Category: JavaScript Answers

Sometimes, we want to use Lodash in all Vue component templates.

In this article, we’ll look at how to use Lodash in all Vue component templates.

How to use Lodash in all Vue component templates?

To use Lodash in all Vue component templates, we can add Lodash into Vue‘s prototype.

For instance, we write

import _ from "lodash";

Object.defineProperty(Vue.prototype, "$_", { value: _ });

to call Object.defineProperty with Vue.prototype, "$_", and { value: _ } to add the $_ property into Vue.prototype.

Then we can access Lodash with this.$_ or $_ in the component methods and template respectively.

Conclusion

To use Lodash in all Vue component templates, we can add Lodash into Vue‘s prototype.

Sometimes, we want to replace forward slash "/ " character in a JavaScript string.

In this article, we’ll look at how to replace forward slash "/ " character in a JavaScript string.

How to replace forward slash "/ " character in a JavaScript string?

To replace forward slash "/ " character in a JavaScript string, we can use the string replace method.

For instance, we write

const str = someString.replace(/\//g, "-");

to call someString.replace with the /\//g regex and '-' to replace all forward slashes with dashes.

The g flag makes replace replace all matches.

Conclusion

To replace forward slash "/ " character in a JavaScript string, we can use the string replace method.

Sometimes, we want to access elements by type in JavaScript.

In this article, we’ll look at how to access elements by type in JavaScript.

How to access elements by type in JavaScript?

To access elements by type in JavaScript, we use the querySelectorAll method.

For instance, we write

const els = document.querySelectorAll("input[type=text]");

to call querySelector to select all input elements with type attribute set to text.

A node list is returned with all the selected elements included.

Conclusion

To access elements by type in JavaScript, we use the querySelectorAll method.

Sometimes, we want to sort DOM nodes with JavaScript.

In this article, we’ll look at how to sort DOM nodes with JavaScript.

How to sort DOM nodes with JavaScript?

To sort DOM nodes with JavaScript, we convert the node list to an array.

For instance, we write

const list = document.querySelector("#test-list");

[...list.children]
  .sort((a, b) => (a.innerText > b.innerText ? 1 : -1))
  .forEach((node) => list.appendChild(node));

to select the element with ID test-list with querySelector.

Then we get the child elements of it as a node list with list.children.

Next, we convert the node list to an array with the spread operator.

And then we call sort with a callback to sort the nodes by their innerText values and return the sorted array.

Finally, we call forEach to loop through each node.

Conclusion

To sort DOM nodes with JavaScript, we convert the node list to an array.

Sometimes, we want to converting object to array with JavaScript.

In this article, we’ll look at how to converting object to array with JavaScript.

How to converting object to array with JavaScript?

To converting object to array with JavaScript, we use the Object.values method.

For instance, we write

const inputObj = { a: "foo", b: [1, 2, 3], c: null, z: 55 };
const arr = Object.values(inputObj);

to call Object.values with inputObj to return an array with all the property values in inputObj.

Conclusion

To converting object to array with JavaScript, we use the Object.values method.