I'm trying to return an array from a function and work with its results.
When I just want to get its length, I always get a 0:
function myFunc() {
var arr = [];
arr.push("test");
arr.push("another test");
return arr;
}
alert(myFunc.length) // expected 2, but got 0
You need to call it as myfunc().length because you are calling a function.
Remember you are calling a function, so the parameter list (even if empty) must be given to the call, try:
alert(myFunc().length)
You have to call the function like so
function myFunc() {
var arr = [];
arr.push("test");
arr.push("another test");
return arr;
}
alert(myFunc().length)
Function.length, The length property specifies the number of arguments expected by the function.
And that is the reason you could get 0 in alert as you are reading length property of the function-object
If you are expecting 2, which is length of the array, you need to invoke the function.
function myFunc returns the array in which 2 items are being pushed.
Invoke the function and read the length property of the returned array
function myFunc() {
var arr = [];
arr.push("test");
arr.push("another test");
return arr;
}
alert(myFunc().length);
alert(myFunc().length)