I encountered some difficulties when developing the WeChat applet calculator. There is an error that I can't find out, but it seems to be the same as what is written in the video. Please give me some guidance.
For example, enter: "7 7", and the result is It can be displayed as 14 normally, but when the operator " " is clicked for the second time, the console displays an error! I clicked into the source and looked at the erroneous statement, but I couldn't find the error.
I really can’t find the mistake. If you can provide detailed guidance, you can add qq: 1648407902. I don’t know if Q&A can upload multiple pictures at one time.
For the specific js file, please see the attached picture I uploaded! !
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