- Just like the name goes – form validation – checks and validates whether or not the provided information or data is accurate or not.
- In order to solve this problem, asynchronous programming comes into play.
- List of extra topics that assume you’ve covered the first two parts of tutorial.
- It was developed by Netscape Communications Corporation, Mozilla Foundation, and ECMA International.
The delivery and storage of web pages to end-users are done through web servers. JS helps in creating web servers through Node.js, which is an open-source environment and uses JS on the server-side.
Working With Strings
- The name was suggested and provided in the times when Java was gaining popularity in the market.
- The reference contains examples for all properties, methods and events, and is continuously updated according to the latest web standards.
A User Name Of Null?
- DEV is a community of software developers writing articles to learn and help one another out.
- But there are a lot of answers to be found there if you put in the time and effort.
Popular Computer Skills Lessons
- It enables you to test what you have learned earlier from this tutorial.
- Proxy – learn how to use the proxy object that wraps another object and intercepts the fundamental operations of the target object.
- Apply() – learn how to use the apply() method effectively.
- It has divided the course content into different sections.
- Object Destructuring – learn how to assign properties of an object to variables.
Learn The Basics
Go to your test site and create a new folder named scripts. Within the scripts folder, create a new text document called main.js, and save it.
The setUserName() function contains a prompt() function, which displays a dialog box, similar to alert(). This prompt() function does more than alert(), asking the user to enter data, and storing it in a variable after the user clicks OK. Next, the code calls on an API localStorage, which allows us to store data in the browser and retrieve it later. Finally, we set the textContent of the heading to a string, plus the user’s newly stored name.