10 examples of 'javascript array push front' in JavaScript

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7function popFront(arr) {
8 var temp = arr[0];
9 for (var x = 0; x < arr.length-1; x++){
10 var swap = arr[x];
11 arr[x] = arr[x+1];
12 arr[x+1] = swap;
13 }
14 arr.pop();
15 return temp;
16}
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104function push (array, value) {
105 array.push(value)
106 return array
107}
331function unshift (self, item) {
332 self.head = new Node(item, null, self.head, self)
333 if (!self.tail) {
334 self.tail = self.head
335 }
336 self.length ++
337}
384function push (self, item) {
385 self.tail = new Node(item, self.tail, null, self)
386 if (!self.head) {
387 self.head = self.tail
388 }
389 self.length++
390}
69get_front() {
70 return this.get_next(this);
71}
235insert(index, element) {
236 dart.as(element, E);
237 this[_checkInsertIndex](index);
238 this.callMethod('splice', [index, 0, element]);
239}
22front() {
23 let q = items.get(this);
24 return q[0];
25}
48get front(): Item {
49 return this._queue[0];
50}
80peekFront(): T {
81 if (this._length) {
82 return this.head.value;
83 }
84 return undefined;
85}
1module.exports = function array_push (inputArr) { // eslint-disable-line camelcase
2 // discuss at: https://locutus.io/php/array_push/
3 // original by: Kevin van Zonneveld (https://kvz.io)
4 // improved by: Brett Zamir (https://brett-zamir.me)
5 // note 1: Note also that IE retains information about property position even
6 // note 1: after being supposedly deleted, so if you delete properties and then
7 // note 1: add back properties with the same keys (including numeric) that had
8 // note 1: been deleted, the order will be as before; thus, this function is not
9 // note 1: really recommended with associative arrays (objects) in IE environments
10 // example 1: array_push(['kevin','van'], 'zonneveld')
11 // returns 1: 3
12
13 var i = 0
14 var pr = ''
15 var argv = arguments
16 var argc = argv.length
17 var allDigits = /^\d$/
18 var size = 0
19 var highestIdx = 0
20 var len = 0
21
22 if (inputArr.hasOwnProperty('length')) {
23 for (i = 1; i < argc; i++) {
24 inputArr[inputArr.length] = argv[i]
25 }
26 return inputArr.length
27 }
28
29 // Associative (object)
30 for (pr in inputArr) {
31 if (inputArr.hasOwnProperty(pr)) {
32 ++len
33 if (pr.search(allDigits) !== -1) {
34 size = parseInt(pr, 10)
35 highestIdx = size > highestIdx ? size : highestIdx
36 }
37 }
38 }
39 for (i = 1; i < argc; i++) {
40 inputArr[++highestIdx] = argv[i]
41 }
42
43 return len + i - 1
44}

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