Loop Over Array in Javascript [duplicate]
I'm trying to loop over the MoveParts in javascript like this:
for (var movePart in moveResult.MoveParts) { console.log(movePart.From);};I always get undefined instead of the actual value.
Don't use for-in to loop through arrays, that's not what it's for. for-in is for looping through object properties. This answer shows various ways to loop through arrays.
The reason your for-in didn't work is that movePart is the key, not the actual entry, so if you were using an object (not an array!) you would have used moveResult.MoveParts[movePart].From.
Your forEach version only failed because:
It's
forEach, notforeach. Capitalization matters in JavaScript.You were missing the closing
)on the function call.
The answer linked above has full examples of forEach and others, but here's how yours should have looked:
moveResult.MoveParts.forEach(function (movePart) { // Capital E -----------^ console.log(movePart.From); });// ^---- closing )