function commafy(oInput){ var re=/(-?\d+)(\d{3})/ var num = oInput.value.replace(/,/g,""); while(re.test(num)){ num=num.replace(re,"$1,$2") } oInput.value=num } //这段代码没有转成XX.XX,只是做到了千分位分割,我需要每次转换后光标在.前面,只有输入.号时,才会出现小数点后面的值
JS能做到这个吗?我用ASP.NET的文本框控件能够做到这个. JS好像做不到吧?
ext中的NumberField可以实现你说的这种功能,你可以参考一下这里面的代码!
/** * @param o 文本框对象 * @param n 保留几位小数 */ function fixNumber(o,n){ if(o.value==""||isNaN(o.value)||o.value==Infinity){ o.value=parseFloat("0").toFixed(n); }else{ o.value=parseFloat(o.value).toFixed(n); } }; html中 <input type="text" onkeyup="fixNumber(this,2)"/>
function commafy(oInput){
var re=/(-?\d+)(\d{3})/
var num = oInput.value.replace(/,/g,"");
while(re.test(num)){
num=num.replace(re,"$1,$2")
}
oInput.value=num
}
//这段代码没有转成XX.XX,只是做到了千分位分割,我需要每次转换后光标在.前面,只有输入.号时,才会出现小数点后面的值
JS能做到这个吗?我用ASP.NET的文本框控件能够做到这个.
JS好像做不到吧?
/**
* @param o 文本框对象
* @param n 保留几位小数
*/
function fixNumber(o,n){
if(o.value==""||isNaN(o.value)||o.value==Infinity){
o.value=parseFloat("0").toFixed(n);
}else{
o.value=parseFloat(o.value).toFixed(n);
}
};
html中
<input type="text" onkeyup="fixNumber(this,2)"/>
onkeydown里面判断。如果不是数字,就return false;
忘记是不是这样了。
<head>
<script language="javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.min.js" ></script>
<script language="javascript">
$(document).ready(function(){
$("#textId").keypress(function(event){
if(event.keyCode&&(event.keyCode<48||event.keyCode>57)){
if(event.keyCode == 46&&!/\./.test($(this).val())){
var currentVal = $(this).val();
if(!isNaN(parseInt(currentVal))){
$(this).val(currentVal+".");
}
else{
$(this).val("0.");
}
}
event.preventDefault();
}
}).blur(function(){
var the_Val = parseFloat($(this).val());
if(!isNaN(the_Val)){
if(!/\./.test($(this).val())){
$(this).val(the_Val+".00");
}
else{
$(this).val(the_Val.toFixed(2));
}
}
});
});
</script>
</head>
<body>
<input type="text" id="textId" ></input>
</body>
</html>功能:
只能输入数字和小数点;
若一开始就输入小数点,则默认个位上的数为0,即 0. ;
小数点仅能输入一次,不输入则默认为xx.00
<head>
<script language="javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.min.js" ></script>
<script language="javascript">
$(document).ready(function(){
//千分位处理函数
var departNum = function(textVal,the_other){
var the_array = [];
var i = 0;
the_array.push(textVal.slice(textVal.length-2,textVal.length));
for(i=textVal.length-5;i>=0;i-=3){
the_array.push(textVal.slice(i,i+3));
}
if(0-i<3){the_array.push(textVal.slice(0,3+i));}
for(var k=the_array.length-1;k>=0;k--){
the_other.push(the_array[k]);
}
}
//输入限制
$("#textId").keypress(function(event){
var current = $(this).val();
if(event.keyCode&&(event.keyCode<45||(event.keyCode>45&&event.keyCode<48)||event.keyCode>57)){
if(event.keyCode == 46&&!/\./.test(current)){
if(!isNaN(parseInt($(this).val().replace(/,/,"")))){
$(this).val(current+".");
}
else{
$(this).val("0.");
}
}
event.preventDefault();
}
else{
if(event.keyCode == 45&&(/-/.test(current)||/\d/.test(current))){event.preventDefault();}
else{
if(!/\./.test(current)){
var the_new = $(this).val().replace(/,/g,"");
var theArray = [];
var theFlag = "";
if(/-/.test(current)){theFlag = the_new.slice(0,1);the_new = the_new.slice(1);}
if(parseInt(the_new) >= 100){
departNum(the_new,theArray);
$(this).val(theFlag+theArray.join(","));
}
}
}
}
}).blur(function(){
var the_Val = $(this).val().replace(/,/g,"");
if(!isNaN(parseFloat(the_Val))){
if(!/\./.test(the_Val)){
var theArray = [];
var theFlag = "";
var the_one = the_Val.slice(-1);
var the_new = the_Val.replace(/\d$/,"");
