻣ ﺮﺘﻣﺍﺭﺎﭘ ﺯﺍ ﻂﻘﻓ ﺱﺎﻤﺗ ﻪﺑ ﺦﺳﺎﭘ ﻊﺑﺎﺗ ﮏﯾ ﻪﮐ ﯽﻣﺎﮕﻨﻫ

ﻝﺎﺜﻣ

const numbers1 = [45, 4, 9, 16, 25];
const numbers2 = numbers1.map(myFunction);
  
function myFunction(value) {
    return value * 2;
}

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The map() Method</h2>

<p>Create a new array by performing a function on each array element:</p>

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

<script>
const numbers1 = [45, 4, 9, 16, 25];
const numbers2 = numbers1.map(myFunction);

document.getElementById("demo").innerHTML = numbers2;

function myFunction(value) {
  return value * 2;
}
</script>

</body>
</html>

flatMap() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

ES2019 ﺪﺘﻣ Array flatMap() ﺩﺮﮐ ﻪﻓﺎﺿﺍ ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﺑ ﺍﺭ.

.ﺪﻨﮐ ﯽﻣ ﻢﯿﺳﺮﺗ ﺍﺭ ﻪﯾﺍﺭﺁ ﮏﯾ ﺮﺻﺎﻨﻋ ﻪﻤﻫ ﺍﺪﺘﺑﺍ flatMap() ﺵﻭﺭ

ﻝﺎﺜﻣ

const myArr = [1, 2, 3, 4, 5, 6];
const newArr = myArr.flatMap((x) => x * 2);

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The flatMap() Method</h2>

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

<script>
const myArr = [1, 2, 3, 4, 5,6];
const newArr = myArr.flatMap((x) => x * 2);
document.getElementById("demo").innerHTML = newArr;
</script>

</body>
</html>

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ 2020 ﻪﯾﻮﻧﺍﮊ ﺯﺍ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻪﻤﻫ ﺭﺩ flatMap() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

Chrome 69 Edge 79 Firefox 62 Safari 12 Opera 56
Sep 2018 Jan 2020 Sep 2018 Sep 2018 Sep 2018


filter() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺩﺭﺍﺬﮔ ﯽﻣ ﺮﺳ ﺖﺸﭘ ﺖﯿﻘﻓﻮﻣ ﺎﺑ ﺍﺭ ﺶﯾﺎﻣﺯﺁ ﮏﯾ ﻪﮐ ﺪﻨﮐ ﯽﻣ ﺩﺎﺠﯾﺍ ﻪﯾﺍﺭﺁ ﺮﺻﺎﻨﻋ ﺎﺑ ﺪﯾﺪﺟ ﻪﯾﺍﺭﺁ ﮏﯾ filter

:ﺪﻨﮐ ﯽﻣ ﺩﺎﺠﯾﺍ 18 ﺯﺍ ﺮﺘﮔﺭﺰﺑ ﺭﺍﺪﻘﻣ ﺎﺑ ﺮﺻﺎﻨﻋ ﺯﺍ ﺪﯾﺪﺟ ﻪﯾﺍﺭﺁ ﮏﯾ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
const over18 = numbers.filter(myFunction);

function myFunction(value, index, array) {
  return value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The filter() Method</h2>

<p>Create a new array from all array elements that passes a test:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
const over18 = numbers.filter(myFunction);

document.getElementById("demo").innerHTML = over18;

function myFunction(value, index, array) {
  return value > 18;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﺪﻨﮐ ﯽﻤﻧ ﻩﺩﺎﻔﺘﺳﺍ ﻪﯾﺍﺭﺁ ﻭ ﺺﺧﺎﺷ ﺯﺍ callback ﻊﺑﺎﺗ ،ﻻﺎﺑ ﻝﺎﺜﻣ ﺭﺩ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
const over18 = 
  numbers.filter(myFunction);
function myFunction(value) {
  return value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The filter() Method</h2>

