Simple summary of Splice method and slice method in JS

Slice (start,end):

Parameters:

Start: Index of Start position

End: The index of the end position (but not the element that contains the index position)

For example:

Splice has the function of deleting, inserting, replacing

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1: Removed features

Splice (Index,count)

Parameters:

Index: Indexing of the start position

Count: Number of elements to delete

Return: Returns the Array object that contains the deleted element

For example:

Results:

2: Insert function

Splice (index,0, inserted item)

Parameters

Index: The indexed value of the inserted element

For example:

3: Replace function

Splice (Index,num,value)

Index: the indexed position at which to start

Num: Deletes the number of items (if NUM is 0, which is the Insert function)

Value: Inserted values

Return: Returns the Array object that contains the element that was deleted

Results:

Summarize:

Slice: It's for interception.

Splice: is to do delete insert Replace with

Simple summary of Splice method and slice method in JS