When jQuery adds new elements, their CSS may not be applied accurately

Question

When jQuery adds new elements, their CSS may not be applied accurately

One issue I encountered is using jQuery to dynamically add new elements, only to find that the CSS isn't being applied correctly to the newly added element.

To illustrate this problem, I created a jsFiddle. In the example, there are differences in spacing between the newly added input text boxes.

Here's a snippet of the HTML code:

<fieldset>
    <div class="control-group custom">
        <label class="input-mini" for="first">Start</label>
        <label class="input-mini" for="first">End</label>
        <label class="input-mini" for="first">Share</label>
    </div>
    <div class="control-group custom">
        <input type="text" class="input-mini">
        <input type="text" class="input-mini">
        <input type="text" class="input-mini">
    </div>
    <div>   
     <a id="plus_time_button" class="btn plus" href="#">
      <i class="icon-plus-sign"></i>
     </a>
    </div>
</fieldset>

Below is a portion of the JS code used:

 $("#plus_time_button").live("click", function () {
    var new_row = "<div class=\"control-group custom\"><input type=\"text\" class=\"input-mini\"><input type=\"text\" class=\"input-mini\"><input type=\"text\" class=\"input-mini\"></div><div><a id=\"plus_time_button\" class=\"btn plus\" href=\"#\"><i class=\"icon-plus-sign\"></i></a></div>";
    $("fieldset div:last-child").remove();
    $("fieldset").append(new_row);
});

And here is some of the CSS code utilized:

.custom label {
    padding: 4px 6px;
    margin-right: 20px;
    display: inline-block;
    text-align: center !important;
}
.custom input {
    margin-right: 20px;
}

I did come across a similar question, but unfortunately, it didn't provide a solution to my specific problem.

jquery css twitter-bootstrap

Answer 1

Answer №1

Spacing matters.

Your initial HTML utilizes code similar to this:

<input ...>
<input ...>

The new HTML you added looks like this:

<input ...><input ...>

The difference lies in the whitespace between tags, where the first example results in a small space between tags, while the added rows do not have any extra space.

To avoid this whitespace interference, one approach is to format your code like so:

<input type=text class=input-mini
><input type=text ...

In this formatting, the closing angle bracket wraps to the next line to eliminate unwanted spaces.

However, a better practice is to reuse the same DOM elements in each row to maintain consistency across all rows.

One method I often use is creating a template for a single row with an id of "T":

<div id=T class="control-group custom">
  <input type=text class=input-mini>
  <input type=text class=input-mini>
  <input type=text class=input-mini>
</div>

You can then clone this template whenever you need to add a new row, ensuring that the original HTML structure is preserved:

var plus = $('#plus_time_button').closest('div');
var T = $('#T');
T[0].id = '';

for(var i = 0; i < 3; i++)
    plus.before(T.clone());

$('#plus_time_button').click(function () {
    plus.before(T.clone());
});

In my original response, I used the .live() event syntax. While it may not be necessary if you are using jQuery 1.7 or 1.8, the above code eliminates the need for live since the targeted element remains in the DOM. For guidance on converting .live() calls for jQuery 1.9, refer to the jQuery documentation here:

http://api.jquery.com/live/#entry-longdesc

Answer 2

Spacing matters.

Your initial HTML utilizes code similar to this:

<input ...>
<input ...>

The new HTML you added looks like this:

<input ...><input ...>

The difference lies in the whitespace between tags, where the first example results in a small space between tags, while the added rows do not have any extra space.

To avoid this whitespace interference, one approach is to format your code like so:

<input type=text class=input-mini
><input type=text ...

In this formatting, the closing angle bracket wraps to the next line to eliminate unwanted spaces.

However, a better practice is to reuse the same DOM elements in each row to maintain consistency across all rows.

