const invertColor = (bg) => {
bg=parseInt(Number(bg.replace('#', '0x')), 10)
bg=~bg
bg=bg>>>0
bg=bg&0x00ffffff
bg='#' + bg.toString(16).padStart(6, "0")
return bg
}
Here is what the above code is Doing:
1. It takes the hex value of the background color and converts it to a number.
2. It inverts the number.
3. It converts the inverted number back to a hex value.
4. It returns the hex value.
$(elem).click(myFunc()); Here is what the above code is Doing: 1. The first line is creating a variable called elem and assigning it to the element with the id of “my-button”. 2. The second line is creating a variable called myFunc and assigning it to a function that will alert “Hello World”. 3. The third line…
var arr=[]; arr.join(“hi”,”omago”); Here is what the above code is Doing: 1. We create an array called arr. 2. We call the join method on arr. 3. We pass two arguments to the join method. 4. The join method returns a string. 5. We log that string to the console. The join method is a…
switch (true) { case (0
var arr = [1, 2, 3, 4, 5]; arr.slice().reverse() .forEach(function(item) { console.log(item); }); Here is what the above code is Doing: 1. We create an array with 5 elements. 2. We call the slice() method on the array. This method returns a shallow copy of the array. 3. We call the reverse() method on the…
// Great free online ebook for Javascript programming https://eloquentjavascript.net/ Here is what the above code is Doing: 1. We’re creating a variable called “name” and assigning it the value of “John”. 2. We’re creating a variable called “age” and assigning it the value of “30”. 3. We’re creating a variable called “is_married” and assigning it…
let reg = /[^charachter_to_not_match]*/ // Example let str = ” //match everything but ‘>’ reg = /[^>]+/g // Array(3) [“