```" } },{"@type": "Question","name": "3. What is the difference between $(document).ready() and $(window).load() in jQuery? ","text": "3. What is the difference between $(document).ready() and $(window).load() in jQuery? ","acceptedAnswer":{ "@type": "Answer","text":"Ans. `$(document).ready()` is fired when the DOM is ready and can be used to execute code as soon as the page's HTML structure has been fully loaded. On the other hand, `$(window).load()` is triggered when the whole page, including all external resources like images and stylesheets, has finished loading." } },{"@type": "Question","name": "4. How can I select elements with a specific class using jQuery? ","text": "4. How can I select elements with a specific class using jQuery? ","acceptedAnswer":{ "@type": "Answer","text":"Ans. You can select elements with a specific class using the class selector in jQuery. The class selector is represented by a dot followed by the class name. Here's an example:```javascript$('.classname')```This will select all elements with the class name 'classname' in the document." } },{"@type": "Question","name": "5. How can I animate an element using jQuery? ","text": "5. How can I animate an element using jQuery? ","acceptedAnswer":{ "@type": "Answer","text":"Ans. You can animate an element using jQuery's `animate()` function. This function allows you to change CSS properties of an element over a specified duration. Here's an example that animates the width of a div element to 500 pixels:```javascript$('div').animate({ width: '500px' }, 1000);```This will animate the width of all div elements to 500 pixels over a duration of 1 second." } }]},{"@context":"http://schema.org", "@type":"Quiz","name" : "Quiz about jQuery Tutorial - 60 - each Video Lecture | Importance of jQuery in Website Development - IT & Software","about": {"@type": "Thing","name": "jQuery Tutorial - 60 - each Video Lecture | Importance of jQuery in Website Development - IT & Software"},"educationalAlignment": {"@type": "AlignmentObject","alignmentType": "educationalSubject","targetName": "IT & Software","targetUrl": "https://edurev.in/v/32530/jQuery-Tutorial-60-each"},"assesses": "Attempt this quiz and test your knowledge" }]
pdf
,
IT & Software Exam > IT & Software Videos > Importance of jQuery in Website Development > jQuery Tutorial - 60 - each
jQuery Tutorial - 60 - each Video Lecture | Importance of jQuery in Website Development - IT & Software
FAQs on jQuery Tutorial - 60 - each Video Lecture - Importance of jQuery in Website Development - IT & Software
| 1. What is jQuery? |  |
Ans. jQuery is a fast, small, and feature-rich JavaScript library. It simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development.
| 2. How can I include jQuery in my web page? | |
Ans. To include jQuery in your web page, you can either download the library and reference it locally or use a Content Delivery Network (CDN) to include it from a remote server. Here's an example of including jQuery from a CDN:
```html
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
```
| 3. What is the difference between $(document).ready() and $(window).load() in jQuery? | |
Ans. `$(document).ready()` is fired when the DOM is ready and can be used to execute code as soon as the page's HTML structure has been fully loaded. On the other hand, `$(window).load()` is triggered when the whole page, including all external resources like images and stylesheets, has finished loading.
| 4. How can I select elements with a specific class using jQuery? | |
Ans. You can select elements with a specific class using the class selector in jQuery. The class selector is represented by a dot followed by the class name. Here's an example:
```javascript
$('.classname')
```
This will select all elements with the class name "classname" in the document.
| 5. How can I animate an element using jQuery? | |
Ans. You can animate an element using jQuery's `animate()` function. This function allows you to change CSS properties of an element over a specified duration. Here's an example that animates the width of a div element to 500 pixels:
```javascript
$('div').animate({ width: '500px' }, 1000);
```
This will animate the width of all div elements to 500 pixels over a duration of 1 second.
