How can I call the following?
var ccall="search.clearMultiSelect";
I have tried the following:
window[ccall]();ccall();Both didn't work (and I get why). I was able to achieve it by eval but is there any other way without using eval?
I cannot split the string or manipulate the string, except for adding something at the beginning or end.
Basically the server, in it's response, contains the name of the function to execute on success of an operation, which in this case is as above.
window[ccall]() wouldn't work because window doesn't contain a function by the name "search.clearMultiSelect". If you can use split, try something like:
window[ccall.split('.')[0]][ccall.split('.')[1]]();
For a function of depth greater than 2, you can loop through the split('.') array:
var f = window;
var ccallArray = ccall.split('.');
for (var i = 0; i < ccallArray.length; i++){
f = f[ccallArray[i]];
}
f();
You must have a finite number of functions to call.
To protect against eval issues, you could manually do:
if (ccall == "search.func1") func1();
else if (ccall == "search.func2") func2();
else if ....
Not a very exciting answer, but it should work and avoid an eval.
This also decouples your client and sever.
The server can send back search.func1 while the client decides to respond by calling newfunc1() or vice versa.
switch instead of ifs.You could split the string along the '.' and then use repeated lookups with [].
You can use eval().
Here is a little example :
var myFunction = "alert('test');";
eval(myFunction);
Here is a link to test the example above:
eval. What you're doing here will suffer from injection attacks no matter what method you use.