例如我有一个文本框,我输入12000,我希望它在文本框中看起来像12,000我该怎么做?我用html做文本框
答案 0 :(得分:10)
尝试this
之类的内容function addCommas(nStr)
{
nStr += '';
x = nStr.split('.');
x1 = x[0];
x2 = x.length > 1 ? '.' + x[1] : '';
var rgx = /(\d+)(\d{3})/;
while (rgx.test(x1)) {
x1 = x1.replace(rgx, '$1' + ',' + '$2');
}
return x1 + x2;
}
然后在你的文本框上使用它
<input type="text" id="txtBox" onchange="return addCommas(this.value)" />
希望有所帮助
答案 1 :(得分:7)
使用jQuery autoNumeric plugin:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Input with separator</title>
<script type="text/javascript" src="jquery-1.11.0.js"></script>
<script type="text/javascript" src="autoNumeric.js"></script>
<script type="text/javascript">
$( document ).ready( function() {
$("#myinput").autoNumeric(
'init', {aSep: ',', mDec: '0', vMax: '99999999999999999999999999'}
);
});
</script>
</head>
<body>
<input id="myinput" name="myinput" type="text" />
</body>
</html>
答案 2 :(得分:3)
这可能是一个坏主意......
<!doctype html>
<html lang="en">
<head>
<meta charset= "utf-8">
<title>Comma Thousands Input</title>
<style>
label, input, button{font-size:1.25em}
</style>
<script>
// insert commas as thousands separators
function addCommas(n){
var rx= /(\d+)(\d{3})/;
return String(n).replace(/^\d+/, function(w){
while(rx.test(w)){
w= w.replace(rx, '$1,$2');
}
return w;
});
}
// return integers and decimal numbers from input
// optionally truncates decimals- does not 'round' input
function validDigits(n, dec){
n= n.replace(/[^\d\.]+/g, '');
var ax1= n.indexOf('.'), ax2= -1;
if(ax1!= -1){
++ax1;
ax2= n.indexOf('.', ax1);
if(ax2> ax1) n= n.substring(0, ax2);
if(typeof dec=== 'number') n= n.substring(0, ax1+dec);
}
return n;
}
window.onload= function(){
var n1= document.getElementById('number1'),
n2= document.getElementById('number2');
n1.value=n2.value='';
n1.onkeyup= n1.onchange=n2.onkeyup=n2.onchange= function(e){
e=e|| window.event;
var who=e.target || e.srcElement,temp;
if(who.id==='number2') temp= validDigits(who.value,2);
else temp= validDigits(who.value);
who.value= addCommas(temp);
}
n1.onblur= n2.onblur= function(){
var temp=parseFloat(validDigits(n1.value)),
temp2=parseFloat(validDigits(n2.value));
if(temp)n1.value=addCommas(temp);
if(temp2)n2.value=addCommas(temp2.toFixed(2));
}
}
</script>
</head>
<body>
<h1>Input Thousands Commas</h1>
<div>
<p>
<label> Any number <input id="number1" value=""></label>
<label>2 decimal places <input id="number2" value=""></label>
</p></div>
</body>
</html>
答案 3 :(得分:2)
您可以使用Javascript Mask API
答案 4 :(得分:2)
对于用户输入,我建议不要格式化值以包含逗号。处理整数值(12000)要比提交的字符串值(12,000)容易得多。
但是如果您确定要格式化值,那么正如@achusonline建议的那样,我会屏蔽该值。这是一个jQuery插件,可以获得这个结果:
答案 5 :(得分:0)
您可以尝试使用此简单的Javascript
<script type="text/javascript">
function addcommas(x) {
//remove commas
retVal = x ? parseFloat(x.replace(/,/g, '')) : 0;
//apply formatting
return retVal.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
</script>
HTML代码
<div class="form-group">
<label>Amount </label>
<input type="text" name="amount" onkeyup="this.value=addcommas(this.value);"class="form-control" required="">
</div>