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Commit 7e24fce

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All Array Methods ✅
1 parent f0df99c commit 7e24fce

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‎7. Array-Methods/15. from().js‎

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// Array From ()
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// Array.from() Method returns a new array from any array likr iterable object
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let names = "Suhail";
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console.log(Array.from(names)); // [ 'S', 'u', 'h', 'a', 'i', 'l' ]
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let num = "12345";
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console.log(Array.from(num, (ele) => ele * ele));
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console.log(num);

‎7. Array-Methods/16. includes().js‎

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// Array Includes
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const arr1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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console.log(arr1.includes(10));
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// Array Includes value in true or false
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// The includes() method returns:
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// true if searchValue is found anywhere within the array
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// false if searchValue is not found anywhere within the array
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// Array Includes check the given element is
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// present in the array or not
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//
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const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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console.log(arr.includes(11)); // false
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console.log(arr.includes(4)); // true
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// 11 is not in the array so it gave false
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// 4 is in the array so it gave true
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// The includes() method is case sensitive. For example:
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const words = ["Java", "Python", "C"];
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console.log(words.includes("c")); // false
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// There is no lowerCase c in the array
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console.log(words.includes("C")); // true
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// There is UpperCase C in the array
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// 2nd Parameter is for to check from a specific index of array
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const test = [0, 1, 2, 3, 4, 5, 6, 7, 8];
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console.log(test.includes(4, 5)); // Checking 4 from 5th index // false
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console.log(test.includes(4, 1)); // Checking 4 from 1st index // true
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‎7. Array-Methods/17. indexof().js‎

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// Indexof Array Method
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// Array Indexof gives the index of the specifc element from
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// the array
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// IF THERE IS NO INDEX OF THAT ELEMENT IF GIVE RETURN -1
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const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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console.log(arr.indexOf(1)); // 0
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console.log(arr.indexOf(2)); // 1
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console.log(arr.indexOf(10)); // 9
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const words = ["Java", "C", "C++", "Python"];
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// Indexs are 0 1 2 3
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console.log(words.indexOf("JavaScript")); // -1
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console.log(words.indexOf("C++")); //2;
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console.log(words.indexOf("Java")); // 0
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console.log(words.at(0));

‎7. Array-Methods/18. isArray().js‎

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// Array is.Array() //
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// Checks the array is a array or not
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// Returns true if the array is true
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// Returns false if the array is false
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const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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console.log(arr);
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console.log(Array.isArray(arr));
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//
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const arr2 = new Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
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console.log(arr2);
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console.log(Array.isArray(arr2));
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console.log(typeof arr2); // Its an Object but shows as Array
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// passing an empty array []
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console.log(Array.isArray([])); // true
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// we have created an array with element 7 and
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// passed that value to isArray()
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console.log(Array.isArray(new Array(7))); // true
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// passing a boolean value
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console.log(Array.isArray(true)); // false
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// passing undefined
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console.log(Array.isArray(undefined)); // false
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// not passing any argument in isArray()
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console.log(Array.isArray()); // false

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