<p>Create a new array with all array elements that passes a test.</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
const over18 = numbers.filter(myFunction);

document.getElementById("demo").innerHTML = over18;

function myFunction(value) {
  return value > 18;
}
</script>

</body>
</html>

reduce() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.(ﺪﻫﺩ ﺶﻫﺎﮐ ﻥﺁ ﻪﺑ) ﺪﻨﮐ ﺪﯿﻟﻮﺗ ﺪﺣﺍﻭ ﺭﺍﺪﻘﻣ ﮏﯾ ﺎﺗ ﺪﻨﮐ ﯽﻣ ﺍﺮﺟﺍ ﻪﯾﺍﺭﺁ ﺮﺼﻨﻋ ﺮﻫ ﯼﻭﺭ ﺍﺭ ﻊﺑﺎﺗ ﮏﯾ reduc

.ﺪﯿﻨﮐ ﻪﻌﺟﺍﺮﻣ reduceRight() ﻪﺑ ﻦﯿﻨﭽﻤﻫ .ﺪﻨﮐ ﯽﻣ ﺭﺎﮐ ﻪﯾﺍﺭﺁ ﺭﺩ ﺖﺳﺍﺭ ﻪﺑ ﭗﭼ ﺯﺍ

.ﺪﻫﺩ ﯽﻤﻧ ﺶﻫﺎﮐ ﺍﺭ ﯽﻠﺻﺍ ﻪﯾﺍﺭﺁ reduce() ﺵﻭﺭ

:ﺪﻨﮐ ﯽﻣ ﺍﺪﯿﭘ ﺍﺭ ﻪﯾﺍﺭﺁ ﮏﯾ ﺩﺍﺪﻋﺍ ﻡﺎﻤﺗ ﻉﻮﻤﺠﻣ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduce(myFunction);
  
function myFunction(total, value, index, array) {
  
  return total + value;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The reduce() Method</h2>

<p>Find the sum of all numbers in an array:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduce(myFunction);

document.getElementById("demo").innerHTML = "The sum is " + sum;

function myFunction(total, value, index, array) {
  return total + value;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 4 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • (ﯽﻠﺒﻗ ﯽﺘﺸﮔﺮﺑ ﺭﺍﺪﻘﻣ/ﻪﯿﻟﻭﺍ ﺭﺍﺪﻘﻣ) ﻞﮐ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﻪﺷﺎﺑ ﻪﻧﻮﺘﯿﻣ .ﺪﻨﮐ ﯽﻤﻧ ﻩﺩﺎﻔﺘﺳﺍ ﻪﯾﺍﺭﺁ ﻭ ﺺﺧﺎﺷ ﯼﺎﻫﺮﺘﻣﺍﺭﺎﭘ ﺯﺍ ﻻﺎﺑ ﻝﺎﺜﻣ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduce(myFunction);
  
function myFunction(total, value) {
  
  return total + value;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The reduce() Method</h2>

<p>Find the sum of all numbers in an array:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduce(myFunction);

document.getElementById("demo").innerHTML = "The sum is " + sum;

function myFunction(total, value) {
  return total + value;
}
</script>

</body>
</html>

:ﺩﺮﯾﺬﭙﺑ ﺍﺭ ﻪﯿﻟﻭﺍ ﺭﺍﺪﻘﻣ ﮏﯾ ﺪﻧﺍﻮﺗ ﯽﻣ reduce() ﺵﻭﺭ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduce(myFunction, 
  100);
  
function myFunction(total, value) {
  return total + value;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The reduce() Method</h2>

