Using a string as a function name

[Euperia]

Hi

I would like to use a string from an array to call a function. For
example, I have a list of functions called A.B,C,D etc and for various
situations I need to call a a different range of functions:

var myFunctions = ["A","C","G","B","E"];

for (i = 0; i < myFunctions.length; i++) {
errorcode = myFunctions(); // I want to call A(); B() etc
}


Is it possible with Javascript, and if so, how?

Regards
Andrew

 

[Steve van Dongen]

Hi

I would like to use a string from an array to call a function. For
example, I have a list of functions called A.B,C,D etc and for various
situations I need to call a a different range of functions:

var myFunctions = ["A","C","G","B","E"];

Change this line to
var myFunctions = [A,C,G,B,E];
so that you have an array of function references instead of an array
of strings.

for (i = 0; i < myFunctions.length; i++) {
errorcode = myFunctions(); // I want to call A(); B() etc
}


Is it possible with Javascript, and if so, how?

Regards,
Steve

 

[Douglas Crockford]

I would like to use a string from an array to call a function. For

example, I have a list of functions called A.B,C,D etc and for various
situations I need to call a a different range of functions:

var myFunctions = ["A","C","G","B","E"];

for (i = 0; i < myFunctions.length; i++) {
errorcode = myFunctions(); // I want to call A(); B() etc
}

Functions are values. You can use myFunctions to store the functions themselves,
not just their names.

var myFunctions = [A, C, G, B, E];

This assumes that function A et al have been defined.

You could go a step further and define the functions in the array literal.

var myFunctions = [function A() {
...
}, function C() {
...
}, function G() {
...
}, function B() {
...
}, function E() {
...
}];

http://www.crockford.com/

 

[Vjekoslav Begovic]

Hi

I would like to use a string from an array to call a function. For
example, I have a list of functions called A.B,C,D etc and for various
situations I need to call a a different range of functions:

var myFunctions = ["A","C","G","B","E"];

for (i = 0; i < myFunctions.length; i++) {
errorcode = myFunctions(); // I want to call A(); B() etc

for (i = 0; i < myFunctions.length; i++) {
errorcode = window[myFunctions]();
}