javascript
 
 
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function countDecimalPlaces(number) {
  const decimalIndex = number.toString().indexOf('.');
  return decimalIndex >= 0 ? number.toString().length - decimalIndex - 1 : 0;
}

typescript
 
 
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function addNumbers(a: number, b: number): number {
    return a + b;
}

let sum: number = addNumbers(2, 4);
console.log(sum); // 6

The above example is a simple function written in TypeScript that takes two numbers as parameters and returns their sum.

javascript
 
 
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document.addEventListener("keydown", function(e) {
  if(e.keyCode === 32) {
    var randInt = Math.floor(Math.random() * Math.floor(10000));
    console.log(randInt);
  }
})

In JavaScript, you can use the toLocaleString() method [1] to format numbers into the 'K' style. This method allows you to use the Internationalization API [2] to localize numbers.

javascript
 
 
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var num = 54321;

// To format the number so it has commas in the correct position, 
// and to express it in thousands:
var ans = num.toLocaleString('en-US', { style: 'decimal', maximumFractionDigits : 0, minimumFractionDigits: 0, useGrouping: true }); 
console.log("Formatted to 'K': "+ ans); // 54,321

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString

[2] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_objects/Intl

Math.abs is a method in JavaScript that returns the absolute value of a number.

To use it, you simply pass in the number that you want to find the absolute value of.

For example:

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let x = Math.abs(-3);
console.log(x); // 3 

This can be solved using a combination of looping and conditional statements. Below is an example solution in JavaScript.

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function isSpecialNumber(input) {
  let numString = input.toString();  // Convert input to a string

  // Loop through each character in number string
  for (let i = 0; i < numString.length; i++) {
    // Convert current char to int
    let currentNum = parseInt(numString.charAt(i));
    // Check if current number is not in the specified range
     if (currentNum > 5) {
      return false; // Not a special number
    }
  }

  return true; // All chars in the range -> Special Number
}

References:

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charAt

In JavaScript, you can use Math.floor() to round a number down to its nearest integer.

For example:

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let x = 7.82
Math.floor(x) // returns 7

For more information, please see the MDN documentation on Math.floor().

In CSS, you can achieve the desired font-weight by using the font-weight property in the element's style. For example, font-weight: bold; would set the font-weight of the element to bold. To use this property, you place the font-weight property directly after the font-stype property. You can also specify the font-weight as a number between 100 and 900, where 400 is the normal weight of a font. For reference, you can consult this link.

css
 
 
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p {
    font-weight: bold;
}