How to convert random numbers into integers in js

Random numbers generated by JavaScript can be converted to integers by the following methods: 1. Use Math.floor() to return the largest integer less than or equal to the specified number; 2. Use Math.round() to round to the nearest Integer; 3. Use Math.trunc() to return the part of the integer that is less than or equal to the specified number; 4. Use parseInt() to parse the random number in the form of a string into an integer.

Convert random numbers to integers in JavaScript

Question: How to generate JavaScript Convert random numbers to integers?

Detailed answer:

JavaScript provides a variety of methods to convert random numbers into integers:

1. Use Math.floor ():

##Math.floor() The function returns the largest integer less than or equal to the specified number. It can be used to convert floating point random numbers to integers.

<code class="js">const randomFloat = Math.random(); // 生成 0 到 1 之间的随机浮点数
const randomInteger = Math.floor(randomFloat); // 转换为整数</code>

2. Use Math.round():

Math.round() The function rounds a number to the nearest integer. It can be used to convert random floating point numbers to integers.

<code class="js">const randomFloat = Math.random(); // 生成 0 到 1 之间的随机浮点数
const randomInteger = Math.round(randomFloat); // 转换为整数</code>

3. Use Math.trunc():

Math.trunc() The function returns the part of the integer that is less than or equal to the specified number. It can be used to convert a random floating point number to an integer, discarding the decimal part.

<code class="js">const randomFloat = Math.random(); // 生成 0 到 1 之间的随机浮点数
const randomInteger = Math.trunc(randomFloat); // 转换为整数</code>

4. Use parseInt():

parseInt() function parses a string into an integer. It can be used to convert a string-form random number to an integer, provided that the string-form random number does not contain a decimal point.

<code class="js">const randomString = "0.1234"; // 表示随机浮点数的字符串
const randomInteger = parseInt(randomString); // 转换为整数</code>

Note:

For integer conversions that require rounding to a specific level of precision,

Math.round() and Math. trunc() provides more control. Math.floor() always rounds to the nearest smaller integer, while parseInt() can only handle random numbers in string form.

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