JavaScript toFixed () method __java

Source: Internet
Author: User
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

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