To view documentation for a symbol at caret
Press Ctrl+Q or select Documentation popup.from the main menu. The reference for the symbol is shown in the
For a project symbol or for a symbol from the project dependencies, IntelliJ IDEA generates the documentation from the corresponding JSDoc comment.
If no comment is found in the d.ts files, IntelliJ IDEA shows a summary from the corresponding MDN article.
To view the MDN documentation for a symbol at caret
In the Documentation popup (Ctrl+Q), click the link at the bottom:
Press Shift+F1 or selectfrom the main menu.
Position the cursor at the symbol in question and press Shift+F1 or chooseon the main menu.
To view documentation for an npm package
In a package.json file or in a
importstatement, position the cursor at the name of the package and press Ctrl+Q
To open the documentation on the npm official website in the browser, press Shift+F1.
To view reference in a tool window
Pin the Documentation popup. It turns into the Documentation tool window, with the corresponding sidebar icon and more controls.
To show documentation automatically
In the Settings/Preferences dialog (Ctrl+Alt+S), click General under Editor, then click Code Completion. The Code Completion page opens.
Select the Show the documentation popup checkbox and specify the elapsed time.
To change the font size of quick documentation, do one of the following:
Click in the upper-right corner of the quick documentation window, and move the slider.
In the Settings/Preferences dialog (Ctrl+Alt+S), click General under Editor and select the Change font size (Zoom) with Ctrl+Mouse Wheel checkbox.