个回答

• lymo

  2015-03-01 10:44:24

  已采纳

  相当于id＝“XXX”的value : 

  <input type="button" id="btn" value="click" />

  document.getElementById("btn").value = click!

  0

• menghuanbaolei

  2015-03-01 11:30:15

  获取document.getElementById("xxx")的值

  0