<p>Find the sum of all numbers in an array:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduce(myFunction, 100);

document.getElementById("demo").innerHTML = "The sum is " + sum;

function myFunction(total, value) {
  return total + value;
}
</script>

</body>
</html>

reduceRight() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.(ﺪﻫﺩ ﺶﻫﺎﮐ ﻥﺁ ﻪﺑ ﺍﺭ ﻥﺁ) ﺪﻨﮐ ﺪﯿﻟﻮﺗ ﺪﺣﺍﻭ ﺭﺍﺪﻘﻣ ﮏﯾ ﺎﺗ ﺪﻨﮐ ﯽﻣ ﺍﺮﺟﺍ ﻪﯾﺍﺭﺁ ﺮﺼﻨﻋ ﺮﻫ ﯼﻭﺭ ﺍﺭ ﻊﺑﺎﺗ ﮏﯾ

reduceRight() ﻪﺑ ﻦﯿﻨﭽﻤﻫ .ﺪﻨﮐ ﯽﻣ ﺭﺎﮐ ﻪﯾﺍﺭﺁ ﺭﺩ ﭗﭼ ﻪﺑ ﺖﺳﺍﺭ ﺯﺍ

.ﺪﻫﺩ ﯽﻤﻧ ﺶﻫﺎﮐ ﺍﺭ ﯽﻠﺻﺍ ﻪﯾﺍﺭﺁ reduceRight() ﺵﻭﺭ

:ﺪﻨﮐ ﯽﻣ ﺍﺪﯿﭘ ﺍﺭ ﻪﯾﺍﺭﺁ ﮏﯾ ﺩﺍﺪﻋﺍ ﻡﺎﻤﺗ ﻉﻮﻤﺠﻣ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduceRight(myFunction);
  
function myFunction(total, value, index, array) {
  
  return total + value;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The reduceRight() Method</h2>

<p>Find the sum of all numbers in an array:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduceRight(myFunction);

document.getElementById("demo").innerHTML = "The sum is " + sum;

function myFunction(total, value, index, array) {
  return total + value;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 4 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • (ﯽﻠﺒﻗ ﯽﺘﺸﮔﺮﺑ ﺭﺍﺪﻘﻣ/ﻪﯿﻟﻭﺍ ﺭﺍﺪﻘﻣ) ﻞﮐ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﻪﺷﺎﺑ ﻪﻧﻮﺘﯿﻣ .ﺪﻨﮐ ﯽﻤﻧ ﻩﺩﺎﻔﺘﺳﺍ ﻪﯾﺍﺭﺁ ﻭ ﺺﺧﺎﺷ ﯼﺎﻫﺮﺘﻣﺍﺭﺎﭘ ﺯﺍ ﻻﺎﺑ ﻝﺎﺜﻣ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduceRight(myFunction);
  
function myFunction(total, value) {
  return total + value;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The reduceRight() Method</h2>

<p>Find the sum of all numbers in an array:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let sum = numbers.reduceRight(myFunction);

document.getElementById("demo").innerHTML = "The sum is " + sum;

function myFunction(total, value) {
  return total + value;
}
</script>

</body>
</html>

every() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺮﯿﺧ ﺎﯾ ﺪﻨﻨﮐﯽﻣ ﺭﻮﺒﻋ ﻥﻮﻣﺯﺁ ﺯﺍ ﻪﯾﺍﺭﺁ ﺮﯾﺩﺎﻘﻣ ﻪﻤﻫ ﺎﯾﺁ ﻪﮐ ﺪﻨﮐﯽﻣ ﯽﺳﺭﺮﺑ every() ﺵ

:ﺪﻨﺘﺴﻫ 18 ﺯﺍ ﺮﺘﮔﺭﺰﺑ ﻪﯾﺍﺭﺁ ﺮﯾﺩﺎﻘﻣ ﻪﻤﻫ ﺎﯾﺁ ﻪﮐ ﺪﻨﮐ ﯽﻣ ﯽﺳﺭﺮﺑ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let allOver18 = 
  numbers.every(myFunction);
function myFunction(value, index, array) {
    return 
  value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The every() Method</h2>

<p>The every() method checks if all array values pass a test.</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let allOver18 = numbers.every(myFunction);

document.getElementById("demo").innerHTML = "All over 18 is " + allOver18;

function myFunction(value, index, array) {
  return value > 18;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﺪﻨﮐ ﯽﻣ ﻩﺩﺎﻔﺘﺳﺍ ﺮﮕﯾﺩ ﺮﺘﻣﺍﺭﺎﭘ ﺯﺍ ،(ﺭﺍﺪﻘﻣ) ﻝﻭﺍ ﺮﺘﻣﺍﺭﺎﭘ ﺯﺍ ﺎﻬﻨﺗ ﺱﺎﻤﺗ ﻪﺑ ﺦﺳﺎﭘ ﻊﺑﺎﺗ ﮏﯾ ﻪﮐ ﯽﻣﺎﮕﻨﻫ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let allOver18 = 
  numbers.every(myFunction);
function myFunction(value) {
  return 
  value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The every() Method</h2>

