Implementing CSS styles on freshly added elements

When dynamically adding an element to a parent div, I encounter an issue where the styles defined in my CSS are not applied to the newly added element.

$('.some_div').append("<li class='hi'>hey!</li>")

Although I can manually add the styles using JavaScript like this:

$('.some_div').append("<li class='hi'>hey!</li>")
$('li.hi').css({"color":"white"});

I find this redundant as the style is already defined in my CSS file. Is there a way to avoid this redundancy?

Update:

$('.some_div').append('<li style="color:white" >hey!</li>')

This solution works but still feels redundant since the style is defined elsewhere in the CSS file. Is there a way to apply the existing styles without having to re-define them in a css() function?

In my CSS file,

.some_div > li {
  font-size: 20px;
  background-color: 30px;
  margin-right: 2px;
}

.hi {
  color: white;
}

It seems that none of these styles get applied when using ($).append(), leading me to wonder if there is a better way to handle applying pre-defined styles.

Answer №1

Remember to properly escape the class name in this case.

Modify

$('.some_div').append("<li class='hi'>hey!</li>");

to

$('.some_div').append("<li class=\"hi\">hey!</li>");

OR

$('.some_div').append("<li class='hi'>hey!</li>");

Check out the DEMO here.

Demo with different style:

$('.some_div').append("<li style='color:red;'>hey!</li>");

OR

$('.some_div').append("<li>hey!</li>").find("li:last").css("color","blue");

Take a look at the Demo here.

Answer №2

The issue may lie in your string concatenation method, as the string literal enclosed within "" requires any instance of " to be escaped.

$('.another_div').append('<li class="hello">hi!</li>');

See it in action: Try it out

Keep in mind that a li element is a valid child for either ul or ol, so ensure that another_div is one of them.

Answer №3

Give this a shot

$('.some_div').append('<li class="hello">hello!</li>')

To add custom styling to the element:

$('.some_div').append('<li style="background-color:black" >hello!</li>')

To apply CSS based on a specific class:

$('.hello').css("color","red");

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