一个文本框输入10个字符,且只能输入5个汉字
<input type=text name=txt onkeypress="return cc(this);" maxlength="10"> <br />
<input type=button value=ok>
<script language=javascript>
function cc(txtname)
{
var j=0;
var s = txtname.value;
for(var i=0;i<s.length;i++)
{
var temp = s.substr(i,1);
if(temp.length != temp.replace(/[^\x00-\xff]/g,"**").length)
j=j+2;
else
j++;
}
if(j>=10){
alert("长度超过最大范围");
return false;
}
}
</script>现在的问题是:当一直输入汉字时没触发onkeypress()事件,不起作用,,各位高手有没有别的办法呀??
<input type=text name=txt onkeypress="return cc(this);" maxlength="10"> <br />
<input type=button value=ok>
<script language=javascript>
function cc(txtname)
{
var j=0;
var s = txtname.value;
for(var i=0;i<s.length;i++)
{
var temp = s.substr(i,1);
if(temp.length != temp.replace(/[^\x00-\xff]/g,"**").length)
j=j+2;
else
j++;
}
if(j>=10){
alert("长度超过最大范围");
return false;
}
}
</script>现在的问题是:当一直输入汉字时没触发onkeypress()事件,不起作用,,各位高手有没有别的办法呀??
lz 记得结贴哈
同时在input标签里面最好加上value=""
<!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>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="[email protected]" />
<meta name="keywords" content="" />
<meta name="description" content="" />
</head>
<body>
<input type=text name=txt onkeydown="return cc(this);"> <br />
<input type=button value=ok>
<script language=javascript>
function cc(txtname)
{
var deleteKeyCode = 46;
var backspaceKeyCode = 8;
if (event.keyCode != deleteKeyCode && event.keyCode != backspaceKeyCode)
{
var j=0;
var s = txtname.value;
for(var i=0;i<s.length;i++)
{
var temp = s.substr(i,1);
if(temp.length != temp.replace(/[^\x00-\xff]/g,"**").length)
j=j+2;
else
j++;
}
if(j>=10){
alert("长度超过最大范围");
return false;
}
}
}
</script></body>
</html>
http://download.csdn.net/source/308913JScript 语言参考
http://download.csdn.net/source/308916CCS 样式表中文手册
http://download.csdn.net/source/304124
if(event.key==10) return false;
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="[email protected]" />
<meta name="keywords" content="" />
<meta name="description" content="" />
</head>
<body>
<input type=text name=txt onkeydown="return cc(this);"> <br />
<input type=button value=ok>
<script language=javascript>
function cc(txtname)
{
var deleteKeyCode = 46;
var backspaceKeyCode = 8;
//alert("你按的键值是:" + event.keyCode);
//条件:按键不等于shift、home、end,要什么继续加,根据上面的keycode就知道键码了
var w = event.keyCode != 16 && event.keyCode != 35 && event.keyCode != 36;
if (event.keyCode != deleteKeyCode && event.keyCode != backspaceKeyCode && w)
{
var j=0;
var s = txtname.value;
for(var i=0;i<s.length;i++)
{
var temp = s.substr(i,1);
if(temp.length != temp.replace(/[^\x00-\xff]/g,"**").length)
j=j+2;
else
j++;
}
if(j>=10){
alert("长度超过最大范围");
return false;
}
}
}
</script></body>
</html>
可以全选了,lz要什么可以进行在w后加的
w3c oninput,
代码不写了,可以满足你的要求!
就一个文本框,让他输入10个字符。纯汉字就只能是5个。可以从记事本中复制。。谢谢
<script type="text/javascript" >
function checkStr(obj,len){
var str = obj.value;
var ln = str.length;
var len = len;
for(var i=0;i<len;i++){
if(/[\u4e00-\u9fa5]/.test(str.charAt(i))){
len--;
if(ln <= i) break;
}
}
if(ln > len){
str = str.substr(0, len);
}
document.getElementsByName("week")[0].value = str;
}
</script>
刚开会去了,不好意思