<p>The every() method checks if all array values pass a test.</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let allOver18 = numbers.every(myFunction);

document.getElementById("demo").innerHTML = "All over 18 is " + allOver18;

function myFunction(value) {
  return value > 18;
}
</script>

</body>
</html>

some() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺮﯿﺧ ﺎﯾ ﺪﻨﻨﮐﯽﻣ ﺭﻮﺒﻋ ﻥﻮﻣﺯﺁ ﺯﺍ ﻪﯾﺍﺭﺁ ﺮﯾﺩﺎﻘﻣ ﺯﺍ ﯽﺧﺮﺑ ﺎﯾﺁ ﻪﮐ ﺪﻨﮐﯽﻣ ﯽﺳﺭﺮﺑ some()

:ﺪﻨﺘﺴﻫ 18 ﺯﺍ ﺮﺘﮔﺭﺰﺑ ﻪﯾﺍﺭﺁ ﺮﯾﺩﺎﻘﻣ ﺯﺍ ﯽﺧﺮﺑ ﺎﯾﺁ ﻪﮐ ﺪﻨﮐ ﯽﻣ ﯽﺳﺭﺮﺑ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [45, 4, 9, 16, 25];
let someOver18 = numbers.some(myFunction);
function myFunction(value, index, array) {
    return 
  value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The some() Method</h2>

<p>The some() method checks if some array values pass a test:</p>

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

<script>
const numbers = [45, 4, 9, 16, 25];
let someOver18 = numbers.some(myFunction);

document.getElementById("demo").innerHTML = "Some over 18 is " + someOver18;

function myFunction(value, index, array) {
  return value > 18;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ


indexOf() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺪﻧﺍﺩﺮﮔ ﯽﻣﺮﺑ ﺍﺭ ﻥﺁ ﺖﯿﻌﻗﻮﻣ ﻭ ﺪﻨﮐ ﯽﻣ ﻮﺠﺘﺴﺟ ﺮﺼﻨﻋ ﺭﺍﺪﻘﻣ ﮏﯾ ﯼﺍﺮﺑ ﺍﺭ ﻪﯾﺍﺭﺁ ﮏﯾ indexOf() ﺵﻭ

ﻪﺟﻮﺗ: ﺖﺳﺍ ﻩﺮﯿﻏ ﻭ 1 ﺖﯿﻌﻗﻮﻣ ﯼﺍﺭﺍﺩ ﻡﻭﺩ ﺩﺭﻮﻣ ،0 ﺖﯿﻌﻗﻮﻣ ﯼﺍﺭﺍﺩ ﻝﻭﺍ ﺩﺭﻮﻣ.

ﻝﺎﺜﻣ

:ﺪﯿﻨﮐ ﻮﺠﺘﺴﺟ "Apple" ﺩﺭﻮﻣ ﯼﺍﺮﺑ ﻪﯾﺍﺭﺁ ﮏﯾ

const fruits = ["Apple", "Orange", "Apple", "Mango"];
let position = fruits.indexOf("Apple") + 1;

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The indexOf() Method</h2>

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

<script>
const fruits = ["Apple", "Orange", "Apple", "Mango"];
let position = fruits.indexOf("Apple") + 1;

document.getElementById("demo").innerHTML = "Apple is found in position " + position;
</script>

