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Build a React.js Autocomplete Combobox Form Input Field With Search & Filtering Items in JSX
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Jan 9, 2025
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0:00
uh hello guys welcome to this video so
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in this video I will show you a
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autocomplete field form field how to
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make that with search and filtering
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options as well in react sh so it's a
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combo box combo box widget autocomplete
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so we have this input field and as the
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user start to type autocomplete options
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will come as soon you will see as I'm
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writing react this auto complete is
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coming I can select this once I select
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this you will see the selected item and
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also we'll show some detailed
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information about this selected item so
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this was actually a very simple
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application you will see as soon as I
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start to write these autocomplete
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options will come in this so I can
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select any of these options as I select
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this we can show a nice little
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panel talking about more about that
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selected item so this we are not using
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any third party package for this we are
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we will be building it from scratch in
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react CH all the source code I've have
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given in the description so now let's
1:07
get started so first of all you need to
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make a functional component and then you
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need to
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declare some State variable so we need
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two variables for that first is the
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search term we need to keep track of
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whichever search item the user write we
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for this we will have a UST State hook
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initial value will be nothing and the
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second item we also need is selected
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item so whatever item the user will
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select we also need to keep track of
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that as well so or for this also we will
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use a UST State hook initial value will
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be null so now we actually declared
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these two variables and after this we
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will declare an aray of items that we
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need to have for the auto complete this
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will be an array of items each object
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will have some certain properties
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ID value and info so for the simple
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example I taking this items we are
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declaring a stating items but this can
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be coming from a database or Json API as
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well for the simple example I am just
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taking the static
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data so we will have these four items
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for the
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autocomplete you can have as many data
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that it it can be coming from a database
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as well so now we have this array of
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items we have declared the this variable
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now coming to the jsx we come to the jsx
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and right here we give it some styling
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to
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it and we give it some padding here 20
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pixel and we give it a Max width
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of 400 pixel and then we give it a
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margin of Auto just to center it and
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after this we will have this autoc
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complete search
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and then we'll be having this input
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field input type
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text and we have a placeholder which
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will be
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search and we binding this value which
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is the search term which we have
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declared the variable in the state and
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also you'll be binding this onchange
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event handler so whenever you change the
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value in inside the input field this
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call back function will execute and here
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we'll be up updating the search term by
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using this hook function so whatever the
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value is written by the user we will
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update the state and also you'll be
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giving some styling to this input field
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we'll be making the WID to 100% padding
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I will say it's around 8
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pixel and then I will also be giving
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some margin from the bottom position
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which will be 10 pixel and the box size
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I will change to border box these are
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the styling and if you just refresh your
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application you will see this input
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field appearing autocomplete but as I
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search it no autocomplete options are
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coming for that options to come we just
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need to add this bottom position we put
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a restriction in this condition that if
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the filtered
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items so for this filtered items we do
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need to declare
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this uh I think
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yeah this filtered items we need to
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declare it so it it will be
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actually a
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simple so whatever search term the user
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rights based upon that we trimmed it
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first of
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all and we will put a tary condition
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that if it's empty then do don't do
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anything but it's if it's not empty then
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we need to f filter out the items based
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upon the autocomplete search so here
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you'll be using the filter method which
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is a built-in method in JavaScript and
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we take the value and convert this to
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lowercase and whatever items which
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includes the
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title we return those items which
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matches the search term in this easy
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way this is actually the filtered items
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which will have so for this based upon
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the search term we first of all trim it
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then we use this tary to condition and
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we filter out the items we convert the
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value to lower case and then use the
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includes function to only include those
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items which matches the Search terms so
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this
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is after doing
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this so here you'll be comparing that if
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the filtered items
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this will be an array so here we'll be
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comparing if the length is greater than
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zero if items are available in that case
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we need to show them and now for showing
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it we'll be using the unordered
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list so I will first of all list stle
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type I will just make it to
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none and I will just give it some
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spacing so padding I will give it to
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zero margin as well zero
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so then again filtered items I will map
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map each item and for
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this use the list
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item and for this I will give it a key
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parameter which will be item. ID and
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whenever you click on any of this
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individual item you will bind this
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inline function and we will be binding
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this custom function handle item and we
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will pass this specific item
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and we also will give some styling
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information to this list items we paste
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The Styling
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information and then we simply bind the
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item value which is item do
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value so now if you
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select we just need to Define
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this handle select function so I will
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just go to it
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if you try to see just write something
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you will see these autocomplete options
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will come as I type here react so
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whenever I click on these items I need
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to show the panel information so for
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doing this first of all whenever you
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click the individual item this function
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will execute hold holding that specific
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item so first of all we will be saying
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set selected item to be that item and
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that set search item to be set search
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term to be
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null that's the two things that you need
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to do and now we come to the GSX part
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and right below that whenever this UL
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tag is ending so we simply say if the
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selected item is defined in that case we
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need to show more information about that
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selected item
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item so inside this H4 we will say
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selected
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item and then we have a simple paragraph
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inside this strong tag we simply display
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the selected
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item dot value
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and then we'll show a little bit of info
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about that selected item
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so if you just
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now click on that you will
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see you can give some stylings as
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styling is not necessary just give it to
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this div
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tag you can see that so it has it you
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can now do it for any item as you type
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this auto complete will occur so for
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this we haven't used any third party
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package we have built it from scratch
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this is actually the autocomplete combo
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box widget you can directly make if you
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have some data you can directly make it
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static data you have you can declare it
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and build out this a awesome
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autocomplete in react Chas thank you
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very much for watching this video I have
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given this source code in the
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description so also go to my website as
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well free mediat tools.com uh which
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contains thousands of tools regarding
10:07
audio video and image and I will be
10:09
seeing you guys in the next video
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