If you know the concept of Object in JavaScript, you will know that its an advanced way of handling data in JavaScript, and basically, it consists of a disordered collection of related information: primitive data types, values in properties, methods… everything designed under a basic structure of key pairs: value. See this set of guidelines, quite old but interesting: http://lab.abhinayrathore.com/jquery-standards. In this step we will create a small and persistent visit counter to inform the user of the number of times he or she has loaded our custom /javascript/custom/ route. libraries: $("#bacon-text").append(new_bacon); In this guide we are going to make modifications and operations on HTML elements, so we will learn how to make changes on the DOM from Drupal. We want to extract data about the visitors identity in order to give them a more personal greeting. Enter JS code. - fluffiness/cuddly-slider. What can we do? 1-Introduction2- JavaScript and Drupal: basic concepts3- How to include JavaScript code in Drupal, 4- Just a little bit more of JavaScript in Drupal, 7- JavaScript without JavaScript: #ajax, #states, 8- Troubleshooting: Problems and Solutions, Exercise 1: Creating a basic custom moduleExercise 2: Defining our new custom libraryExercise 3: Defining our initial JavaScript fileExercise 4: Adding libraries to our Drupal custom moduleExercise 5: Passing values to the IIFE formatExercise 6: Transfering values trough drupalSettingsExercise 7: Custom Visit Counter with JavaScriptExercise 8: Changes based in jQueryExercise 9: Dialog Window from the global object DrupalExercise 10: Image Board from Unsplash using Drupal Behaviors. But what matters most is that we don't decide whether to attach a library based on which page we're on (i.e. You can set CSS weights with 5 different levels of styling: This is defined by the SMACSS standard. See the next example: This code, when executed, will make several print calls in Console (in this case, up to three times): Why is this? If you actually reference a javascript file, then it will be automatically cached (see Parameters section). Dynamically built, but used across multiple requests, In Drupal 7 libraries had to be defined using, Now settings are only added to the page if a required library depends on the, Only the JavaScript required on a particular page will be added to that page.
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