Typescript Splice an Item from an array nested within an array

splice multidimensional array javascript
splice javascript
remove item from array javascript
javascript array
remove element from multidimensional array - javascript
remove nested array javascript
remove column from array javascript
remove first element from array javascript

I have an array of items nested within another array of items. Im trying to remove a specific item within the nested array. I have the code below.

removeFromOldFeatureGroup() {
for( let i= this.featureGroups.length-1; i>=0; i--) {
  if( this.featureGroups[i].featureGroupId == this.oldFeatureGroupId)
    for( let z= this.featureGroups[i].features.length-1; z>=0; z--) {
      if( this.featureGroups[i].features[z].featureId == this.featureId)
        this.transferedFeature = this.featureGroups[i].features[z];
        this.featureGroups[i].features[z].splice(z, 1);
        return;
    }
}
}

When i get to splice, an error is thrown saying splice is not a function. How can this be fixed? Also, this.transferedFeature is the correct one i need to remove.


It should be:

this.featureGroups[i].features.splice(z, 1);

As this.featureGroups[i].features is the array within the array (based on your description).

How to splice an array out of a nested array??? What in the world , Since you are only splicing 1 element, you are getting an array of length one with a single array inside of it. If you only need a single item, just do items[X]. splice() method changes the content of an array, adding new elements while removing old elements. Syntax array.splice(index, howMany, [element1][, , elementN]); Parameter Details. index − Index at which to start changing the array. howMany − An integer indicating the number of old array elements to remove. If howMany is 0, no elements are removed.


I think you are mistaking element at z to be an array, this is the correct code

removeFromOldFeatureGroup() {
    for( let i= this.featureGroups.length-1; i>=0; i--) {
    if( this.featureGroups[i].featureGroupId == this.oldFeatureGroupId)
        for( let z= this.featureGroups[i].features.length-1; z>=0; z--) {
        if( this.featureGroups[i].features[z].featureId == this.featureId)
            this.transferedFeature = this.featureGroups[i].features[z];
            this.featureGroups[i].features.splice(z, 1);
            return;
        }
    }
    }

Is there any way to use splice() with a multidimensional array , If you wanted to remove a specific element of a nested array in a two-dimensional array, then you would write: arr[i].splice(j, 1); // assumes i is  The splice () method works well when looking to INSERT or REMOVE values from a javascript array. If your array is already sorted, the splice () method works well to explicitly position new values exactly where you want in the array. The splice () method also works well when looking to remove values from an array by index.


It's all about use of indexing.

outerArr = [];
inner= [1,121,13];
outerArr.push(inner);
console.log(outerArr);
outerArr[0].splice(0,1)
console.log(outerArr)

The Fastest Way to Remove a Specific Item from an Array in , indexOf and .splice to remove an item from an array. If you need to make a deep copy, due to nested objects or arrays inside of an array, then  let arrDeletedItems = array.splice(start[, deleteCount[, item1[, item2[, ]]]]) Parameters start The index at which to start changing the array. If greater than the length of the array, start will be set to the length of the array. In this case, no element will be deleted but the method will behave as an adding function, adding as many element as item[n*] provided.


Learn JavaScript Multidimensional Array By Examples, This tutorial shows you how to create a JavaScript multidimensional array by using an such as push() and splice() to manipulate elements of a multidimensional array. To iterate a multidimensional array, you use a nested for loop as in the  Typography Save an element of a nested table in a table I have an array of items nested within another array of items. Im trying to remove a specific item within the nested array.


Insert, Remove, Splice and Replace elements with Array.splice(), splice(start_index, number_of_elements_to_remove);. start_index refers to the position in the array where the Insertion or Removal of elements  In typescript, we have a couple of different ways to add elements to an array. We can add elements to the start of the array, end of an array or to the middle of an array. In this post, I will show you different ways to do that with examples. Method 1: Using push : push() is used to append elements to the end of an array.


Array.prototype.flat(), The flat() method creates a new array with all sub-array elements concatenated depth Optional: The depth level specifying how deep a nested array const arr = [1, 2, [3, 4, [5, 6]]]; // to enable deep level flatten use Array.prototype.some() · Array.prototype.sort() · Array.prototype.splice() · Array.prototype. Of course, you can always initialize an array like shown below, but you will not get the advantage of TypeScript's type system. let arr = [1, 3, 'Apple', 'Orange', 'Banana', true, false]; Arrays can contain elements of any data type, numbers, strings, or even objects.