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What does the [0] mean? Also is there a reference/manual that i can use to prevent asking simple questions like this..
var height = $('.string-parent-container')[0].scrollHeight;
$('.string-parent-container').scrollTop(height);
It means the first element that matches
$('.string-parent-container')$('.string-parent-container')returns a collection of elements with the classstring-parent-container. And[0]is the first element that has this class.