javascript 隐藏/显示指定的区域附HTML元素【legend】用法

javascript code: 代码 代码如下: function expandOther(el, el2) { whichEl = document.getElementById(el) button = document.getElementById(el2) if (whichEl.style.display == ‘none’) { whichEl.style.display = ”; button.value = “隱藏”; } else { whichEl.style.display = ‘none’; button.value = “顯示”; } expandOther(e