求js正则表达式:
要求。比如用户输入一些不确定的数字0.500,12.0,365.00,236.58400 ,100.00,153.0400。
我现在要去掉数据后面无效的0.如果是整数则保留整数(比如365.00 保留为356)
通过了就马上结贴。分不多。50
要求。比如用户输入一些不确定的数字0.500,12.0,365.00,236.58400 ,100.00,153.0400。
我现在要去掉数据后面无效的0.如果是整数则保留整数(比如365.00 保留为356)
通过了就马上结贴。分不多。50
<script>
var a = 1.5000;
var b = "3.00000";
var no3 = eval(a);
var no4 = eval(b);
alert(no3);
alert(no4);
</script>
{
var b = parseInt(a);
a = parseFloat(a);
return a == b ? b : a;
}
var a = "1.5000";
var b = "3.00000";
var c = "0.00000";
var d = "12";
var e = "12.00200";
var f = "12.015";
var ex = /(0|([1-9][0-9]*(\.[0-9]*[1-9])?))(0*)/
var ex = /(0|([1-9][0-9]*(\.[0-9]*[1-9])?))(\.?0+)$/
alert(a.replace(ex, "$1"));
alert(b.replace(ex, "$1"));
alert(c.replace(ex, "$1"));
alert(d.replace(ex, "$1"));
alert(e.replace(ex, "$1"));
alert(f.replace(ex, "$1"));
</script>
var a = "1.5000";
var b = "3.00000";
var c = "0.00000";
var d = "12";
var e = "12.00200";
var f = "12.015";
var ex = /(0|([1-9][0-9]*(\.[0-9]*[1-9])?))(0*)/
var ex = /(0|([1-9][0-9]*(\.[0-9]*[1-9])?))(\.?0+)$/ // <----------------
alert(a.replace(ex, "$1"));
alert(b.replace(ex, "$1"));
alert(c.replace(ex, "$1"));
alert(d.replace(ex, "$1"));
alert(e.replace(ex, "$1"));
alert(f.replace(ex, "$1"));
</script>
s=s.replace(/^((.*)\..*?)0*$/,"$1").replace(/^(.*)\.$/,"$1");
alert(s);
{
var b = parseInt(a);
a = parseFloat(a);
return a == b ? b : a;
}
<script language="JavaScript">
var str="-1330.20500";
var reg=/(\-)?(\d)*\.[0-9]*[1-9]|(\-)?(\d)*[^\.](\d)*/ig
var arr = str.match(reg);
alert(arr[0]);
</script>
<SCRIPT>
var str = '0.500, 12.0, 365.00, 236.58400, 100.00, 153.0400, 3.00';
var reg = /(\d+)\.0+(?=\b)|(\d+\.\d+?)0+(?=\b)/g;
str = str.replace(reg, '$1$2');
alert(str); //0.5, 12, 365, 236.584, 100, 153.04, 3
</SCRIPT>
var str = "12.0";
str = str.replace( /\.?0*$/g,"");
var val = eval(str);
alert(val);
a = parseFloat(a);
return a == b ? b : a;