PUSH 배열 끝에 삽입

<div class="photo">
	<img src="http://placehold.it/100x150"/>
	<img src="http://placehold.it/100x130"/>
	<img src="http://placehold.it/100x120"/>
	<img src="http://placehold.it/100x110"/>
</div>
<script>
var arr = [];
$('.photo img').each( function(){ 
	arr.push($(this).height()); 
});
console.log(arr);
</script>