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Javascript Array at() Method Example to Get Value of Array Element Using Index Number
Jan 9, 2025
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uh Hello friends welcome to this video
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so in this video we will look at a
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JavaScript array method which is called
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as at
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method
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so a and it's a method here of array so
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it allows you to return
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the array index at a particular location
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so let suppose I have a array here of
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names so I
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have four names right
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here John
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Smith so I have these three names this
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is actually a names array we have three
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names right here this is the first index
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which is drawn the second name is Smith
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third is Henry so three elements are
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present in this array so if you want to
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get let's suppose the second value what
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you will say you will simply say
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names and if you want to X is the first
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element you will
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say here zero because indexing start
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from zero so if you console log it now
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you will see John is printed out this is
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actually the conventional way of getting
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the array value you actually use the
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bracket
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notation uh the array followed by this
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bracket notation and then you provide
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the index number so in zero represents
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this is actual the first element then
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the one two so index indexing start from
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zero this is actual conventional way but
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there is a method which is available
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which actually does the same thing which
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Returns the actual value at that index
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number so the method name is very simple
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which
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is at so you invoke this method on the
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actual array you are working with so we
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are working with this array the names so
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this actually this is actual method at
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and here you it actually expects the
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index number
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you need to provide so by default if you
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don't provide any argument to this
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function it will return the first
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element which which is John here so you
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will see John is printed out the first
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element of the array so now if you want
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to explicitly provide
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the what element you want to return so
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let's suppose I want to return the
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second element so I will simply provide
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here one so the first index number so
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now it will return you this so this is
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zero
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this is one this is two so it will
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return this index here Smith here you
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will see the actual value and now it is
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printed out in the
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console so you can even provide here
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negative number as well if you provide
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negative number it will return you the
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last index which is the last element
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Henry if you see so in this example the
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last element is this
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012 so if you provide here in man
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value it can be anything minus 11 also
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but so apart from minus1 if you provide
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any other negative value let's suppose
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minus 11 undefined will be returned to
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you so if you want to return the last
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element of the array you provide minus
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one so so it automatically Returns the
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last element of the
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array so this is useful in those
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situations if you don't know the length
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of the array so you just provide minus
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one so then it will simply return the
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last element of the array so in this
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way so it's a very simple method which
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returns you the actual value of the
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array at a particular location number
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which is the at method this is actual
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thing it is used for so thank you very
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much for watching this video and do
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check out my website free mediat
3:53
tools.com which is actually a tool-based
3:56
website which contains lots of audio
3:58
video tools
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and I will be seeing you in the next
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video