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[pure javascript code without the html body]
<script language="Javascript">
    [ creating buttons with the alphabets on it and its values the same]

  for(var a=1;a<=26;a++)
  {
  document.write("<input type='button' size='1' value="+String.fromCharCode(a +64)+" id='btn"+a+"' onclick='see()' >");
  }


document.write("<input type='text' size='10' id='box1' style='background-color:red'>")               

[normal textbox which should contain the data]
    function see()
      {
      [trying to put the value of button on textbox on buttonclick but gives me  undefined]


       var text;
       text=*document.getElementsByTagName*("button").value;
       document.getElementById("box1").value=text;
      }

</script>

我已经尝试过 document.getElementsByTagName 甚至通过 Id 给出未定义的位置，因为我希望按钮的值位于文本框上。我使用了 forloop，因为我必须创建大约 26 个按钮

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1 回答 1

1 
"...value='" + String.fromCharCode(a +64) + "'..."

您缺少单引号。

于 2013-04-24T18:04:57.070 回答