41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
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---
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title: Iterate Through All an Array's Items Using For Loops
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---
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## Iterate Through All an Array's Items Using For Loops
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## Hint 1
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- A nested ``for`` loop must be used to search through every element in the array.
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```javascript
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for (let i = 0; i < arr.length; i++) {
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````
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## Hint 2
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- Every element of the array must then be compared to the `elem` parameter passed through the `filteredArray()` function.
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```javascript
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if (arr[i].indexOf(elem)==-1){
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```
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## Hint 3
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- If a match is NOT found then `newArr` have that entire subarray added. The `push()` function is very useful here.
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```javascript
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newArr.push(arr[i]);
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```
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- Once that entire subarray is added to `newArr` the loop continue with the next element.
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## Solution:
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```javascript
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function filteredArray(arr, elem) {
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let newArr = [];
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// change code below this line
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for (let i = 0; i < arr.length; i++) {
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if (arr[i].indexOf(elem)==-1){ //Checks every parameter for the element and if is NOT there continues the code
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newArr.push(arr[i]); //Inserts the element of the array in the new filtered array
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};
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};
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// change code above this line
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return newArr;
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};
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// change code here to test different cases:
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console.log(filteredArray([[3, 2, 3], [1, 6, 3], [3, 13, 26], [19, 3, 9]], 3));
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```
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