One method I often use is creating a template for a single row with an id of "T":

<div id=T class="control-group custom">
  <input type=text class=input-mini>
  <input type=text class=input-mini>
  <input type=text class=input-mini>
</div>

You can then clone this template whenever you need to add a new row, ensuring that the original HTML structure is preserved:

var plus = $('#plus_time_button').closest('div');
var T = $('#T');
T[0].id = '';

for(var i = 0; i < 3; i++)
    plus.before(T.clone());

$('#plus_time_button').click(function () {
    plus.before(T.clone());
});

In my original response, I used the .live() event syntax. While it may not be necessary if you are using jQuery 1.7 or 1.8, the above code eliminates the need for live since the targeted element remains in the DOM. For guidance on converting .live() calls for jQuery 1.9, refer to the jQuery documentation here:

http://api.jquery.com/live/#entry-longdesc

Answer 3

Answer №2

Relocated plus_time_button from within fieldset to outside

$("#plus_time_button").on("click", function () {
    $("fieldset").find('div:last').clone().appendTo('fieldset');
    //scrollToBottom("create_table");
});

Fiddle in action -- http://jsfiddle.net/SSPRJ/

Answer 4

Relocated plus_time_button from within fieldset to outside

$("#plus_time_button").on("click", function () {
    $("fieldset").find('div:last').clone().appendTo('fieldset');
    //scrollToBottom("create_table");
});

Fiddle in action -- http://jsfiddle.net/SSPRJ/

Answer 5

Answer №3

To ensure proper spacing between the inputs, I have included "&nbsp" in between them

$("#plus_time_button").on("click", function () {
    var new_row = "<div class=\"control-group custom\"><input type=\"text\" class=\"input-mini\">&nbsp<input type=\"text\" class=\"input-mini\">&nbsp<input type=\"text\" class=\"input-mini\"></div><div><a id=\"plus_time_button\" class=\"btn plus\" href=\"#\"><i class=\"icon-plus-sign\"></i></a></div>";
    $("fieldset div:last-child").remove();
    $("fieldset").append(new_row);
    scrollToBottom("create_table");
});

JSFIDDLE

Answer 6

To ensure proper spacing between the inputs, I have included "&nbsp" in between them

$("#plus_time_button").on("click", function () {
    var new_row = "<div class=\"control-group custom\"><input type=\"text\" class=\"input-mini\">&nbsp<input type=\"text\" class=\"input-mini\">&nbsp<input type=\"text\" class=\"input-mini\"></div><div><a id=\"plus_time_button\" class=\"btn plus\" href=\"#\"><i class=\"icon-plus-sign\"></i></a></div>";
    $("fieldset div:last-child").remove();
    $("fieldset").append(new_row);
    scrollToBottom("create_table");
});

JSFIDDLE

Answer 7

Answer №4

Your initial HTML code is being affected by the spaces within it.

Simple solution

Check out this demo

To resolve this issue, eliminate the spaces in your HTML code:

...
<input type="text" class="input-mini">
<input type="text" class="input-mini">
...

The problem arises from a carriage return between the two lines which the browser interprets as an actual space.

Make sure to keep your elements without any spaces:

<input type="text" class="input-mini"><input type="text" class="input-mini">

Why does this happen?

When using display: inline-block, the browser applies text interpretation rules including respecting spaces between HTML elements.

If you are generating dynamic elements with JavaScript, string concatenation does not include additional spaces.

An alternative approach would be to use the following CSS:

.custom label {
  padding: 4px 6px;
  margin-left: 20px;
  display: block;
  float: left;
}

.custom label:first-child { margin-left: 0; }

Answer 8

Your initial HTML code is being affected by the spaces within it.

Simple solution

Check out this demo

To resolve this issue, eliminate the spaces in your HTML code:

...
<input type="text" class="input-mini">
<input type="text" class="input-mini">
...

The problem arises from a carriage return between the two lines which the browser interprets as an actual space.

Make sure to keep your elements without any spaces:

<input type="text" class="input-mini"><input type="text" class="input-mini">

Why does this happen?

When using display: inline-block, the browser applies text interpretation rules including respecting spaces between HTML elements.

If you are generating dynamic elements with JavaScript, string concatenation does not include additional spaces.

An alternative approach would be to use the following CSS:

.custom label {
  padding: 4px 6px;
  margin-left: 20px;
  display: block;
  float: left;
}

.custom label:first-child { margin-left: 0; }

Answer 9

Answer №5

After adding a new node to my accordion, I make it update by using the following code:

$('#accordion').accordion( "refresh" );

Answer 10

After adding a new node to my accordion, I make it update by using the following code:

$('#accordion').accordion( "refresh" );

When jQuery adds new elements, their CSS may not be applied accurately

Answer №1

Answer №2

Answer №3

Answer №4

Simple solution

Why does this happen?

Answer №5

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