十万火急!!!

楼上的朋友,是SELECT,不好意思太急了,弄错了,!!!

解决方案 »

  1.   

    <select><option>abc<option>def<option>efg</select>
    <button onclick="document.getElementsByTagName('select')[0].options.length=0">clear</button>
      

  2.   

    innerHTML也可以的
     <select><option>abc<option>def<option>efg</select>
    <button onclick="document.getElementsByTagName('select')[0].innerHTML=''">clear</button> 
      

  3.   

    呵呵，还有什么稀奇古怪方法都贴出来呀。我先来3个：<BODY>
    <select><option>abc<option>def<option>efg</select>
    <button onclick="document.getElementsByTagName('select')[0].outerHTML='<select></select>'">clear</button>
    <BR><BR>
    <select><option>abc<option>def<option>efg</select>
    <button onclick="document.getElementsByTagName('select')[1].replaceNode(document.createElement('<select></select>'))">clear</button>
    <BR><BR>
    <select><option>abc<option>def<option>efg</select>
    <button onclick="with(document.getElementsByTagName('select')[2]){while (length>0) removeChild(lastChild)}">clear</button></BODY>