</body>
</html>

ﻮﺤﻧ

array.indexOf(item, start)
item

ﺩﻮﺷ ﻮﺠﺘﺴﺟ ﺪﯾﺎﺑ ﻪﮐ ﯼﺩﺭﻮﻣ .ﯼﺭﻭﺮﺿ

start

.ﺪﻨﻨﮐ ﯽﻣ ﻮﺠﺘﺴﺟ ﺎﻬﺘﻧﺍ ﺎﺗ ﻭ ﺪﻨﻨﮐ ﯽﻣ ﺵﺭﺎﻤﺷ ﺎﻬﺘﻧﺍ ﺯﺍ ﻭ ﺪﻧﻮﺷ ﯽﻣ ﻉﻭﺮﺷ ﻩﺪﺷ ﻩﺩﺍﺩ ﺖﯿﻌﻗﻮﻣ ﺭﺩ ﯽﻔﻨﻣ ﺮﯾﺩﺎﻘﻣ ﻢﯿﻨﮐ ﻉﻭﺮﺷ ﺎﺠﮐ ﺯﺍ ﺍﺭ ﻮﺠ

Array.indexOf() ﯽﻣﺮﺑ ﺍﺭ 1- ﺪﺸﻧ ﺍﺪﯿﭘ ﺩﺭﻮﻣ ﺮﮔﺍﺪﻧﺍﺩﺮﮔ.

ﺪﻧﺍﺩﺮﮔﯽﻣﺮﺑ ﺍﺭ ﻝﻭﺍ ﺩﺭﻮﻣ ﺖﯿﻌﻗﻮﻣ ،ﺪﺷﺎﺑ ﻪﺘﺷﺍﺩ ﺩﻮﺟﻭ ﺭﺎﺑ ﮏﯾ ﺯﺍ ﺶﯿﺑ ﺩﺭﻮﻣ ﺮﮔﺍ


lastIndexOf() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

Array.lastIndexOf() ﻥﺎﻤﻫ Array.indexOf() ﺎﻣﺍ ،ﺖﺳﺍ

ﻝﺎﺜﻣ

:ﺪﯿﻨﮐ ﻮﺠﺘﺴﺟ "Apple" ﺩﺭﻮﻣ ﯼﺍﺮﺑ ﻪﯾﺍﺭﺁ ﮏﯾ

const fruits = ["Apple", "Orange", "Apple", "Mango"];
let position = fruits.lastIndexOf("Apple") + 1;

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The lastIndexOf() Method</h2>

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

<script>
const fruits = ["Apple", "Orange", "Apple", "Mango"];
let position = fruits.lastIndexOf("Apple") + 1;

document.getElementById("demo").innerHTML = "Apple is found in position " + position;
</script>

</body>
</html>

ﻮﺤﻧ

array.lastIndexOf(item, start)
item

ﺩﻮﺷ ﻮﺠﺘﺴﺟ ﺪﯾﺎﺑ ﻪﮐ ﯼﺩﺭﻮﻣ .ﯼﺭﻭﺮﺿ

start

ﺪﻨﻨﮐ ﯽﻣ ﻮﺠﺘﺴﺟ ﺍﺪﺘﺑﺍ ﺎﺗ ﻭ ﺪﻨﻨﮐ ﯽﻣ ﺵﺭﺎﻤﺷ ﺎﻬﺘﻧﺍ ﺯﺍ ﻭ ﺪﻧﻮﺷ ﯽﻣ ﻉﻭﺮﺷ ﻩﺪﺷ ﻩﺩﺍﺩ ﺖﯿﻌﻗﻮﻣ ﺭﺩ ﯽﻔﻨﻣ ﺮﯾﺩﺎﻘﻣ ﻢﯿﻨﮐ ﻉﻭﺮﺷ ﺎﺠﮐ ﺯﺍ ﺍﺭ ﻮﺠﺘ


find() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺪﻧﺍﺩﺮﮔ ﯽﻣﺮﺑ ﺍﺭ ﯼﺍ ﻪﯾﺍﺭﺁ ﺮﺼﻨﻋ ﻦﯿﻟﻭﺍ ﺭﺍﺪﻘﻣ find() ﺪﺘﻣ