if(/-/.test(the_Val)){theFlag = the_new.slice(0,1);the_new = the_new.slice(1);}
if(parseInt(the_new) >= 100){
departNum(the_new,theArray);
$(this).val(theFlag+theArray.join(",")+the_one+".00");
}
else{
$(this).val(the_Val+".00");
}
}
else{
var theArray = [];
var theFlag = "";
var the_now = parseFloat(the_Val).toFixed(2);
var the_nowStr = String(the_now).slice(-4);
var the_new = String(the_now).replace(/\d\.\d\d/,"");
if(/-/.test(the_Val)){theFlag = the_new.slice(0,1);the_new = the_new.slice(1);}
if(parseInt(the_new) >= 100){
departNum(the_new,theArray);
$(this).val(theFlag+theArray.join(",")+the_nowStr);
}
else{
$(this).val(String(the_now));
}
}
}
});
});
</script>
</head>
<body>
<input type="text" id="textId" ></input>
</body>
</html>
作了些修改,可以实现千分位逗号区分和输入负数
非常感谢CLinHF,经过测试,有2点小小的瑕疵外,基本符合要求
1.负号只能第一个字母输入,用户如果输入到一半才发现应该是负数,则需要全部删除重新输入,对用户来说肯定会有点不满意的。
2.只有失去焦点的时候才进行小数的判断和补充,是否可以做到和千分位一样每一次按键都进行格式化并返回,光标默认在小数点前面,当按下小数点符号后输入的数字自动替换小数点后的数字。===========================
(第二个只是我了解的最理想状态,很可能是因为控件的原因。第一个还是比较重要的,希望可以继续完善下)
<head>
<script language="javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.min.js" ></script>
<script language="javascript">
$(document).ready(function(){
//千分位处理函数
var departNum = function(textVal,the_other){
var the_array = [];
var i = 0;
the_array.push(textVal.slice(textVal.length-2,textVal.length));
for(i=textVal.length-5;i>=0;i-=3){
the_array.push(textVal.slice(i,i+3));
}
if(0-i<3){the_array.push(textVal.slice(0,3+i));}
for(var k=the_array.length-1;k>=0;k--){
the_other.push(the_array[k]);
}
}
//输入限制
$("#textId").keypress(function(event){
var current = $(this).val();
if(event.keyCode&&(event.keyCode<45||(event.keyCode>45&&event.keyCode<48)||event.keyCode>57)){
if(event.keyCode == 46&&!/\./.test(current)){
if(!isNaN(parseInt($(this).val().replace(/,/,"")))){
$(this).val(current+".");
}
else{
$(this).val($(this).val()+"0.");
}
}
event.preventDefault();
}
else{
if(event.keyCode == 45&&/-/.test(current)){event.preventDefault();}
else if(event.keyCode != 45){
if(!/\./.test(current)){
var the_new = $(this).val().replace(/,/g,"");
var theArray = [];
var theFlag = "";
if(/-/.test(current)){theFlag = the_new.slice(0,1);the_new = the_new.slice(1);}
if(parseInt(the_new) >= 100){
departNum(the_new,theArray);
$(this).val(theFlag+theArray.join(","));
}
}
}
}
})
.keyup(function(event){
if(event.keyCode == 109&&$(this).val().slice(0,1) != "-"){
var the_Real = $(this).val();
$(this).val(the_Real.replace(/-/,""));
}
})
.blur(function(){
var the_Val = $(this).val().replace(/,/g,"");
if(!isNaN(parseFloat(the_Val))){
if(!/\./.test(the_Val)){
var theArray = [];
var theFlag = "";
var the_one = the_Val.slice(-1);
var the_new = the_Val.replace(/\d$/,"");
if(/-/.test(the_Val)){theFlag = the_new.slice(0,1);the_new = the_new.slice(1);}
if(parseInt(the_new) >= 100){
departNum(the_new,theArray);
$(this).val(theFlag+theArray.join(",")+the_one+".00");
}
else{
$(this).val(the_Val+".00");
}
}
else{
var theArray = [];
var theFlag = "";
var the_now = parseFloat(the_Val).toFixed(2);
var the_nowStr = String(the_now).slice(-4);
var the_new = String(the_now).replace(/\d\.\d\d/,"");
if(/-/.test(the_Val)){theFlag = the_new.slice(0,1);the_new = the_new.slice(1);}
if(parseInt(the_new) >= 100){
departNum(the_new,theArray);
$(this).val(theFlag+theArray.join(",")+the_nowStr);
}
else{
$(this).val(String(the_now));
}
}
}
});
});
</script>
</head>
<body>
<input type="text" id="textId" ></input>
</body>
</html>因为现在比较忙,所以对于你的第二个要求:
等有时间,再进行完善!
