I'm struggling to remove empty or undefined elements from an array. Here's the code I've tried:
function clean(item) {
for (var i = 0; i < item.length; i++) {
if (item[i] === undefined || item[i] == "") {
item.splice(i, 1);
i--;
}
}
return item;
};
Unfortunately, I haven't been able to achieve the desired result.
Here is a snippet of my array for reference:
filteredArray = arr.filter((element) => { return element.trim() != '' })
Presented here is a snippet that I've crafted previously.
Array.prototype.clear = function() {
for (var i = 0, s = this.length; i < s; i++) { this.pop(); }
return this;
};
Array.prototype.removeAll = function(item) {
var result = [];
for (var i = 0, j = 0, s = this.length; i < s; i++) {
if (this[i] != item) { result[j++] = this[i]; }
}
this.clear();
for (var i = 0, s = result.length; i < s;) { this.push(result[i++]); }
};While it may not be the most sophisticated solution out there, it does get the job done. With this functionality, you have the ability to eliminate specific elements from an array easily. Personally, I find the syntax using 'this' quite appealing as it makes the code look cleaner:
arrayVar.removeAll("");
Compared to something like:
arrayVar = clean(arrayVar);
Regardless, what matters is that this method is effective.
To ensure only non-empty and defined elements are transferred, you can create a temporary array to filter out the unwanted values
function filterArray(elements) {
var tempArray = [];
for (var j = 0; j < elements.length; j++) {
if (elements[j] !== undefined && elements[j] != "") {
tempArray.push(elements[j]);
}
}
return tempArray;
}
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