.(ﺪﻧﺍﺩﺮﮔ ﯽﻣﺮﺑ ﺍﺭ ﻥﺁ ﺭﺍﺪﻘﻣ) ﺪﻨﮐ ﯽﻣ ﺍﺪﯿﭘ ﺍﺭ ﺮﺘﮔﺭﺰﺑ ﺮﺼﻨﻋ ﻦﯿﻟﻭﺍ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [4, 9, 16, 25, 29];
let first = 
  numbers.find(myFunction);
function myFunction(value, index, array) {
  return 
  value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The find() Method</h2>

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

<script>
const numbers = [4, 9, 16, 25, 29];
let first = numbers.find(myFunction);

document.getElementById("demo").innerHTML = "First number over 18 is " + first;

function myFunction(value, index, array) {
  return value > 18;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

find() ﯽﮔﮋﯾﻭ ﮏﯾ ES6 (2015 ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ) ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

find() ﺩﻮﺷ ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩ.


findIndex() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺪﻧﺍﺩﺮﮔ ﯽﻣﺮﺑ ﺍﺭ ﻪﯾﺍﺭﺁ ﺮﺼﻨﻋ ﻦﯿﻟﻭﺍ ﺲﮐﺪﻨﯾﺍ findIndex() ﺵﻭﺭ

:ﺪﻨﮐ ﯽﻣ ﺍﺪﯿﭘ ﺖﺳﺍ 18 ﺯﺍ ﺮﺘﮔﺭﺰﺑ ﻪﮐ ﺍﺭ ﺮﺼﻨﻋ ﻦﯿﻟﻭﺍ ﺺﺧﺎﺷ ﻝﺎﺜﻣ ﻦﯾﺍ

ﻝﺎﺜﻣ

const numbers = [4, 9, 16, 25, 29];
let first = 
  numbers.findIndex(myFunction);
function myFunction(value, index, array) {
    return 
  value > 18;
} 

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The findIndex() Method</h2>

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

<script>
const numbers = [4, 9, 16, 25, 29];

document.getElementById("demo").innerHTML = "First number over 18 has index " + numbers.findIndex(myFunction);

function myFunction(value, index, array) {
  return value > 18;
}
</script>

</body>
</html>

:ﺩﺮﯿﮔ ﯽﻣ ﻥﺎﻣﻮﮔﺭﺁ 3 ﻊﺑﺎﺗ ﻪﮐ ﺪﯿﺷﺎﺑ ﻪﺘﺷﺍﺩ ﻪﺟﻮﺗ

  • ﺩﺭﻮﻣ ﺵﺯﺭﺍ

  • ﻢﺘﯾﺁ ﺺﺧﺎﺷ

  • ﻪﯾﺍﺭﺁ ﺩﻮﺧ

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

findIndex() ﯽﮔﮋﯾﻭ ﮏﯾ ES6 (2015 ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ) ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

findIndex() ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩﺩﻮﺷ.


Array.from() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ

.ﺪﻧﺍﺩﺮﮔ ﯽﻣﺮﺑ ﻝﻮﻃ ﺎﺑ ﯽﺷ ﺮﻫ ﺯﺍ ﺍﺭ ﻪﯾﺍﺭﺁ ﯽﺷ ﮏﯾ Array.from() ﺪﺘﻣ

ﻝﺎﺜﻣ

:ﻪﺘﺷﺭ ﮏﯾ ﺯﺍ ﻪﯾﺍﺭﺁ ﮏﯾ ﺩﺎﺠﯾﺍ

Array.from("ABCDEFG");

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The from() Method</h2>

<p>Return an array object from any object with a length property or any iterable object.</p>

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

<script>
const myArr = Array.from("ABCDEFG");
document.getElementById("demo").innerHTML = myArr;
</script>

<p>The Array.from() method is not supported in Internet Explorer.</p>

</body>
</html>

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

from() ﯽﮔﮋﯾﻭ ﮏﯾ ES6 (2015 ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ) ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

from() ﺩﻮﺷ ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩ.


