javascript怎样将一个checkbox设为无效,假设该checkbox的id为checkAll ( ) A. document.getElementById("checkAll").enabled = false; B. document.getElementById("checkAll").disabled = true; C. document.getElementById("checkAll").enabled = true; D. document.getElementById("checkAll").disabled = ...
javascript 怎样将一个 checkbox 设为无效,假设该 checkbox 的 id 为 checkAll。A. document.getElementById("checkAll").enabled = false; B. document.getElementById("checkAll").disabled = true; C. document.getElementById("checkAll").enabled = true; D. document.getElementById("check...