Seven Most Common jQuery Methods Last Part: ADD/REMOVE/TOGGLE CLASS()

Add, remove and toggleClass is also a very common way to manipulate style.

.addClass() and .removeClass()

I add two class selector in the style tag. Class one is to change text color to be green, and class two is change both text and background color.

Now I refresh the page and change h1 text to green by using addClass() method: $("h1").addClass("one"). If you want to remove the style, you can change it to removeClass("one").

I do the same thing to the list. I change the list color and add a background color by adding the class two style value: $("li").addClass("two").

.toggleClass()

According to jQuery, toggerClass method can add or remove one or more classes from each element in the set of matched elements, depending on either the class's presence or the value of the state argument.

I only want to change the first list item color and background by writing: $("li").first().toggleClass("two"), so the "Apple" changes to red with a yellow background.

Then, I want to change all the list items color and backgound: $("li").toggleClass("two").

As the result, the "Apple" style disappear, and the rest two fruits change the style. That's how toggle works: the "Apple" already had that class two style, so it removed automatically when I set all list items to the same class two style.

Comments

Intermediate Express.js: How To Add Styles & Partials in EJS File?

So far, we only have simple HTML tags and ejs tags in each ejs file. Every template page has no style at all. And the basic HTML header and footer are also missing. Today, I learned how to add styles and partials in ejs file. Link Style Step One: Touch a Separate CSS file I create a new directory "Style" under the "EJSDemo" directory, then I add a new CSS file "app.css" inside "Style" folder. Step Two: Add app.use(express.static()) in the app.js I add app.use(express.static("style")) in the "app.js". This will tell Express.js to serve the content of "Style" directory. Step Three: Write styles in CSS file I simple give body an orange background color and set text color to be grey. Step Four: Link to CSS file in the EJS file I just add <link> tag to link the "app.css" file on the top of the h1 tag in each ejs template. As the result, when I run the app and...

My Story: A Mommy Start To Learn Code From Zero

From Google Image I am not a programmer, and I thought I would never become one. Everytime I see someone is coding, I think he or she must be very talent. For me, coding is a very difficult subject to learn. Not only the language has so many rules, but also the logical reasoning behind the language is complex. In my graduated school, I knew many friends who didn't have any coding background, but they are doing programmer or developer jobs now. Some of them went to school to study coding, and some of them learned to code by themselves. Their stories are so impressive. I wasn't ready to learn code until I finished my first Chinese book "留学，我的青春呀!" recently. I always want to be a writer and write my own book. I started writing blog three years ago, and I updated my post two to three times every week. As I enjoyed writing , I started to get some followers, likes, and good comments on my blog. Then, I decided to plan my first book. My First...

Three Most Common HTML Form Elements You Should Know

When I visited the Facebook page at the first time, it required me to sign up. Therefore, I completed the sign up form to create my new account. The form is very simple to fill in because it only asks for very common information such as full name, phone number, new password, birthday, and gender. It only took me one or two minutes to finish the form. Not only Social media sites require us to sign up first before we post anything, but many business or eCommerce sites also ask us to create new account before we take any action. For example, when I go to the Origins skin care site, it will pop up a email sign up form window. To encourage new customers to sign up, it gives a 15% off for the first order. It is definitely an attractive call-to-action message. Anyway, if your website requires users to sign up, you need to know how to create a HTML form. Yesterday, I just learned how to build a simple HTML form from Udemy course. And it is not that hard. All you need to kno...

Learn Bootcamp From Zero

Search This Blog