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How can you change this array:
[["1","one"], ["2","two"], ["3","three"]]
to this?
["1","one"], ["2","two"], ["3","three"]
My apologies for giving an invalid second version. This is what I'm really going for:
I want to add ["0","zero"] to the beginning of [["1","one"], ["2","two"], ["3","three"]], to get:
[["0","zero"], ["1","one"], ["2","two"], ["3","three"]]
I have tried:
["0","zero"] << [["1","one"], ["2","two"], ["3","three"]]
The above approach produces this, which contains a nesting I don't want:
[["0","zero"], [["1","one"], ["2","two"], ["3","three"]]]
368
To remove elements from any sub-arrays of a nested array, use the “pop()” method. The “pop()” method typically deletes the last inner-array from a nested array; however, it also helps in removing elements from inner arrays.
Flattening an array is a process of reducing the dimensionality of an array. In other words, it a process of reducing the number of dimensions of an array to a lower number.
You can remove elements from the end of an array using pop, from the beginning using shift, or from the middle using splice. The JavaScript Array filter method to create a new array with desired items, a more advanced way to remove unwanted elements.
unshift ought to do it for you:
a = [["1","one"], ["2","two"], ["3","three"]]
a.unshift(["0", "zero"])
=> [["0", "zero"], ["1", "one"], ["2", "two"], ["3", "three"]]
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