Add Array_Methods.js with examples of array manipulation methods in JavaScript

codeswithpankaj · codeswithpankaj · commit a0a0b28251dc · 2025-04-12T08:38:08.000Z
diff --git a/Example/Array/Array_Methods.js b/Example/Array/Array_Methods.js
@@ -0,0 +1,72 @@
+// array method in js
+
+data = [11,22,33,44,55,66]
+
+// 1. forEach
+data.forEach((value, data) => {
+    console.log(value, data)
+})
+
+// array methods
+
+// 2. map
+// create a new array
+
+data = [11,22,33,44,55,66]
+
+data.map((value, data) => {
+    console.log(value, data)
+})
+
+
+// Array methods 
+
+// 1 length
+
+data = [11,22,33,44,55,66]
+console.log(data.length)
+
+// 2. push
+data.push(77)
+console.log(data)
+
+// 3. pop
+data.pop()
+console.log(data)
+
+// 4. unshift
+data.unshift(0)
+console.log(data)
+
+// 5. shift
+data.shift()
+console.log(data)
+
+// 6. concate
+data1 = [11,22,33]
+data2 = [44,55,66]
+data3 = data1.concat(data2)
+console.log(data3)
+
+// 7 delete
+data = [11,22,33,44,55,66]
+delete data[2]
+console.log(data)
+
+// 8 sort
+data = [11,22,33,10,55,66]
+data.sort()
+console.log(data)
+
+// 9 reverse
+data = [11,22,33,10,55,66]
+data.reverse()
+console.log(data)
+
+// filter
+data = [11,22,33,10,55,66]
+data.filter((value) => {
+    return value > 20
+}).forEach((value, data) => {
+    console.log(value, data)
+})
diff --git a/Example/Numbers/numbers.js b/Example/Numbers/numbers.js
@@ -0,0 +1,57 @@
+// number in JS 
+
+// random number
+let randomNumber = Math.random();
+console.log(randomNumber); // 0.123456789
+
+// random number between 0 and 100
+let randomNumberBetween0and100 = Math.floor(Math.random() * 100);
+console.log(randomNumberBetween0and100); // 45
+
+// square root
+let squareRoot = Math.sqrt(16);
+console.log(squareRoot); // 4
+
+// absolute value
+let absoluteValue = Math.abs(-10);
+console.log(absoluteValue); // 10
+
+// round
+let roundNumber = Math.round(4.5);
+console.log(roundNumber); // 5
+
+// round up
+let roundUp = Math.ceil(4.2);
+console.log(roundUp); // 5
+
+// round down
+let roundDown = Math.floor(4.8);
+console.log(roundDown); // 4
+
+// max
+let maxNumber = Math.max(1, 2, 3, 4, 5);
+console.log(maxNumber); // 5
+
+// min
+let minNumber = Math.min(1, 2, 3, 4, 5);
+console.log(minNumber); // 1
+
+// power
+let power = Math.pow(2, 3);
+console.log(power); // 8
+
+// pi
+let pi = Math.PI;
+console.log(pi); // 3.141592653589793
+
+// e
+let e = Math.E;
+console.log(e); // 2.718281828459045
+
+// log
+let log = Math.log(10);
+
+// log base 10
+let logBase10 = Math.log10(100);
+console.log(logBase10); // 2
+
