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Commit c426eec

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author
munnaSorder
committed
add few function
1 parent d1ead93 commit c426eec

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7 files changed

+97
-0
lines changed

7 files changed

+97
-0
lines changed

‎concat.js

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// example 1
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function concatExOne(arr, ...items) {
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for (let i = 0, length = items.length; i < length; i++) {
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if(Array.isArray(items[i])) arr.push(...items[i]);
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else arr.push(items[i]);
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}
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return arr;
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}
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// console.log(concatExOne([1,2,3], 11,22,33,[111,[1111]]));
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// example 2
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function concatExTwo(arr, ...items) {
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return [...arr, ...items.flat()]
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}
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// console.log(concatExTwo([1,2,3], 11,22,33,[111,[1111]]));
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console.dir(Array.prototype)

‎every.js

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const myArray = [1,2,3];
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function every(arr, cb) {
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for (let i = 0; i < arr.length; i++) {
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if (!cb(arr[i], i, arr)) return false;
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}
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return true
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}
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const result = every(myArray, (doc) => doc > 0)
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console.log(result)

‎includes.js

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const myArray = [1,2,3]
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function includes(arr, searchElement, formIndex = 0) {
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for (let i = formIndex; i < arr.length; i++) {
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if (arr[i] === searchElement) return true;
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}
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return false;
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}
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console.log(includes(myArray, 5))

‎index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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</head>
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<body>
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<h1>Programming is to thinking not typing....</h1>
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<script src="./push.js"></script>
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</body>
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</html>

‎lastIndexOf.js

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const myString = 'Hello World';
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function lastIndexOf(arr, str, searchElement = 0) {
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let newString = arr.split(' ');
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const findWord = newString.find(doc => doc === str)
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for (let i = searchElement; i < arr.length; i++){
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if (str.length > 1) {
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if (findWord === str) {
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if (arr[i] === (str.charAt())) return i;
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} else {
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return -1;
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}
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} else {
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if(arr[i] === str) return i;
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}
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}
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return -1;
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}
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console.log(lastIndexOf(myString, 'World'))

‎push.js

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let newArray = [];
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function push(arr, ...items) {
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for (let i = 0; i < items.length; i++) {
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console.log('top', arr.length)
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arr[arr.length] = items[i]
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console.log('down',arr.length)
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}
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return arr.length;
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}
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push(newArray, 1,2,3,4);
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console.log(newArray)

‎some.js

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const myArray = [1,2,3];
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function some(arr, cb) {
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for(let i = 0; i < arr.length; i++) {
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if (cb(arr[i], i, arr)) return true;
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}
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return false;
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}
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console.log(some(myArray, doc => doc > 2))

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