Get value and text of selected checkboxes

I am trying to get an array of selected checkboxes values and text on button click

<input type="checkbox" name="checkbox[]" value="1" /><label>text1</label>
<input type="checkbox" name="checkbox[]" value="2" /><label>text2</label>
<input type="checkbox" name="checkbox[]" value="3" /><label>text3</label>
<input type="checkbox" name="checkbox[]" value="4" /><label>text4</label>

I'm getting values of the checkboxes but how to get text also in array

var checkboxes = document.getElementsByName('checkbox[]');
var vals = 0;
for (var i=0, n=checkboxes.length;i<n;i++) {
    if (checkboxes[i].checked) {
        vals += ","+checkboxes[i].value;
    }
}

Thank you!