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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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About the <head>

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

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HTML 

              
                <html>
<head>
  <meta charset="utf-8">
  <title>JavaScript program to implement a function that executes a given function repeatedly at a fixed interval using 'setInterval()'</title>
</head>
<body>

</body>
</html>
!

CSS
!

JS 

              
                function repeat_Function(fn, interval) {
  // Execute the function immediately
  fn();
  // Set up the interval to execute the function repeatedly
  const intervalId = setInterval(fn, interval);
  // Return a function to stop the execution
  return function stopExecution() {
    clearInterval(intervalId);
    console.log('Execution stopped.');
  };
}
// Usage example:
const intervalMs = 1000; // 1 second
// Define the function to be repeated
function printMessage() {
  console.log('Executing the function...');
}
// Start the repeated execution
const stopExecution = repeat_Function(printMessage, intervalMs);
// Stop the execution after 4 seconds
setTimeout(() => {
  stopExecution();
}, 4000);
!
999px

Console