lets say I have array of functions such as [ function f1{}, function f2{}] and I know that the function I want to get a reference too is called "f2", so that I can remove it from the array, how would I go about it? I tried using the object that contains an array like
ctrl.$parsers["f2"] but it does not return anything. Is this possible?
You could iterate over the array and inspect the function's name attribute:
function getNamedFunction(arr, name) {
for (var i = 0, l = arr.length; i < l; i++) {
if (arr[i].name === name) {
return arr[i];
}
}
}
But Function#name is not a standard property:
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
A better (more compatible) approach would be to store your functions in an object:
var functions = {
'f1': f1,
'f2': f2,
};
and access it with
functions['f1']
You could use the filter method of the Array to select functions with a specific name
var myFunctions = [
function a(){ alert(1); },
function b(){ alert(2); },
function c(){ alert(3); }
];
var someName = 'c'; // name of function to search for
// filter array checking the name property of each function in the array
var someFunction = myFunctions.filter(function(f){
return f.name == someName;
})[0]; // get the first function from the resulting filtered array
someFunction(); // alerts '3'
Use the name prop and try this
for (var i=0;i<arr.length;i++)
{
if (arr[i].name=='f2')....
}
Later you can use splice to remove the element.
array.splice(index, 1); ( returns the same array instance)
p.s.
This feature is non-standard
So what can you do ?
you can do this :
var g=[function f2(){},function f4(){}];
for (var i=0;i<g.length;i++)
{
var m=g[i].toString().match(/function\s+(\w+)/i);
if (m && m[1]=='f4') alert(i);
}
