In JavaScript, removing the remainder, that is, removing the value after the decimal point, can be achieved by using the parseInt() function; this function can parse a string and return an integer, and the syntax is "parseInt (division result)" .
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
The parseInt() function can parse a string and return an integer.
When the value of parameter radix is 0, or the parameter is not set, parseInt() will determine the base of the number based on string.
When the parameter radix is omitted, JavaScript defaults to the radix of numbers as follows:
If string starts with "0x", parseInt() will parse the rest of string into hexadecimal integers.
If string starts with 0, then ECMAScript v3 allows an implementation of parseInt() to parse the following characters into octal or hexadecimal numbers.
If string starts with a number from 1 to 9, parseInt() will parse it into a decimal integer.
Syntax
parseInt(string, radix)
Parameter Description
string Required. The string to be parsed.
radix Optional. Represents the base of the number to be parsed. The value is between 2 ~ 36.
The example is as follows:
<html> <head> <meta charset="utf-8"> <title>123</title> </head> <body> <script> var y = 5; var z = 2; var b = 3; var x = y / z; var c = y / b; document.write(parseInt(x) + "<br>") ; document.write(parseInt(c) + "<br>"); </script> </body> </html>
Output result:
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