Can I trust Function.prototype.toString to provide a valid javascript function string for user-defined functions?
Do any popular javascript engines differ in how they represent function objects as strings?
I came across this question, but it doesn't seem to address my concerns. I'm more interested in ensuring that the function body remains intact, even if formatting may vary between implementations...
There's also a related question, but it didn't fully answer what I'm looking for.
Considering it's a widely accepted standard, I believe it is indeed safe to use. Most reputable engines support it. This principle is the foundation of my ongoing project called Jscorex. It has demonstrated compatibility across all popular browsers, including older versions like IE6, as well as Node.js. I have been involved in similar endeavors for many years now. :)
One thing to keep in mind is that code evaluated using the eval function will inherit the current scope, while code created with the Function constructor will always have access to the global scope.
function generateClosure() {
var a = 30,
b = 15;
// The function doesn't recognize 'a' and 'b'
var func = new Function("return a + b");
// Evaluates as expected
var output = eval("a + b");
}
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