Category: JavaScript

Sometimes, we want to sort objects by property values with JavaScript.

In this article, we’ll look at how to sort objects by property values with JavaScript.

How to sort objects by property values with JavaScript?

To sort objects by property values with JavaScript, we can use the array sort method.

For instance, we write

const cars = [
  {
    name: "Honda",
    speed: 80,
  },

  {
    name: "BMW",
    speed: 180,
  },

  {
    name: "Trabi",
    speed: 40,
  },

  {
    name: "Ferrari",
    speed: 200,
  },
];

const sortedCars = cars.sort((a, b) => {
  return a.speed - b.speed;
});

to call cars.sort with a function that returns a.speed - b.speed to sort the cars entries by the speed property value of each entry in ascending order.

Conclusion

To sort objects by property values with JavaScript, we can use the array sort method.

Sometimes, we want to insert an array inside another array with JavaScript.

In this article, we’ll look at how to insert an array inside another array with JavaScript.

How to insert an array inside another array with JavaScript?

To insert an array inside another array with JavaScript, we can use the array splice method.

For instance, we write

a1.splice(2, 0, ...a2);

to call a1.splice with 2, 0 and the entries in array a2 as arguments.

We insert the elements of a2 from index 2 of a1 and we delete 0 entries from a1 before we insert them.

Conclusion

To insert an array inside another array with JavaScript, we can use the array splice method.

Sometimes, we want to fix blurry text in the HTML5 canvas with JavaScript.

In this article, we’ll look at how to fix blurry text in the HTML5 canvas with JavaScript.

How to fix blurry text in the HTML5 canvas with JavaScript?

To fix blurry text in the HTML5 canvas with JavaScript, we set the width and height of the canvas.

For instance, we write

canvas.width = 1000;
canvas.height = 500;
canvas.style.width = width;
canvas.style.height = height;

to set the canvas width and height to a large number with

canvas.width = 1000;
canvas.height = 500;

to increase its resolution to make it less blurry.

Then we set the actual width and height of the canvas with

canvas.style.width = width;
canvas.style.height = height;

Conclusion

To fix blurry text in the HTML5 canvas with JavaScript, we set the width and height of the canvas.

Sometimes, we want to programmatically open new pages on tabs with JavaScript.

In this article, we’ll look at how to programmatically open new pages on tabs with JavaScript.

How to programmatically open new pages on tabs with JavaScript?

To programmatically open new pages on tabs with JavaScript, we call the window.open method with '_newtab'.

For instance, we write

window.open("page.html", "_newtab");

to open page.html with window.open.

We open the page in a new tab by calling it with '_newtab' as the 2nd argument.

Conclusion

To programmatically open new pages on tabs with JavaScript, we call the window.open method with '_newtab'.

Sometimes, we want to use dynamic function name in JavaScript.

In this article, we’ll look at how to use dynamic function name in JavaScript.

How to use dynamic function name in JavaScript?

To use dynamic function name in JavaScript, we can create an object with the function name.

For instance, we write

const name = "myFn";
const fn = { [name]() {} }[name];

to set the fn variable to a function with the name name.

We put the name method in the object and then we get the method with [name].

Conclusion

To use dynamic function name in JavaScript, we can create an object with the function name.