Text Transcript from Video
hi this is Alex from PHP academy' doll
with a video tutorial for the new Boston
in this video we're going to take a look
at some basic document traversing or
basic traversing in jQuery and
essentially what we're going to be doing
is passing along which is essentially
what traversing is passing along each
input field on this page and there only
happens to be two at the moment but
essentially what we're going to be doing
is taking the results from each input
field on the page and we're going to be
combining the two now obviously this
isn't really well this doesn't really
have its practical uses if you were to
for example want to combine a name you'd
probably uniquely reference each of
these anyway and then just combine the
values but we're just going to be
looking at the each statement or the
each you know function or whatever you
want to call it in jQuery where we can
pass along each element by a specific
type and we're going to be choosing the
input type with a an input field with
the type text okay so let's go ahead
over to our text editor and we'll start
to write this out so inside index.php
we've obviously got jquery included here
as well as EXT dot j s which is just
going to handle or have all of our
jQuery code in I'm going to go ahead and
create a couple of input fields and then
I'm going to create a div area that's
going to show the combined results so
the first thing we want to do is go
ahead and create two input fields with
the type text which is pretty
straightforward and I'm just going to go
ahead and surround these in paragraph
tags so we can keep them separate from
our div that we're going to put down
here in just a moment let's then go and
create a button as well which is going
to have an event handler assigned to it
and this is just going to be a combined
button so the the type is button
obviously and the value we can just say
combined we need to go ahead and give
this an ID and I'm just going to call it
combined or combined so we can obviously
let's just go and refresh we can type
something in here and here click
combined and then we process the
traversing of these two fields or
many fields as we have on our page and
then just down here we're going to
display them in a div area so I'm going
to go ahead and create a div and we'll
go ahead and give this an ID of combined
that just makes sense so combined and
obviously it's not visible on the page
but obviously whatever we put inside of
here will be a you know be visible and
we're going to be putting the text
inside of here from the combined once we
press combined so quite straightforward
let's go ahead and get rid of this now
let's go ahead overhead 2x tjs which I
mentioned we have included in this page
and let's start writing the jQuery code
so the first thing we want to do is wait
for the document to be ready so we use
document and the ready event handler
inside of this event handler we outline
a function so we've got function our
parentheses and we've got our block here
and I'm just going to pull that down and
anything inside of here is what's going
to be executed when the Dom is loaded
and the document is ready so the first
thing we want to go ahead and do is
actually set up an event handler for our
combined button so we've got this
combined button and we need to use a
selector to select this and we're going
to be selecting it by ID so our name is
combined here so we want to go ahead and
use a hash because we're using an ID
selector and then combine the event
handler it's just going to be click so
once this button is clicked like this we
run the function inside of this event
handler so let's go ahead and outline
that function and just again pull it
down as we did with document and the
ready event handler and we want to go
ahead and first of all just initiate a
variable that called combined text
obviously we need somewhere to store our
combined text before we place it into
our div so I'm just going to save our
combined text and because we're using
dot sorry equals nothing save our
combined underscore text equals nothing
but we have string data here the reason
that we do this is when we use each if
we don't go ahead and create a variable
beforehand the combined text variable
will show
as unset or is not set because we're
going to be just using wig enimies using
the plus equals operator to just combine
the values on you'll see what I mean in
a moment so now is the step of actually
selecting all input type fields with the
type of text so again we use a jQuery
selector and on to the end of this we're
going to use the each statement of the
each function so inside of here we want
to say input is current state that
selected all input fields but in
brackets we want to supply where the
type is equal to text so any input field
with the type of text will now be
selected and what we want to do is we
want to use each on the end of this and
this will actually sort of loop through
each occurrence of this selector on the
page so we've got one here and we've got
one here so inside of each we use a
function once again now we can supply an
additional thing in here we could say
index if we wanted to and what this
would do is if we were for example to
say alert index you'll notice that when
we refresh and click combined you'll see
we've got 0 here which represents this
one here and then we've got one here
which represents this field here so we
can use the index if we want we can
obviously also use I think we can do
index and then value and we can output
index + and we'll just do a space plus
value so we rependa ng on a space here
as a post well apart sorry again with
these index and value and if we look to
go ahead and type say refresh Alex
all right and click combine okay yes so
we don't we don't have this here but I'm
going to show you another way to do it
so we'll just ignore that for now and
we'll go ahead and ignore this for now
we can also get the value by using this
here which refers to the current input
type that's selected so either the one
index 0 or index 1 and then we can use
dot Val on the end sorry dot Val
with a video tutorial for the new Boston
