Using Chrome Dev Tools

Sep 24, 20161 like3,013 views

Chrome is not just a great browser for viewing websites, but also an invaluable tool for building websites. Out of the box, Chrome ships with “developers tools”. Many web developers are aware of this and make use of some of the tools it provides. However, most developers only scratch the surface of what the browser can do. Join in as we take a deep-dive into the Chrome developer tools and learn, among other things, how to: – Quickly test styling fixes – Emulate handheld devices to test responsive designs – Easily navigate and debug JavaScript – Use the JavaScript console – View form submissions – Monitor AJAX requests – Check for performance issues – Troubleshoot caching issues – Create and use your own snippets

Micah Wood
@wpscholar
https://wpscholar.com/wcraleigh2016
Using Chrome
Developer Tools

Resources
• Chrome Snippets - http://bgrins.github.io/devtools-snippets/
• Chrome Tips - https://wpscholar.com/?s=chrome
• 25 Tips and Tricks - https://www.keycdn.com/blog/chrome-devtools/
• Chrome Command Line API - http://developer.telerik.com/content-
types/tutorials/easier-web-application-debugging-command-line-api/

Chrome Developer Tools (DevTools) are a set of web authoring and debugging tools built into Google Chrome. DevTools provide developers with access to inspect and edit web pages, debug JavaScript code, analyze network activity, audit page performance, and profile loading times. It contains panels for Elements, Sources, Console, Resources, Network, Audits, Timeline, and Profiles to help debug issues and optimize websites and web applications. DevTools can be accessed from the Chrome menu or by right-clicking on a page element.

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JSX is an XML-like syntax used with React to describe what the UI should look like. There can only be one root element, attribute names use camelCase, and expressions are used to render dynamic values. Custom components start with uppercase letters and can accept children as nested elements or via the "children" prop. Conditional rendering uses techniques like the && and ternary operators to toggle display of components.

WP-CLI For The WinMicah Wood

Becoming a WordPress Coding MasterMicah Wood

This document provides tips for becoming a WordPress coding master, including knowing how you learn best, developing locally, learning to debug, collaborating with others, having a plan with milestones and actions items, finding a mentor, writing readable code, using version control, reusing code, managing dependencies, filling knowledge gaps in security, testing, and design patterns, getting code reviews, and varying learning experiences.

Debugging in PHPMicah Wood

The art of debugging code requires a good understanding of the codebase and logical deduction skills. A good debugging tool is like a code mentor that can walk you through the code and help you better understand what is going on, but the deductive reasoning is still up to you. In this session, you will learn how to use Xdebug, a PHP debugging tool to: – Step through the code line-by-line – Set breakpoints to pause the code at any point – View the variables that are in scope when the code is paused – Watch variables and functions as you step through the code – Change variable values as the code runs – Investigate the call stack to see the files loaded and functions run – Surface hidden issues in your code As a bonus, you will learn a few tips for helping you track down your next bug with better deductive reasoning as well!

WordPress HooksMicah Wood

Anyone who has worked with WordPress before knows that it is both flexible and extensible; mainly because of the sheer number of plugins and themes available. However, without hooks, WordPress would have no plugins and themes would be very limited in what they could do. Hooks have played a key role in WordPress's success and it is vital for any WordPress coder to understand how they work. Come learn about: - The two types of WordPress hooks: actions and filters - What hooks WordPress makes available - Where to place your code to ensure it is run - When code is run in WordPress and how to control priority - How to leverage hooks in your own code - Why the hook system is a great implementation of the open/closed principle - Ways you could leverage hooks to do awesome things in WordPress

The Modern JavaScript Developers ToolboxMicah Wood

Using Composer with WordPressMicah Wood

An Introduction to PHP ClassesMicah Wood

Many WordPress developers start out learning PHP from playing around with themes and then slowly pick up the language and start moving towards writing their own plugins. However, it is common to find WordPress developers struggling to grasp the higher-level concepts and features of PHP. Let's fill the gaps in our self-learning and break through to the next level of PHP programming by learning what PHP classes are and how they can be used to make your code simpler, easier to read and easier maintain.

Backbone + ReactMicah Wood

After using Backbone extensively for an enterprise project, we decided to make the jump and start using React to replace our Backbone views and templates. As a first time user of React, the learning curve wasn’t too steep but there were definitely some gotchas and mental shifts that had to take place. For those of you who are interested in trying out React for the first time or who are looking to integrate React into a Backbone project, come hear a down-to-earth walkthrough of my lessons learned and save yourself hours of research and tinkering. Presented at Connect.js 2015

Advanced Development WorkflowsMicah Wood

Debugging in PHPMicah Wood

This document discusses various debugging techniques in PHP including identifying issues, isolating problems, determining the type and source of issues, using tools like Xdebug and PHPStorm for debugging, setting breakpoints, stepping through code, watching variables, profiling code, and fixing and testing issues. It provides tips on debugging PHP code through steps to reproduce errors, examining error messages, and using debugging tools and techniques.

Troubleshooting WordPress IssuesMicah Wood

Using Composer with WordPress - 2.0Micah Wood

Composer is a command line dependency management tool designed for PHP. Come learn how Composer can help you: - Simplify new project creation - Minimize duplication of code in your project repositories - Quickly install and update plugins and themes in bulk - Manage versioning within your project - Follow best practices when managing code for your projects http://wpscholar.com/loopconf2015

Using composer with WordPressMicah Wood

Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you. Composer resolves dependencies declared in a composer.json file and installs the packages into a vendor directory. It supports semantic versioning so you can specify versions and ranges of dependencies. You can use Composer to install WordPress and its plugins/themes by requiring them as dependencies.

Sanitizing, Validating and Escaping in WordPress Themes and PluginsMicah Wood

Getting Started with VagrantMicah Wood

Learn how Vagrant, a tool for creating portable development environments, can help you: - Easily setup a local development environment - Match your local development environment to production and avoid surprises during deployment. - Share development environments with team members and get new team members up and running in record time. - Easily deploy code by using providers and provisioners. Presentation given at WordCamp Asheville 2014: http://2014.asheville.wordcamp.org/session/getting-started-with-vagrant/ NOTE: This slide deck isn't going to be extremely helpful on its own. Please view the associated blog post for more context: http://wpscholar.com/presentations/getting-started-with-vagrant/

Introduction to JSXMicah Wood

WP-CLI For The WinMicah Wood

Becoming a WordPress Coding MasterMicah Wood

Debugging in PHPMicah Wood

WordPress HooksMicah Wood

The Modern JavaScript Developers ToolboxMicah Wood

Using Composer with WordPressMicah Wood

An Introduction to PHP ClassesMicah Wood

Backbone + ReactMicah Wood

Advanced Development WorkflowsMicah Wood

Debugging in PHPMicah Wood

Troubleshooting WordPress IssuesMicah Wood

Using Composer with WordPress - 2.0Micah Wood

Using composer with WordPressMicah Wood

Sanitizing, Validating and Escaping in WordPress Themes and PluginsMicah Wood

Getting Started with VagrantMicah Wood

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