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How to create a basic plugin in jQuery?
Let’s say we want to create a plugin that makes text within a set of retrieved elements green. All we have to do is add a function called greenify to $.fn and it will be available just like any other jQuery object method. Notice that to use .css (), another method, we use this, not $ ( this ).
Is there a way to declare a function in jQuery?
I know that in JavaScript the syntax is as follows: Is there a way to declare a function in jQuery that can be added to an element? For example: In spite of all the answers you already received, it is worth noting that you do not need to write a plugin to use jQuery in a function.
How to create custom jQuery function and how to use it?
It then declares a method on $.fn, which is just an alias for $.prototype. Inside that method, this refers to the matched set of elements on which the plugin has been called.
What does MyFunction do in JQuery plugin?
jQuery.fn.myFunction = function() { // Usually iterate over the items and return for chainability // ‘this’ is the elements returns by the selector return this.each(function() { // do something to each item matching the selector } }. This is usually called a jQuery plugin.
Why is it important to expose default plugin settings?
An improvement we can, and should, make to the code above is to expose the default plugin settings. This is important because it makes it very easy for plugin users to override/customize the plugin with minimal code. And this is where we begin to take advantage of the function object.
How to make a jQuery plugin chainable in JavaScript?
Making our plugin method chainable takes one line of code: this.css ( “color”, “green” ); The $ variable is very popular among JavaScript libraries, and if you’re using another library with jQuery, you will have to make jQuery not use the $ with jQuery.noConflict ().
How can I Make my greenify plugin more customizable?
As your plugins get more and more complex, it’s a good idea to make your plugin customizable by accepting options. The easiest way to do this, especially if there are lots of options, is with an object literal. Let’s change our greenify plugin to accept some options.