随着输入文字的多少自动变化宽度的INPUT
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title><script language="javascript">function checkLength(which) { var oTextCount = document.getElementById("char"); iCount = which.value.replace(/[^\u0000-\u00ff]/g,"aa"); oTextCount.innerHTML = "<font color=#FF0000>"+ iCount.length+"</font>"; which.style.border = '1px dotted #FF0000';which.size=iCount.length+2;} </script></head><body><input name="words" size="2" onkeyup="checkLength(this)"/> <span id="char">0</span>个字符</body></html>?