in this video we're going to take a look
at some basic document traversing or
basic traversing in jQuery and
essentially what we're going to be doing
is passing along which is essentially
what traversing is passing along each
input field on this page and there only
happens to be two at the moment but
essentially what we're going to be doing
is taking the results from each input
field on the page and we're going to be
combining the two now obviously this
isn't really well this doesn't really
have its practical uses if you were to
for example want to combine a name you'd
probably uniquely reference each of
these anyway and then just combine the
values but we're just going to be
looking at the each statement or the
each you know function or whatever you
want to call it in jQuery where we can
pass along each element by a specific
type and we're going to be choosing the
input type with a an input field with
the type text okay so let's go ahead
over to our text editor and we'll start
to write this out so inside index.php
we've obviously got jquery included here
as well as EXT dot j s which is just
going to handle or have all of our
jQuery code in I'm going to go ahead and
create a couple of input fields and then
I'm going to create a div area that's
going to show the combined results so
the first thing we want to do is go
ahead and create two input fields with
the type text which is pretty
straightforward and I'm just going to go
ahead and surround these in paragraph
tags so we can keep them separate from
our div that we're going to put down
here in just a moment let's then go and
create a button as well which is going
to have an event handler assigned to it
and this is just going to be a combined
button so the the type is button
obviously and the value we can just say
combined we need to go ahead and give
this an ID and I'm just going to call it
combined or combined so we can obviously
let's just go and refresh we can type
something in here and here click
combined and then we process the
traversing of these two fields or
many fields as we have on our page and
then just down here we're going to
display them in a div area so I'm going
to go ahead and create a div and we'll
go ahead and give this an ID of combined
that just makes sense so combined and
obviously it's not visible on the page
but obviously whatever we put inside of
here will be a you know be visible and
we're going to be putting the text
inside of here from the combined once we
press combined so quite straightforward
let's go ahead and get rid of this now
let's go ahead overhead 2x tjs which I
mentioned we have included in this page
and let's start writing the jQuery code
so the first thing we want to do is wait
for the document to be ready so we use
document and the ready event handler
inside of this event handler we outline
a function so we've got function our
parentheses and we've got our block here
and I'm just going to pull that down and
anything inside of here is what's going
to be executed when the Dom is loaded
and the document is ready so the first
thing we want to go ahead and do is
actually set up an event handler for our
combined button so we've got this
combined button and we need to use a
selector to select this and we're going
to be selecting it by ID so our name is
combined here so we want to go ahead and
use a hash because we're using an ID
selector and then combine the event
handler it's just going to be click so
once this button is clicked like this we
run the function inside of this event
handler so let's go ahead and outline
that function and just again pull it
down as we did with document and the
ready event handler and we want to go
ahead and first of all just initiate a
variable that called combined text
obviously we need somewhere to store our
combined text before we place it into
our div so I'm just going to save our
combined text and because we're using
dot sorry equals nothing save our
combined underscore text equals nothing
but we have string data here the reason
that we do this is when we use each if
we don't go ahead and create a variable
beforehand the combined text variable
will show
as unset or is not set because we're
going to be just using wig enimies using
the plus equals operator to just combine
the values on you'll see what I mean in
a moment so now is the step of actually
selecting all input type fields with the
type of text so again we use a jQuery
selector and on to the end of this we're
going to use the each statement of the
each function so inside of here we want
to say input is current state that
selected all input fields but in
brackets we want to supply where the
type is equal to text so any input field
with the type of text will now be
selected and what we want to do is we
want to use each on the end of this and
this will actually sort of loop through
each occurrence of this selector on the
page so we've got one here and we've got
one here so inside of each we use a
function once again now we can supply an
additional thing in here we could say
index if we wanted to and what this
would do is if we were for example to
say alert index you'll notice that when
we refresh and click combined you'll see
we've got 0 here which represents this
one here and then we've got one here
which represents this field here so we
can use the index if we want we can
obviously also use I think we can do
index and then value and we can output
index + and we'll just do a space plus
value so we rependa ng on a space here
as a post well apart sorry again with
these index and value and if we look to
go ahead and type say refresh Alex
all right and click combine okay yes so
we don't we don't have this here but I'm
going to show you another way to do it
so we'll just ignore that for now and
we'll go ahead and ignore this for now
we can also get the value by using this
here which refers to the current input
type that's selected so either the one
index 0 or index 1 and then we can use
dot Val on the end sorry dot Val
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Oct 24, 2024 Last updated |
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