CODEWITHSUNDEEP
javascriptpythonprompt
Academia
Academia

Reputation: 4124

Executing a prompt Javascript from Python

I'm using PyV8 to execute Javascript programs from Python. I had a problem executing "document.write", but found the solution here (using Mock Document): Executing Javascript from Python

Now,I'm facing an other problem. I want to execute a prompt command javascript from python. The effect of the result should be like a simple python raw_input. I give an example:

var a, b, c, d;
prompt(a);
c = a
prompt(b);
c = c + b
d = a * b
document.write(c)
document.write(d)

using PyV8, the evaluation of this script should evaluate the first line, stop at prompt(a) asking me to introduce the value of a (DOS line command), then resume the evaluation till next prompt, and so on. Thks in advance.

Upvotes: 2

Views: 1148

Answers (2)

Wladimir Palant
Wladimir Palant

Reputation: 57651

Injecting a Python function into JavaScript context is actually very simple - you assign that function to a local variable via JSContext.locals object:

ctx = PyV8.JSContext()
ctx.enter()
ctx.locals.prompt = raw_input

ctx.eval('var a = prompt("js> ");')

And all the sudden you can use that Python function from JavaScript exactly like you would do it in Python.

I would normally link to the documentation but PyV8 documentation doesn't appear to be available anywhere with the proper MIME type.

Upvotes: 2

jfs
jfs

Reputation: 414149

if there is no prompt() function in PyV8 then you could add it the same way as document object is added in the example you cited.

Upvotes: 1

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