Before things little contact with the front end, knowledge is limited to the basic knowledge learned, very complicated mess. So starting today, to learn a little bit of front-end Web, hoping to make their knowledge more systematic and structured. Record their own learning and growing in a blog format. Give yourself a good wishes, hope to continue to make progress. Come to yourself!
I'm using now the most popular VSCode, download only Baidu search vscode or visit https://code.visualstudio.com/ Click Download to download the installation package, then that is a fool installation, you can continue to next. Because the front-end development is inseparable from the browser, the browser you want to continue to understand the prevalence can Baidu search market share in the browser or log https://tongji.baidu.com/data/browser see major browsers prevalence. Here is what I intercepted fragments 
visible chrome is still strong, IE followed. I wrote the following examples were tested in the chrome.