Tofixed () method of Number object in JavaScript _javascript tips

Definitions and usage

The ToFixed () method can be rounded to a number that specifies the number of decimal places.

Grammar

numberobject.tofixed (num) parameter description

Num required. 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.

Thrown

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

The above JavaScript number object of the tofixed () method is small series to share all the content, hope to give you a reference, but also hope that we support the cloud habitat community.