How can I make javascript apply to list of elements?

up vote
1
down vote

favorite

I want to flip cards in the browser. The elements are rendered with a Django template for loop. I'm able to flip the first card, but not the rest. I want them to flip individually.

Here's html:

   {% for element in elements %}

    <div class="outer">

        <div class="inner">



          <div class="card-back">

            <span>{{ content }}</span>

          </div>



          <div class="card-front">

            <span>{{ content }}</span>

          </div>



        </div>

      </div>

    {% endear %}

Here's javascript:

# works for the first element

var card = document.querySelector('.inner');

card.addEventListener( 'click', function() {

  card.classList.toggle('is-flipped');

});



# this function seems to break things

function() {

  var cards = document.querySelectorAll(".inner");

  for ( var i  = 0, len = cards.length; i < len; i++ ) {

    var card = cards[i];

    clickListener(card);

  }

});

asked Nov 10 at 21:17

Whodini

31612

1

What does clickListener() do and what errors are thrown in browser console? Those error messages are important clues. Note that function () { }) is invalid syntax and would not ever get called
– charlietfl
Nov 10 at 21:20

add a comment |

up vote
1
down vote

favorite

I want to flip cards in the browser. The elements are rendered with a Django template for loop. I'm able to flip the first card, but not the rest. I want them to flip individually.

Here's html:

   {% for element in elements %}

    <div class="outer">

        <div class="inner">



          <div class="card-back">

            <span>{{ content }}</span>

          </div>



          <div class="card-front">

            <span>{{ content }}</span>

          </div>



        </div>

      </div>

    {% endear %}

Here's javascript:

# works for the first element

var card = document.querySelector('.inner');

card.addEventListener( 'click', function() {

  card.classList.toggle('is-flipped');

});



# this function seems to break things

function() {

  var cards = document.querySelectorAll(".inner");

  for ( var i  = 0, len = cards.length; i < len; i++ ) {

    var card = cards[i];

    clickListener(card);

  }

});

asked Nov 10 at 21:17

Whodini

31612

1

What does clickListener() do and what errors are thrown in browser console? Those error messages are important clues. Note that function () { }) is invalid syntax and would not ever get called
– charlietfl
Nov 10 at 21:20

add a comment |

up vote
1
down vote

favorite

I want to flip cards in the browser. The elements are rendered with a Django template for loop. I'm able to flip the first card, but not the rest. I want them to flip individually.

Here's html:

   {% for element in elements %}

    <div class="outer">

        <div class="inner">



          <div class="card-back">

            <span>{{ content }}</span>

          </div>



          <div class="card-front">

            <span>{{ content }}</span>

          </div>



        </div>

      </div>

    {% endear %}

Here's javascript:

# works for the first element

var card = document.querySelector('.inner');

card.addEventListener( 'click', function() {

  card.classList.toggle('is-flipped');

});



# this function seems to break things

function() {

  var cards = document.querySelectorAll(".inner");

  for ( var i  = 0, len = cards.length; i < len; i++ ) {

    var card = cards[i];

    clickListener(card);

  }

});

asked Nov 10 at 21:17

Whodini

31612

I want to flip cards in the browser. The elements are rendered with a Django template for loop. I'm able to flip the first card, but not the rest. I want them to flip individually.

Here's html:

   {% for element in elements %}

    <div class="outer">

        <div class="inner">



          <div class="card-back">

            <span>{{ content }}</span>

          </div>



          <div class="card-front">

            <span>{{ content }}</span>

          </div>



        </div>

      </div>

    {% endear %}

Here's javascript:

# works for the first element

var card = document.querySelector('.inner');

card.addEventListener( 'click', function() {

  card.classList.toggle('is-flipped');

});



# this function seems to break things

function() {

  var cards = document.querySelectorAll(".inner");

  for ( var i  = 0, len = cards.length; i < len; i++ ) {

    var card = cards[i];

    clickListener(card);

  }

});

javascript html django

asked Nov 10 at 21:17

Whodini

31612

asked Nov 10 at 21:17

Whodini

31612

asked Nov 10 at 21:17

Whodini

31612

asked Nov 10 at 21:17

Whodini

31612

asked Nov 10 at 21:17

Whodini

31612

1

What does clickListener() do and what errors are thrown in browser console? Those error messages are important clues. Note that function () { }) is invalid syntax and would not ever get called
– charlietfl
Nov 10 at 21:20

add a comment |

1

What does clickListener() do and what errors are thrown in browser console? Those error messages are important clues. Note that function () { }) is invalid syntax and would not ever get called
– charlietfl
Nov 10 at 21:20

