I have a function that receives an array of Strings. These are the names of variables I'm supposed to concat together.
Something like:
function createArray(varNames){
varNames.each( function(varName){
someArray = someArray.concat(varName.items);
});
}
createArray(["array1", "array2"]);
I don't know how to take a string and select the variable named after it. Any way of doing this in Javascript?
Depends of the scope where the variable was defined. If it was defined in the global scope (inside a browser) you could access it via the window object.
For example:
var arr1 = [1,2,3,4,5];
window['arr1']; // 1,2,3,4,5
try window[varName] - drop the .items
for example
function createArray(varNames,theScope){
theScope = theScope || window;
varNames.each( function(varName){
someArray = someArray.concat(theScope[varName]);
});
}
createArray(["array1", "array2"]);
if you have
var array1=[...];
var array2=[...];
or
createArray(["array1", "array2"],myScope);
if you have
var myScope = {
"array1":[...],
"array2":[...],
}
You can pass variables in an array rather than passing a string.