<SCRIPT LANGUAGE="JavaScript">
<!--
function checkinp(oInput){
var reg = /^\-?([\d\,]+\.?\d{0,2}?)?$/;
var num = oInput.value;
/* 取光标位置 */
var s = document.selection.createRange();
var r = oInput.createTextRange();
s.setEndPoint( "StartToStart",r);
var curP = s.text.length;
if (!reg.test(num)) {
if (curP <= num.indexOf(".")+1 || /\.(\D|\d\D)/.test(num)) {
oInput.value = num.substring(0,curP-1) + num.substring(curP,num.length);
if (curP != num.indexOf(".")+1) curP -= 1;
}
else oInput.value = num.substring(0,num.length-1);
}
else {
if (oInput.value=="-") return;
num = num.replace(/,/g,"");
num = parseFloat(num).toFixed(2);
var re = /(-?\d+)(\d{3})/;
while(re.test(num)){
num = num.replace(re,"$1,$2")
}
oInput.value=num;
if(curP <= num.indexOf(".") ) curP = num.indexOf(".");
}
//恢复光标位置
r.moveStart( 'character',curP);
r.collapse(true);
r.select();
}
//-->
</SCRIPT>
不想闪烁的话就得像12楼那样onkeypress,然后判断keycode……
一直按住,就没有onkeyup,就不执行函数了……
还是得用onkeypress啊…… <INPUT TYPE="text" style="ime-mode:disabled" onkeydown="if(event.repeat)event.returnValue=false;//屏蔽连按" onkeypress="initPrice(this)" onblur="checkinp(this)">
<SCRIPT LANGUAGE="JavaScript">
<!--
function initPrice(oInput){
var num = oInput.value;
/* 取光标位置 */
var s = document.selection.createRange();
var r = oInput.createTextRange();
s.setEndPoint( "StartToStart",r);
var curP = s.text.length; num = num.substring(0,curP) + String.fromCharCode(event.keyCode) + num.substring(curP);
var reg = /^\-?([\d\,]*\.?\d{0,3}?)?$/;
// 0~9:48~57; \,:44; \-:45; \.:46;
if ( event.keyCode<44 || event.keyCode>57 || event.keyCode==47 || !reg.test(num) ) {
if (event.keyCode==46) curP = num.indexOf(".")+1;
event.returnValue = false;
}
else {
curP += 1;
if (num=="-") return;
if (/\.\d{3}$/.test(num)) num = num.substring(0,num.length-1);
event.returnValue = false;
num = num.replace(/,/g,"");
num = parseFloat(num).toFixed(2);
var re = /(-?\d+)(\d{3})/;
while(re.test(num)){
num = num.replace(re,"$1,$2")
}
oInput.value=num;
if(num.indexOf(".")>0 && curP <= num.indexOf(".") ) curP = num.indexOf(".");
}
//恢复光标位置
r.moveStart( 'character',curP);
r.collapse(true);
r.select();
}
function checkinp(obj){
var num = obj.value.replace(/,/g,"");
num = parseFloat(num).toFixed(2);
var re = /(-?\d+)(\d{3})/;
while(re.test(num)){
num = num.replace(re,"$1,$2")
}
obj.value=num;
}
//-->
</SCRIPT>
还有不支持火狐浏览器。
还有“CLinHF”的方法也不支持火狐浏览器。