<script >
var str=" a b";
alert(countBlank(str));
str = str.replace(/([\u0020]{2,})/ig,"\u0020");
alert(countBlank(str));
function countBlank(x)
{
var rtn=0;
for(i=0;i<x.length;i++)
{
if(x.substr(i,1)==" ")
{
rtn += 1;
}
}
return(rtn);
}
</script>
var str=" a b";
alert(countBlank(str));
str = str.replace(/([\u0020]{2,})/ig,"\u0020");
alert(countBlank(str));
function countBlank(x)
{
var rtn=0;
for(i=0;i<x.length;i++)
{
if(x.substr(i,1)==" ")
{
rtn += 1;
}
}
return(rtn);
}
</script>
var str=" a b";
alert(countBlank(str));
str = str.replace(/([\x20]{2,})/ig,"\x20");
alert(countBlank(str));
function countBlank(x)
{
var rtn=0;
for(i=0;i<x.length;i++)
{
if(x.substr(i,1)==" ")
{
rtn += 1;
}
}
return(rtn);
}
</script>
var str=" a b";
alert(countBlank(str));
str = str.replace(/([ ]{2,})/ig," ");
alert(countBlank(str));
function countBlank(x)
{
var rtn=0;
for(i=0;i<x.length;i++)
{
if(x.substr(i,1)==" ")
{
rtn += 1;
}
}
return(rtn);
}
</script>都可以