QJSEngine evaluates JavaScript encounter error

redstoneleo

I don't have much knowledge about JavaScript ,I am using QJSEngine to evaluate this js code snippet here , then error occurs : SyntaxError: Expected token `,' https://bpaste.net/show/be6620300fef anyone can help ?

JKSH

Hi,

Run your JavaScript code through an error checker: http://www.javascriptlint.com/online_lint.php It will show you where the error is.

By the way, it's probably a bad idea to embed such a large piece of JavaScript code inside Python code. Instead, put the JavaScript code inside a separate file, and get your Python code to read the file into a string.

redstoneleo

thanks, although it can show where the error is,but I still found it hard to correct the mistake due to a lack of experience in Js, can you give a help ?

JKSH

@redstoneleo said:

thanks, although it can show where the error is,but I still found it hard to correct the mistake due to a lack of experience in Js, can you give a help ?

I'd be happy to help, but I'd like you to put in some effort yourself first:

Where is the error?
Tell us, what you have tried so far to fix the mistake?

redstoneleo

@JKSH
ok, I turn the code a little bit clear to understand by replacing _, _l, __l with letter i,a,b and so on .

this is the processed code,

https://bpaste.net/show/f60deff86d2b

I am not able to correct the mistake in it due to a lack of experience in Js, but I found the js code is not that hard to rewrite with Python ,so I turn the js code to the corresponding Python code, this is the code

https://bpaste.net/show/2f9b2fe5a333

I hope someone can help me correct the mistake in the js code so I don't need to rewrite it with Python , and so that I can run it and get result directly via QJSEngine.

JKSH

@redstoneleo Actually, there is no mistake in the JavaScript code.

I think you need to put the JavaScript code inside a file, and make your Python code read the file. Don't embed the JavaScript code directly in your Python code.

Anyway, I'm curious: Where did you get this code from?

redstoneleo

@JKSH In fact ,This is a snippet from a JavaScript file loaded by a site,the full code of the JavaScript file is here
https://bpaste.net/show/342572119e02

Since a script is provided to the engine in the form of a string, so I think it doesn't bother here to put the JavaScript code inside a file or not.

"there is no mistake in the JavaScript code", then which caused the error here ?

JKSH

@redstoneleo said:

Since a script is provided to the engine in the form of a string, so I think it doesn't bother here to put the JavaScript code inside a file or not.

I suggest you try it anyway.

"there is no mistake in the JavaScript code", then which caused the error here ?

I don't know. It works with my C++ QJSEngine.

Note that this JavaScript code generates more JavaScript code which finally generates HTML code.

Anyway, try the file first.

redstoneleo

@JKSH someone helped me solve the issue, thanks anyway!
http://www.riverbankcomputing.com/pipermail/pyqt/2015-March/035717.html