how to solve nan error in javascript

It is mentioned that "Dom is the UTF-8 of the article code, if the JS library is not the separation of independent JS files, but included in the Dom, this problem will not appear. However, the separated JS file is not UTF-8 encoding, is added to the DOM library of UTF-8 encoding, Chinese appears garbled characters, and affect the quotation marks, so that the browser can not judge the end of the string. Solve the transformation method is very simple, J

The original code is as follows: the returned result is returned, but an error is reported on the console, and the historical rollback cannot be performed. The error text is UncaughtSyntaxError: Illegalreturnstatement. What is the problem with the front-end experts, it seems that the href attribute of the link cannot be written as a return expression. Of course, you may not write it like this. You just want

Many Web developers may have encountered such a problem, and the program is inexplicably surprised to see that "the code of the released script cannot be executed", error Row 1, column 1. the descriptions of such messages are confusing, and the descriptions are confusing JS errors. I believe they are the most depressing and hateful thing for all the friends who debug javascript programs! In this case, the s

Inside mentioned "Dom is the UTF-8 of the code, if the JS library is not separate JS file, but included in the DOM, this problem will not appear." However, the separate JS file is not UTF-8 encoding, is Gacou into the UTF-8 encoded DOM, the Chinese appear garbled, and affect the quotation marks, so that the browser can not judge the end of the string. Solve the political reform is very simple, JS file Save as UTF-8 encoding format can be. ” So I modif

Yesterday, when writing a very simple HTML page with some basic JavaScript scripts, it took 1 hours to find out where the error was. Simply give the following similar code to see if you can find the problem there? Look carefully and then find out. There is a semicolon is entered in Chinese mode, and in Notepad, the difference between the two semicolons is not very obvious, especially in the age of the co