<script language=JavaScript>
function tofloat(f,dec) {
if(dec<0) return "Error:dec<0!";
result=parseInt(f)+(dec==0?"":".");
f-=parseInt(f);
if(f==0)
for(i=0;i<dec;i++) result+='0';
else {
for(i=0;i<dec;i++) f*=10;
result+=parseInt(Math.round(f));
}
return result;
}
function c(o)
{
a=parseFloat(o.Text1.value,10)
b=parseFloat(o.Text2.value,10)
if(isNaN(a) || isNaN(b))
{
o.Text3.value="0.00"
return
}
o.Text3.value= tofloat(a*b,2)
}
</script><form>
<input name=Text1 onblur="c(this.form)">*<input name=Text2 onblur="c(this.form)">=<input name=Text3>
</form>
function tofloat(f,dec) {
if(dec<0) return "Error:dec<0!";
result=parseInt(f)+(dec==0?"":".");
f-=parseInt(f);
if(f==0)
for(i=0;i<dec;i++) result+='0';
else {
for(i=0;i<dec;i++) f*=10;
result+=parseInt(Math.round(f));
}
return result;
}
function c(o)
{
a=parseFloat(o.Text1.value,10)
b=parseFloat(o.Text2.value,10)
if(isNaN(a) || isNaN(b))
{
o.Text3.value="0.00"
return
}
o.Text3.value= tofloat(a*b,2)
}
</script><form>
<input name=Text1 onblur="c(this.form)">*<input name=Text2 onblur="c(this.form)">=<input name=Text3>
</form>
解决方案 »
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