What does clickListener() do and what errors are thrown in browser console? Those error messages are important clues. Note that function () { }) is invalid syntax and would not ever get called
– charlietfl
Nov 10 at 21:20

add a comment |

1 Answer
1

active

oldest

votes

up vote
1
down vote

accepted

According to Mozilla documentation, document.querySelector returns an Element object representing the first element in the document that matches the specified set of CSS selectors, or null is returned if there are no matches.

This is why it works only for the first element.

If you want to apply this on all elements, you can use jQuery and register the event when the page is fully loaded.

<head>



    <script src="https://code.jquery.com/jquery-3.3.1.js">



    <script>



        $(document).ready(function()

        {

            $(".inner").click(function(event)

            {

                var card = event.target;

                card.classList.toggle('is-flipped');

            });

        });



    </script>



</head>

Please know that you don't need the function with the foor loop, as jQuery will automatically apply the click event whenever a new element is added.

edited Nov 10 at 22:04

answered Nov 10 at 21:44

Amine Messaoudi

450314

1

Thanks for answering Amine. I'm tinkering with it now...
– Whodini
Nov 10 at 22:02

I have updated my answer
– Amine Messaoudi
Nov 10 at 22:04

Still not working. I think your code works all except the event.target part. Doesn't seem to be calling anything. When I replace that with var card = document.querySelector('.inner'); clicking any card will flip the first one. So it's close...
– Whodini
Nov 10 at 22:16

When you run my code, is there any warnings/errors in console ? Because I tested it in my computet and its working fine
– Amine Messaoudi
Nov 10 at 22:19

Ah ok I got it. Instead of this: card.classList.toggle('is-flipped'); I used this.classList.toggle('is-flipped'); and it worked. Thanks Amine.
– Whodini
Nov 10 at 22:20

|
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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
1
down vote

accepted

This is why it works only for the first element.

If you want to apply this on all elements, you can use jQuery and register the event when the page is fully loaded.

<head>



    <script src="https://code.jquery.com/jquery-3.3.1.js">



    <script>



        $(document).ready(function()

        {

            $(".inner").click(function(event)

            {

                var card = event.target;

                card.classList.toggle('is-flipped');

            });

        });



    </script>



</head>

Please know that you don't need the function with the foor loop, as jQuery will automatically apply the click event whenever a new element is added.

edited Nov 10 at 22:04

answered Nov 10 at 21:44

Amine Messaoudi

450314

1

Thanks for answering Amine. I'm tinkering with it now...
– Whodini
Nov 10 at 22:02

I have updated my answer
– Amine Messaoudi
Nov 10 at 22:04

Still not working. I think your code works all except the event.target part. Doesn't seem to be calling anything. When I replace that with var card = document.querySelector('.inner'); clicking any card will flip the first one. So it's close...
– Whodini
Nov 10 at 22:16

When you run my code, is there any warnings/errors in console ? Because I tested it in my computet and its working fine
– Amine Messaoudi
Nov 10 at 22:19

Ah ok I got it. Instead of this: card.classList.toggle('is-flipped'); I used this.classList.toggle('is-flipped'); and it worked. Thanks Amine.
– Whodini
Nov 10 at 22:20

|
show 1 more comment

up vote
1
down vote

accepted

This is why it works only for the first element.

If you want to apply this on all elements, you can use jQuery and register the event when the page is fully loaded.

<head>



    <script src="https://code.jquery.com/jquery-3.3.1.js">



    <script>



        $(document).ready(function()

        {

            $(".inner").click(function(event)

            {

                var card = event.target;

                card.classList.toggle('is-flipped');

            });

        });



    </script>



</head>

Please know that you don't need the function with the foor loop, as jQuery will automatically apply the click event whenever a new element is added.

edited Nov 10 at 22:04

answered Nov 10 at 21:44

Amine Messaoudi

450314

1

Thanks for answering Amine. I'm tinkering with it now...
– Whodini
Nov 10 at 22:02

I have updated my answer
– Amine Messaoudi
Nov 10 at 22:04

Still not working. I think your code works all except the event.target part. Doesn't seem to be calling anything. When I replace that with var card = document.querySelector('.inner'); clicking any card will flip the first one. So it's close...
– Whodini
Nov 10 at 22:16

When you run my code, is there any warnings/errors in console ? Because I tested it in my computet and its working fine
– Amine Messaoudi
Nov 10 at 22:19

Ah ok I got it. Instead of this: card.classList.toggle('is-flipped'); I used this.classList.toggle('is-flipped'); and it worked. Thanks Amine.
– Whodini
Nov 10 at 22:20

|
show 1 more comment

up vote
1
down vote

accepted

This is why it works only for the first element.

