js为什么老是隐藏不了控件

Question

我用js为什么老是隐藏不了控件啊，写了几种方法都没用：daily_test_question是form标签，myanswer5是个radio，就是我要隐藏的控件1,2,3为3中方法function Dis(){1：var disPlay;disPlay = document.getElementById("myanswer5");disPlay.style.display = "none";2：window.daily_test_question.myanswer5.style.display = "none";3：var disPlay;disPlay = document.getElementById("daily_test_question.myanswer5");disPlay.style.display = "none";}window.onload = Dis();//页面加载时运行到底怎么做才能隐藏控件？

Answer 1

window.onload = Dis;