Here are some question-based titles that fit your article: * How to Check if CSS Properties and Values Are Supported by a Browser? * CSS Support Checker: How to Verify Property and Value Compatibili

How to Verify CSS Property and Value Support in a Browser

When implementing CSS, it's crucial to ensure that your styles are supported by the user's browser. Let's investigate how to determine whether both CSS properties and values are supported.

Checking CSS Property Support

In CSS:

<code class="css">@supports (display: flex) {
  /* Code to be executed if flexbox is supported */
}</code>

In JavaScript:

<code class="javascript">if ('display' in document.body.style) {
  // Flexbox is supported
}</code>

Checking CSS Value Support

In JavaScript:

<code class="javascript">const element = document.createElement('div');
element.style.setProperty('text-decoration-style', 'blink');
const style = window.getComputedStyle(element);
if (style.getPropertyValue('text-decoration-style') === 'blink') {
  // Blink effect is supported
}</code>

However, there is a newer and more efficient method available:

CSS.supports()

The CSS.supports() API offers a more robust solution:

<code class="javascript">console.log(CSS.supports('text-decoration-style', 'blink'));
// True or false

console.log(CSS.supports('display', 'flex'));
// True or false

console.log(CSS.supports('--foo', 'red'));
// True or false</code>

This method supports both property and value validation.

By utilizing these techniques, you can confidently ensure that your CSS styles will be rendered as intended, regardless of the user's browser.

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