want to achieve a function to upload a xlsx file and then parse it to an array, store it in the database, and then display it in table. It is best to have a demo instance. Thank you! ...
what are the benefits of being familiar with the prototype chain in actual development? what are the benefits of object-oriented implementation and direct implementation ...
take a look at the prototype and just add an attribute to the object. If the object needs this property, can t you just add it at the beginning of creation? If you need this property for an instance, you might as well refine the subclass and add the att...
1. I am working on an app project, and there are many onclick events in the project. I have an idea to use the touch event instead, because there are a lot of things that need to be modified. I wonder if it can be easily implemented, binding an implem...
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Mini Program npm is only supported from the 2.2.1 version library, so if the version library below 2.2.1 is opened, the error will be reported directly? ...
now the demand is that the secondary page of the main page that clicks to jump also has the bottom navigation of the main page, that is, the bottom navigation remains unchanged and the central body changes ....
can webpack be packaged directly into GBK format? How to configure it if possible ...
in js, there is a number 12345678901234.123456. The result can only display 12345678901234.123. is truncated when it is formatted. +12345678901234.123456; 12345678901234.123 (12345678901234.123456).toString(); 12345678901234.123 I wonder if th...