I have the following objects in an array that I would like to loop through that have the same methods.
var myObjects = ['a','b','c'];
How do I loop through this array and call the same method?
a.doThis();
b.doThis();
c.doThis();
1 Answer
You can use an Array.forEach(...) loop to achieve this. It will loop through every object within the array and execute the given function.
var myObjects = ['a', 'b', 'c']
myObjects.forEach(o => o.doThis())
Array.prototype documentation (MDN)
EDIT: As Rob points out, if you are attempting to access actual objects called a, b and c in some context (assuming this context), you can do the following. It will depend on the context of where these objects are actually located. this should work as long as myObjects and your actual objects are defined within the same scope/context.
var myObjects = ['a', 'b', 'c']
myObjects.forEach(o => this[o].doThis())
4 Comments
RobG
I think you missed the point of the question. The OP wants to use the strings as variable names similar to accessing object properties using square bracket notation, something like
variableObj[myObjects[0]].
varbrad
Yeah my bad, wasn't immediately clear.
RobG
You're confusing this with an EnvironmentRecord, which is part of an execution context. A function's this is a parameter of an EnvironmentRecord and has nothing to do with scope or variables.
varbrad
That's why I added the "should work" part, there was no way of knowing in what situation this code is running (a function? globally? lambda/arrow func?).
myObjects.forEach(obj => obj.doThis())javascriptnot included at OP?