If you want to apply this on all elements, you can use jQuery and register the event when the page is fully loaded.

<head>



    <script src="https://code.jquery.com/jquery-3.3.1.js">



    <script>



        $(document).ready(function()

        {

            $(".inner").click(function(event)

            {

                var card = event.target;

                card.classList.toggle('is-flipped');

            });

        });



    </script>



</head>

Please know that you don't need the function with the foor loop, as jQuery will automatically apply the click event whenever a new element is added.

edited Nov 10 at 22:04

answered Nov 10 at 21:44

Amine Messaoudi

450314

This is why it works only for the first element.

If you want to apply this on all elements, you can use jQuery and register the event when the page is fully loaded.

<head>



    <script src="https://code.jquery.com/jquery-3.3.1.js">



    <script>



        $(document).ready(function()

        {

            $(".inner").click(function(event)

            {

                var card = event.target;

                card.classList.toggle('is-flipped');

            });

        });



    </script>



</head>

Please know that you don't need the function with the foor loop, as jQuery will automatically apply the click event whenever a new element is added.

edited Nov 10 at 22:04

answered Nov 10 at 21:44

Amine Messaoudi

450314

edited Nov 10 at 22:04

answered Nov 10 at 21:44

Amine Messaoudi

450314

answered Nov 10 at 21:44

Amine Messaoudi

450314

answered Nov 10 at 21:44

Amine Messaoudi

450314

1

Thanks for answering Amine. I'm tinkering with it now...
– Whodini
Nov 10 at 22:02

I have updated my answer
– Amine Messaoudi
Nov 10 at 22:04

Still not working. I think your code works all except the event.target part. Doesn't seem to be calling anything. When I replace that with var card = document.querySelector('.inner'); clicking any card will flip the first one. So it's close...
– Whodini
Nov 10 at 22:16

When you run my code, is there any warnings/errors in console ? Because I tested it in my computet and its working fine
– Amine Messaoudi
Nov 10 at 22:19

Ah ok I got it. Instead of this: card.classList.toggle('is-flipped'); I used this.classList.toggle('is-flipped'); and it worked. Thanks Amine.
– Whodini
Nov 10 at 22:20

|
show 1 more comment

1

Thanks for answering Amine. I'm tinkering with it now...
– Whodini
Nov 10 at 22:02

I have updated my answer
– Amine Messaoudi
Nov 10 at 22:04

Still not working. I think your code works all except the event.target part. Doesn't seem to be calling anything. When I replace that with var card = document.querySelector('.inner'); clicking any card will flip the first one. So it's close...
– Whodini
Nov 10 at 22:16

When you run my code, is there any warnings/errors in console ? Because I tested it in my computet and its working fine
– Amine Messaoudi
Nov 10 at 22:19

Ah ok I got it. Instead of this: card.classList.toggle('is-flipped'); I used this.classList.toggle('is-flipped'); and it worked. Thanks Amine.
– Whodini
Nov 10 at 22:20

Thanks for answering Amine. I'm tinkering with it now...
– Whodini
Nov 10 at 22:02

I have updated my answer
– Amine Messaoudi
Nov 10 at 22:04

Still not working. I think your code works all except the event.target part. Doesn't seem to be calling anything. When I replace that with var card = document.querySelector('.inner'); clicking any card will flip the first one. So it's close...
– Whodini
Nov 10 at 22:16

When you run my code, is there any warnings/errors in console ? Because I tested it in my computet and its working fine
– Amine Messaoudi
Nov 10 at 22:19

Ah ok I got it. Instead of this: card.classList.toggle('is-flipped'); I used this.classList.toggle('is-flipped'); and it worked. Thanks Amine.
– Whodini
Nov 10 at 22:20

|
show 1 more comment

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