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ZilaStar ICT Nov 16 2021, 19:51:24

Foreach Loop (JS Arrays)

<!DOCTYPE html>
<html>
<head>
<title>JavaScript Code Testing</title>
</head>
<body>
<p id = "demo">forEach Loop</p>
<script>
var cities, text;
cities = ["Yangon", "Mandalay", "Naypyidaw", "Meikhtila"];

text = "<ul>";
cities.forEach(jsFunction);
text+= "</ul>";

function jsFunction(value){
text += "<li>" + value + "</li>";
}

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

</script>
</body>
</html>

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ZilaStar ICT Oct 30 2021, 19:50:56

Creating the Array (JS Arrays)

<!DOCTYPE html>
<html>
<head>
<title>JavaScript Code Testing</title>
</head>
<body>
<p id = "demo1"></p>
<p id = "demo2"></p>
<script>

//good habit in crating array
var a = ["aaa", "bbb", "ccc", "ddd"];
document.getElementById("demo1").innerHTML = a;

//bad habit in creating array
var b = new Array("aaa", "bbb", "ccc", "ddd");
document.getElementById("demo2").innerHTML = b;
</script>
</body>
</html>

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ZilaStar ICT Oct 13 2021, 19:50:22

Array Elements (JS Arrays)

<!DOCTYPE html>
<html>
<head>
<title>JavaScript Code Testing</title>
</head>
<body>
<p id = "demo1"></p>
<p id = "demo2"></p>
<script>

var a = ["aaa", "bbb", "ccc", "ddd"];
a[0] = "eee";
document.getElementById("demo1").innerHTML = a;


var b = new Array("aaa", "bbb", "ccc", "ddd");
document.getElementById("demo2").innerHTML = b[2];
</script>
</body>
</html>

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ZilaStar ICT Sep 29 2021, 19:49:31

Adding Array Element (JS Arrays)

<!DOCTYPE html>
<html>
<head>
<title>JavaScript Code Testing</title>
</head>
<body>
<p id = "demo">forEach Loop</p>
<script>
var cities, text;
cities = ["Yangon", "Mandalay", "Naypyidaw", "Meikhtila"];

text = "<ul>";
cities.forEach(jsFunction);
text+= "</ul>";

function jsFunction(value){
text += "<li>" + value + "</li>";
}

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

</script>
</body>
</html>

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ZilaStar ICT Sep 05 2021, 19:48:42

unshift (JavaScript Array Method)

const tnwNames = ["Moe", "Soe", "Noe", "Mya"];
function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNames.join(", ");
}

function tnwFun2(){
    document.getElementById("demo").innerHTML = "The original array is : " + tnwNames.join(", ");
    let tnwNewvalue = document.getElementById("newname").value;
    tnwNames.unshift(tnwNewvalue);
    document.getElementById("demo1").innerHTML = "The new array is : " + tnwNames.join(", ");
}

To see demo

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ZilaStar ICT Aug 19 2021, 19:47:15

splice (JavaScript Array Method)

const tnwNames = ["Hla", "Mya", "Soe", "Moe", "Noe"];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNames.join(", ");
}

function tnwFun2(){
    document.getElementById("demo").innerHTML = "The original array is : 
" + tnwNames.join(", ");
    let result = tnwNames.splice(2, 2, "Aung", "Kyaw", "Tun");
    document.getElementById("demo1").innerHTML = "The removed elements are : 
" + result.join(", ");
    document.getElementById("demo2").innerHTML = "The new array is : 
" + tnwNames.join(", ");
}

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ZilaStar ICT Jul 24 2021, 19:46:34

sort (JavaScript Array Method)

//1. sort alphabetically
/**
const countries = ["Myanmar", "Singapore", "Malaysia", "USA", "Thailand", "Vietname"];

function tnwFun1(){
    document.getElementById("demo").innerHTML = countries.join("
");
}

function jsSort(){
    let result = countries.sort();
    document.getElementById("demo").innerHTML = result.join("
");
}

function jsReverse(){
    let result = countries.reverse();
    document.getElementById("demo").innerHTML = result.join("
");
}

//2. Sort randomly

const tnwNums = [20, 17, 30, 38, 40, 50, 28, 12];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNums.join("
");
}

function tnwFun2(){
    let result = tnwNums.sort(tnwFun3);
    document.getElementById("demo").innerHTML = result.join("
");
}

function tnwFun3(a, b){
    return 0.5 - Math.random();
} */

// 3. Sort Numerically

const tnwNums = [20, 17, 30, 38, 40, 50, 28, 12, 4];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNums.join("
");
}

function jsSort(){
    let result = tnwNums.sort(function(a, b){return a - b;});
    document.getElementById("demo").innerHTML = result.join("
");
}

function jsReverse(){
    let result = tnwNums.sort(function(a, b){return b - a;});
    document.getElementById("demo").innerHTML = result.join("
");
}

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ZilaStar ICT Jul 03 2021, 19:46:00

some (JavaScript Array Method)

const tnwNums = [20, 39, 48, 58, 68, 70, 85, 90];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNums.join(", ");
}

function tnwFun2(){
    let result = tnwNums.some(tnwFun3);
    document.getElementById("demo").innerHTML = tnwNums.join(", ");
    document.getElementById("demo1").innerHTML = result;
}

function tnwFun3(num){
    let chkInput = document.getElementById("chknum").value;
    return num > chkInput;
}

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ZilaStar ICT Jun 13 2021, 19:45:18

slice (JavaScript Array Method)

const tnwNums = [20, 29, 30, 39, 40, 47, 50, 70];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNums.join(", ");
}

function tnwFun2(){
    let result = tnwNums.slice(1, 4);
    document.getElementById("demo").innerHTML = "The original is: " + tnwNums.join(", ");
    document.getElementById("demo1").innerHTML = "The new array is: " + result.join(", ");
}

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ZilaStar ICT May 29 2021, 19:44:28

shift (JavaScript Array Method)

const tnwNums = [20, 30, 40, 50, 60, 70, 90];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNums.join(", ");
}

function tnwFun2(){
    let result = tnwNums.shift();
    document.getElementById("demo").innerHTML = tnwNums.join(", ");
    document.getElementById("demo1").innerHTML = "The removed element is: " + result;
}

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ZilaStar ICT May 07 2021, 15:50:24

reverse (JavaScript Array Method)

const tnwNums = [20, 30, 40, 50, 60, 70];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNums.join("
");
}

function tnwFun2(){
    let result = tnwNums.reverse();
    document.getElementById("demo").innerHTML = result.join("
");
}

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ZilaStar ICT Apr 12 2021, 15:49:51

reduceRight (JavaScript Array Method)

const tnwNum = [20, 9, 20, 8, 100];

function tnwFun1(){
    document.getElementById("demo").innerHTML = tnwNum.join(", ");
}

function tnwFun2(){
    var result = tnwNum.reduceRight(tnwFun3);
    document.getElementById("demo").innerHTML = result;
}

function tnwFun3(numRight, sum){
    return numRight - sum;
}

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