Jquery UL LI元素，$ .each到数组

Can't figure out what this isn't working right. Trying to get each button_select_sub li's text and put it in an array. Its being built to find the #button_groupings children like it is, cause the functionality behind it is based on the notion that there will be multiple instances of the HTML below. The problem I am having right now is, not so much as it getting the text from each, but however its pushing it into the array is making the array just 1 item, not multiple items.Can't figure out what this isn't working right.