Definitions and Usage
The ToFixed () method can be rounded to a number that specifies the number of decimal places. Grammar
Numberobject.tofixed (num)
Parameters |
Description |
Num |
Necessary. Specify the number of digits, which are values between 0 ~ 20, including 0 and 20, and some implementations can support a larger range of values. If this argument is omitted, 0 is substituted. |
return value
Returns the string representation of numberobject, with no exponential notation, and a fixed num digits after the decimal point. If necessary, the number is rounded, or it can be replenished with 0 so that it reaches the specified length. If NUM is greater than le+21, the method calls only Numberobject.tostring () and returns a string that is represented by exponential notation. Throw
Throws an exception rangeerror when NUM is too small or too large. The value between 0 ~ 20 does not throw the exception. Some implementations support a larger or smaller range of values.
Throws a TypeError exception when the object that calls the method is not number. instance
In this case, we'll round the number to a number with only one decimal:
Show the number 13.37 with one decimal:
<script type= "Text/javascript" >
var num = new number (13.37);
document.write (num.tofixed (1))
</script>
Output:
Show the number 13.37 with one decimal:
13.4