Keys() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

.ﺪﻧﺍﺩﺮﮔ ﯽﻣﺮﺑ ﻪﯾﺍﺭﺁ ﮏﯾ ﯼﺎﻫﺪﯿﻠﮐ ﺎﺑ ﺍﺭ Array Iterator ﯽﺷ ﮏﯾ Array.keys() ﺵﻭﺭ

ﻝﺎﺜﻣ

:ﺖﺳﺍ ﻪﯾﺍﺭﺁ ﯼﺎﻫﺪﯿﻠﮐ ﯼﻭﺎﺣ ﻪﮐ ﺪﯿﻨﮐ ﺩﺎﺠﯾﺍ Array Iterator ﯽﺷ ﮏﯾ

const fruits = ["Banana", "Orange", "Apple", "Mango"];
const keys = fruits.keys();

for (let x of keys) {
  text += x + "<br>";
}

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The keys() Method</h2>

<p>Return an Array Iterator object with the keys of the array:</p>

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

<script>
const fruits = ["Banana", "Orange", "Apple", "Mango"];
const keys = fruits.keys();

let text = "";
for (let x of keys) {
  text += x + "<br>";
}

document.getElementById("demo").innerHTML = text;
</script>

<p>Array.keys() is not supported in Internet Explorer.</p>

</body>
</html>

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

keys() ﯽﮔﮋﯾﻭ ﮏﯾ ES6 (2015 ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ) ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

keys() ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩﺩﻮﺷ.


entries() ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

ﻝﺎﺜﻣ

:ﺪﯿﻨﮐ ﺭﺍﺮﮑﺗ ﺭﺍﺪﻘﻣ/ﺪﯿﻠﮐ ﯼﺎﻫ ﺖﻔﺟ ﯼﻭﺭ ﺲﭙﺳ ﻭ ﺪﯿﻨﮐ ﺩﺎﺠﯾﺍ Array Iterator ﮏﯾ

const fruits = ["Banana", "Orange", "Apple", "Mango"];
const f = fruits.entries();
for (let x of f) {
  document.getElementById("demo").innerHTML += x;
}

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript Arrays</h1>
<h2>The entries() method</h2>

<p>entries() returns an Array Iterator object with key/value pairs:</p>

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

<script>
const fruits = ["Banana", "Orange", "Apple", "Mango"];
const f = fruits.entries();

for (let x of f) {
  document.getElementById("demo").innerHTML += x + "<br>";
}
</script>

<p>The entries() method is not supported in Internet Explorer 11 (or earlier).</p>

</body>
</html>

:ﺪﻧﺍﺩﺮﮔﯽﻣﺮﺑ ﺭﺍﺪﻘﻣ/ﺪﯿﻠﮐ ﯼﺎﻫﺖﻔﺟ ﺎﺑ ﺍﺭ Array Iterator ءﯽﺷ ﮏﯾ entries() ﺪﺘﻣ

["ﻪﺒﻧﺍ" ،3]
["ﺐﯿﺳ" ،2]
["ﯽﺠﻧﺭﺎﻧ" ،1]
["ﺯﻮﻣ" ،0]

.ﺪﻫﺩ ﯽﻤﻧ ﺮﯿﯿﻐﺗ ﺍﺭ ﯽﻠﺻﺍ ﻪﯾﺍﺭﺁ entries() ﺵﻭﺭ

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

entries() ﯽﮔﮋﯾﻭ ﮏﯾ ES6 (2015 ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ) ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

entries() ﺩﻮﺷ ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩ.


ﺖﺳﺍ ()ﻞﻣﺎﺷ ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ

ECMAScript 2016 Array.includes() ﺩﺮﮐ ﯽﻓﺮﻌﻣ ﺎﻫ ﻪﯾﺍﺭﺁ ﻪﺑ ﺍﺭ.

