javascript - 仅在选中较低级别的某些时才选中复选框

Question

如果选中了它下面的复选框，我有这段代码将检查顶级复选框。我还想做的
是取消选中顶级复选框，如果它下面没有选中复选框。我该如何修改这个？

if(this.parentElement == pg.thePart) {

            var terminate = false;
            var counter = 0;
        if(n.className == "myClass") {

                z = n.nextSibling;


                while(z.id == "row" && z.className != "myClass" && !terminate) {
                    z.all[0].checked = 0;
                    z.style.backgroundColor = z.className == "w" ? "ffffff" : "ffffcc";
                    counter++;
                    if(counter > 1000) terminate = true;
                    z = z.nextSibling;
                }
            } else {
                z = n;
                while (z.className != "myClass" && !terminate) {
                    z = z.previousSibling;
                    counter++;
                    if(counter > 1000) terminate = true;
                }
                if(counter > 0 && counter <= 1000) {

                    z.all[0].checked = 1;
                    z.style.backgroundColor = "bad3fc";
                }


            }


        }

Answer 1

您可以测试它下面的那些，如果它们没有被选中，那么使用：

checkbox.checked = false;