怎样判断一个form中输入的文本是实数? <input onblur="if(!/^(-|\+)?\d+(\.\d+)?$/.test(value))alert('你输入的不是实数')"> 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <input onblur="if(!mm(value))focus();"><SCRIPT LANGUAGE="JavaScript">function mm(s){ s = s.replace(/^\s+|\s+$/,''); if(s == "") return true; if(/^(-|\+)?\d+(\.\d{1,2})?$/.test(s)) return true; alert('你输入的不是实数!'); return false;}</SCRIPT> 以前做的一个项目里写的现在请大家一起来批批了=======================================================<PUBLIC:COMPONENT> <PUBLIC:ATTACH event="onkeyup" handler="okeyup" /> <SCRIPT language="javascript"> function okeyup(){ var cls = this.className; var val=""; var ecode = event.keyCode; if(ecode == 8 || ecode == 46){} // 不判断按下的键是 "backspace,delete" else{ if(ecode >= 37 && ecode <=40){} // 不判断按下的键是 "↑,↓,←, →" else{ switch(cls) { case "floatcss": //正浮点数 if(/[^0-9\.\%]/gi.test(this.value)) this.value = this.value.replace(/[^0-9\.\%]/gi, ''); val = this.value; var ary = val.split('.'); //禁止有第二个小数点输入 if(ary.length > 2) this.value = val.substring(0, val.length-1) val = this.value; var aryN = val.split('%'); if(aryN.length > 2) this.value = val.substring(0, val.length-1) break; case "nfloatcss": //负浮点数 (包括正) if(/[^0-9\-\.]/gi.test(this.value)) this.value=this.value.replace(/[^0-9\-\.]/gi, ''); val = this.value; var ary = val.split('.'); if(ary.length > 2) this.value = val.substring(0, val.length-1) val = this.value; var aryN = val.split('-'); //禁止有第二个负号输入 if(aryN[0] != "") this.value = aryN.join(''); if(aryN.length > 2) this.value = "-" + aryN.join('') break; case "intcss": //正整数 if(/[^0-9]/gi.test(this.value)) this.value=this.value.replace(/[^0-9]/gi, ''); break; case "nintcss": //负整数 (包括负) if(/[^0-9\-]/gi.test(this.value)) this.value=this.value.replace(/[^0-9\-]/gi, ''); val = this.value; var aryN = val.split('-'); if(aryN[0] != "" ) this.value = aryN.join(''); if(aryN.length > 2) this.value = "-" + aryN.join('') break; } } }}</SCRIPT> </PUBLIC:COMPONENT> jquery弹出层播放视频 新手入门,请大家帮忙找个错 请问该怎么遍历json格式的arrayList? 求助 JavaScript编码问题 document.all 为空错误 验证问题! 文字选中问题document.selection 如何在一个htm文件里的javascript程序中调用另一个js文件的函数,并传递参数 ? 急,我想用Javascript 实现多个选择的对话框,即含有YES和Nod 求: 图片在窗口上飘动的代码。 急。。
<SCRIPT LANGUAGE="JavaScript">
function mm(s)
{
s = s.replace(/^\s+|\s+$/,'');
if(s == "") return true;
if(/^(-|\+)?\d+(\.\d{1,2})?$/.test(s)) return true;
alert('你输入的不是实数!');
return false;
}
</SCRIPT>
现在请大家一起来批批了
=======================================================
<PUBLIC:COMPONENT>
<PUBLIC:ATTACH event="onkeyup" handler="okeyup" />
<SCRIPT language="javascript">
function okeyup()
{
var cls = this.className;
var val="";
var ecode = event.keyCode;
if(ecode == 8 || ecode == 46){} // 不判断按下的键是 "backspace,delete"
else{
if(ecode >= 37 && ecode <=40){} // 不判断按下的键是 "↑,↓,←, →"
else{
switch(cls)
{
case "floatcss": //正浮点数
if(/[^0-9\.\%]/gi.test(this.value))
this.value = this.value.replace(/[^0-9\.\%]/gi, '');
val = this.value;
var ary = val.split('.'); //禁止有第二个小数点输入
if(ary.length > 2)
this.value = val.substring(0, val.length-1)
val = this.value;
var aryN = val.split('%');
if(aryN.length > 2)
this.value = val.substring(0, val.length-1)
break;
case "nfloatcss": //负浮点数 (包括正)
if(/[^0-9\-\.]/gi.test(this.value))
this.value=this.value.replace(/[^0-9\-\.]/gi, '');
val = this.value;
var ary = val.split('.');
if(ary.length > 2)
this.value = val.substring(0, val.length-1)
val = this.value;
var aryN = val.split('-'); //禁止有第二个负号输入
if(aryN[0] != "")
this.value = aryN.join('');
if(aryN.length > 2)
this.value = "-" + aryN.join('')
break;
case "intcss": //正整数
if(/[^0-9]/gi.test(this.value))
this.value=this.value.replace(/[^0-9]/gi, '');
break;
case "nintcss": //负整数 (包括负)
if(/[^0-9\-]/gi.test(this.value))
this.value=this.value.replace(/[^0-9\-]/gi, '');
val = this.value;
var aryN = val.split('-');
if(aryN[0] != "" )
this.value = aryN.join('');
if(aryN.length > 2)
this.value = "-" + aryN.join('')
break;
}
}
}
}
</SCRIPT>
</PUBLIC:COMPONENT>