表单验证

<INPUT id="ou" maxLength="32" size=20 name="ou"
                  title="机构名称"
                   onkeyup="checkou(this);"   onKeyDown="checkou(this);" 
                       onbeforepaste="checkou(this);" style="">

 

 function checkou(aaa){ // aaa.value=aaa.value.replace(/[^a-zA-Z0-9/u4e00-/u9fa5_@/.]/gi,"") aaa.value=aaa.value.replace(/[^a-zA-Z0-9_@/.]/gi,"") var divobj = document.getElementById("div"+aaa.name); if(aaa.value.replace(/[^/x00-/xff]/g,"**").length > 32) { divobj.innerHTML = "<font color=red>X</font>最长为32个字节(16个汉字,32个字母)"; } if(aaa.value.replace(/[^/x00-/xff]/g,"**").length <= 32) { divobj.innerHTML = ""; } }