Use the CSS selector to select elements with non-empty attributes
Short answer:
[data-foo]:not([data-foo=""]) { }
Detailed explanation: (The conclusion is the same, just explaining why we need to do this)
Suppose you have an element that uses a special data- property for style:
<div data-highlight="product"> </div>
You want to locate the element and perform special actions when highlighted.
[data-highlight] {
font-size: 125%;
}
[data-highlight="product"] img {
order: 1;
}
The data- property is part of the template, so it can have any value you set.
<div data-highlight="{{ value }}">
</div>
Sometimes there is no value! Therefore the output HTML is:
<div data-highlight=""> </div>
But this can be tricky. See the first CSS code block above, we want to locate all elements with data-highlight attribute, however, we actually want to do this only if it has a value. If the value is empty, we just want to skip any special styles.
Ideally, when there is no value, we just remove data- property from the HTML template. But many template languages ??intentionally do not allow logic that can help us add or not add that attribute entirely.
Instead, we can solve it using CSS:
[data-highlight]:not([data-highlight=""]) {
font-size: 125%;
}
[data-highlight="product"] img {
order: 1;
}
The above is the detailed content of Select an Element with a Non-Empty Attribute. For more information, please follow other related articles on the PHP Chinese website!
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