ﻝﺎﺜﻣ

const fruits = ["Banana", "Orange", "Apple", "Mango"];

fruits.includes("Mango"); // is true

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Arrays</h1>
<h2>The includes() Method</h2>

<p>Check if the fruit array contains "Mango":</p>

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

<p><strong>Note:</strong> The includes method is not supported in Edge 13 (and earlier versions).</p>

<script>
const fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo").innerHTML = fruits.includes("Mango");
</script>

</body>
</html>

ﻮﺤﻧ

array.includes(search-item)

Array.includes() ﺮﯾﺩﺎﻘﻣ ﺎﺗ ﺪﻫﺩ ﯽﻣ ﻩﺯﺎﺟﺍ NaN ﻑﻼﺧﺮﺑ .ﺪﯿﻨﮐ ﯽﺳﺭﺮﺑ ﺍﺭ Array.indexOf().

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

includes() ﯽﮔﮋﯾﻭ ﮏﯾ ECMAScript 2016 ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

includes() ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩﺩﻮﺷ.


(...) ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ ﺵﺮﺘﺴﮔ

:ﺪﻫﺩ ﯽﻣ ﺵﺮﺘﺴﮔ ﯼﺮﺘﺸﯿﺑ ﺮﺻﺎﻨﻋ ﻪﺑ ﺍﺭ (ﻪﯾﺍﺭﺁ ﮏﯾ ﺪﻨﻧﺎﻣ) ﺮﯾﺬﭘ ﺭﺍﺮﮑﺗ ﮏﯾ ... ﺮﮕﻠﻤﻋ

ﻝﺎﺜﻣ

const q1 = ["Jan", "Feb", "Mar"];
const q2 = ["Apr", "May", "Jun"];
const q3 = ["Jul", "Aug", "Sep"];
const q4 = ["Oct", "Nov", "May"];

const year = [...q1, ...q2, ...q3, ...q4];

→ ﺪﯿﻨﮐ ﻥﺎﺤﺘﻣﺍ ﺍﺭ ﻥﺁ ﻥﺎﺗﺩﻮﺧ

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript Operators</h1>
<h2>The ... Operator</h2>

<p>The "spread" operator spreads elements of iterable objects:</p>

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

<script>
const q1 = ["Jan", "Feb", "Mar"];
const q2 = ["Apr", "May", "Jun"];
const q3 = ["Jul", "Aug", "Sep"];
const q4 = ["Oct", "Nov", "May"];

const year = [...q1, ...q2, ...q3, ...q4];
document.getElementById("demo").innerHTML = year; 
</script>

</body>
</html>

ﺮﮔﺭﻭﺮﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ

... ﯽﮔﮋﯾﻭ ﮏﯾ ES6 (2015 ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ) ﺖﺳﺍ.

:ﺩﻮﺷ ﯽﻣ ﯽﻧﺎﺒﯿﺘﺸﭘ ﻥﺭﺪﻣ ﯼﺎﻫﺮﮔﺭﻭﺮﻣ ﻡﺎﻤﺗ ﺭﺩ

Chrome Edge Firefox Safari Opera
Yes Yes Yes Yes Yes

... ﺩﻮﺷ ﯽﻤﻧ ﯽﻧﺎﺒﯿﺘﺸﭘ ﺭﺭﻮﻠﭙﺴﮐﺍ ﺖﻧﺮﺘﻨﯾﺍ ﺭﺩ.


ﻪﯾﺍﺭﺁ ﻞﻣﺎﮐ ﻊﺟﺮﻣ

:ﺪﯾﻭﺮﺑ ﺎﻣ ﺱﺭﺩﺁ ﻪﺑ ،ﻪﯾﺍﺭﺁ ﻞﻣﺎﮐ ﻊﺟﺮﻣ ﮏﯾ ﯼﺍﺮﺑ

.ﻞﻣﺎﮐ ﺖﭙﯾﺮﮑﺳﺍ ﺍﻭﺎﺟ ﻪﯾﺍﺭﺁ ﻊﺟﺮﻣ

ﺖﺳﺍ ﺎﻫ ﻪﯾﺍﺭﺁ ﻪﻤﻫ ﺯﺍ ﯽﯾﺎﻫ ﻪﻧﻮﻤﻧ ﻭ ﺕﺎﺤﯿﺿﻮﺗ ﯼﻭﺎﺣ ﻊﺟﺮﻣ

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