javascript: object property is array, but append isn't working

Question

var objs = {
   'prop': []
}
objs['prop'].append('q');

Error: TypeError: objs.prop.append is not a function

Why this code is not working ?
Why console.log(typeof(objs['prop'])); is object not array ?

Answer 1

Array.push :

var objs = {
   'prop': []
}
objs['prop'].append('q');

should be:

var objs = {
   'prop': []
}
objs['prop'].push('q');

Answer 2

Because there are no associative arrays in JavaScript, an associative array is actually an Object. Nothing more nothing less.