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JavaScript JavaScript Foundations Numbers The Math Object

Posted by orange sky
.a{fill-rule:evenodd;}techdegree
orange sky
Front End Web Development Techdegree Student 4,945 Points

How to pass values and call a function stored in an array?

Hello!

If we can store a function in an array, how do we pass values into it, and how do we invoke this function?

var y = ['a string', 3, true, function(a, b) {return a + b;}]

5 Answers

Ethan Ferrari
Ethan Ferrari
3,017 Points
Ethan Ferrari
Ethan Ferrari
3,017 Points

Ha, made that harder than it was. Don't code in bed. Here:

var myFunc = y[3];
myFunc(2,3);
//returns 5
Ethan Ferrari
Ethan Ferrari
3,017 Points
Ethan Ferrari
Ethan Ferrari
3,017 Points

Try:

var myFunction = y[2]; myFunction.apply($someObject, [my,passed,arguments]);

I'm on the iPad now so can run it in he console... Let me know if that does the trick.

orange sky
seal-mask
.a{fill-rule:evenodd;}techdegree
orange sky
Front End Web Development Techdegree Student 4,945 Points
orange sky
.a{fill-rule:evenodd;}techdegree
orange sky
Front End Web Development Techdegree Student 4,945 Points

Hello Ethan,

var y = ['a string', 3,true, function(a,b){return a +b}]

You got me there, Im lost. I think my function stored in the array position 3 should receive 2 numbers into its parameters so that it can return the sum of these 2 numbers.

Not sure:)

ixrevo
ixrevo
32,051 Points
ixrevo
ixrevo
32,051 Points

You also can call a function directly from an array like this:

var y = ['a string', 3, true, function(a, b) {return a + b;}]

y[3](1,2);
orange sky
seal-mask
.a{fill-rule:evenodd;}techdegree
orange sky
Front End Web Development Techdegree Student 4,945 Points
orange sky
.a{fill-rule:evenodd;}techdegree
orange sky
Front End Web Development Techdegree Student 4,945 Points

thanks a million guys!! Now, I totally got it!!