JavaScript numeric type retains display decimal method

1<script type= "Text/javascript" >2         //keep two decimal places3         //function: Rounding the floating-point number, taking the 2 digits after the decimal point4         functionToDecimal (x) {5             varf =parsefloat (x); 6             if(IsNaN (f)) {7                 return; 8             }  9f = Math.Round (x*100)/100;Ten             returnF;  One         }   A    -    -         //The system retains 2 decimal places, such as: 2, which will be 00 after 2. That is 2.00 the         functionToDecimal2 (x) { -             varf =parsefloat (x);  -             if(IsNaN (f)) { -                 return false;  +             }   -             varf = Math.Round (x*100)/100; +             vars =f.tostring ();  A             varrs = S.indexof ('. '));  at             if(Rs < 0) {   -rs =s.length;  -s + = '. ';  -             }   -              while(s.length <= RS + 2) {   -s + = ' 0 ';  in             }   -             returns;  to         }   +            -         functionfomatfloat (src,pos) { the              returnMath.Round (Src*math.pow (), POS)/math.pow (POS); *         }   $         //RoundingPanax NotoginsengAlert ("Keep 2 decimal places:" + todecimal (3.14159267));  -Alert ("Force reserved 2 decimal places:" + toDecimal2 (3.14159267));  theAlert ("Keep 2 decimal places:" + todecimal (3.14559267));  +Alert ("Force reserved 2 decimal places:" + toDecimal2 (3.15159267));  AAlert ("Keep 2 decimal places:" + fomatfloat (3.14559267, 2));  theAlert ("Keep 1 decimal places:" + fomatfloat (3.15159267, 1));  +            -         //five homes six into $Alert ("Keep 2 decimal places:" + 1000.003.toFixed (2));  $Alert ("Keep 1 decimal places:" + 1000.08.toFixed (1));  -Alert ("Keep 1 decimal places:" + 1000.04.toFixed (1));  -Alert ("Keep 1 decimal places:" + 1000.05.toFixed (1));  the            -         //Scientific CountingWuyiAlert (3.1415.toExponential (2));  theAlert (3.1455.toExponential (2));  -Alert (3.1445.toExponential (2));  WuAlert (3.1465.toExponential (2));  -Alert (3.1665.toExponential (1));  About         //accurate to n-bit, n-bit not included $Alert ("Precision to decimal point 2nd" + 3.1415.toPrecision (2));  -Alert ("Precision to decimal point 3rd" + 3.1465.toPrecision (3));  -Alert ("Precision to decimal point 2nd" + 3.1415.toPrecision (2));  -Alert ("Precision to decimal point 2nd" + 3.1455.toPrecision (2));  AAlert ("Precision to decimal point 5th" + 3.141592679287.toPrecision (5));  +</script>

JavaScript numeric type retains display decimal method