![]() There’s one extra thing you need for that – Source Maps. With WebStorm you can also debug code written in TypeScript (though you need to compile it to JavaScript first to run it with node). For any earlier versions it will use the old options and protocol. WebStorm will check the node version you’re using and if it’s 8+, it will use the new options and protocol. With WebStorm, you don’t have to worry about the protocols and options. The command-line options that you need to use to start debugging have changed to -inspect and -inspect-brk. Debugging protocolsĪs you may know, in version 7+ Node.js changed its debugging protocol to the Chrome Debugging Protocol. Tip: another way to quickly run or debug a Node.js file is using the Run or Debug actions in the context menu of the JavaScript file. Explore the call stack and the variables in the debugging tool window, hover over the expressions in the editor to see their current state, step through the code, or put new breakpoints to help you debug further. Now if you do the actions that trigger the code where the breakpoint is, the app will pause on the breakpoint. If you just want to run the app, click the green run icon next instead or press Ctrl-D / Shift + F10.Now press Ctrl-D on macOS or Shift+F9 on Windows & Linux to debug the app (or click the green bug-like icon). Now specify the path to the main file of the application that starts it.To create a configuration, go to the Run menu and select Edit configurations… Click the + icon and select Node.js configuration type.We need to do two things: first, create a new Node.js run/debug configuration that will start the app, and then put a breakpoint. We’ll use a simple Express app as an example. ![]() And you can start debugging your app very quickly. In the debugging tool window, you can see the call stack and the variables in their current state, evaluate expressions in the editor, and step through the code – read more about that in the How to debug with WebStorm blog post. You can do many things that will help you explore the code and understand where the bug is. You can put breakpoints right in your source code (no more debugger and console.log() statements!), which can be written in JavaScript or TypeScript. If your DevTools window is wide, this pane is displayed to the right of the Editor pane.Ī common method for debugging this type of problem is to insert several console.log() statements into the code and then to inspect values as the script runs.WebStorm makes it easier to debug Node.js apps. This pane provides tools for inspecting the JavaScript for the webpage. After you select a file in the Navigator pane, this pane displays the contents of the file. The Editor pane (in the upper right corner). ![]() Every file that the webpage requests is listed here. The Navigator pane (in the upper left corner). Select the Page tab, and then select the JavaScript file, get-started.js. Or, press Ctrl+Shift+I (Windows, Linux) or Command+Option+I (macOS). To open DevTools, right-click the webpage, and then select Inspect. ![]() The Sources tool is where you debug JavaScript. These tasks include changing CSS, profiling page-load performance, and monitoring network requests. Step 2: Get familiar with the Sources tool UIĭevTools provides several tools for different tasks. Next, go to Step 2: Get familiar with the Sources tool UI to start fixing the addition error that's the bug. The label below the button says 5 + 1 = 51. ![]() For more information, see Browse InPrivate in Microsoft EdgeĬlick Add Number 1 and Number 2. Tip: Open Microsoft Edge in InPrivate Mode, to ensure that Microsoft Edge runs in a clean state. Alternatively you can press and hold Ctrl (for Windows, Linux) or Command (for macOS), and then click the link. To open the webpage, right-click the link and select "Open link in new tab" or "Open link in new Window" on the popup window. Open the demo webpage Get Started Debugging JavaScript in a new window or tab. The first step in debugging is to find a sequence of actions that consistently reproduce a bug. This article teaches you the basic workflow for debugging any JavaScript issue using DevTools. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |