如何禁用IntelliJ IDE/WebStorm自动添加字符？解决JS文件自动加+问题

I’ve dealt with this exact frustrating quirk before—nothing throws off your coding flow like an unexpected + popping up mid-type. Here’s how to turn it off for good:

• Open the Settings/Preferences window:
  • Windows/Linux: Go to File > Settings
  • macOS: Go to IntelliJ IDEA/WebStorm > Preferences
• In the left sidebar, navigate to Editor > General > Smart Keys
• Scroll down until you see the JavaScript section (expand it if it’s collapsed)
• Look for the option called "Insert '+' on typing '+' in an expression"—this is the setting causing the unwanted auto-added +
• Uncheck that box, hit Apply then OK, and you’re all set.

If you still run into similar auto-insert issues down the line, double-check the Editor > Code Style > JavaScript settings, but this one’s almost always the fix for the random + problem.

内容的提问来源于stack exchange，提问作者Alireza Mansoori