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How to convert javascript numbers to strings

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Release: 2023-04-24 14:27:16
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JavaScript is a widely used scripting language commonly used in areas such as web development and mobile application development. One of the common operations is conversion between numbers and strings. In this article, we will cover how to convert numbers to strings in JavaScript.

The way to convert a number into a string is to call the toString() method. This method can convert a number into a string, for example:

let num = 123;
let str = num.toString();
console.log(typeof str);  // string
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toString() method can accept a parameter to specify the base of conversion (that is, the number of sun characters). By default, this method converts numbers to decimal strings. However, you can specify any base, from 2 to 36. For example, the following code converts a number to a binary string:

let num = 123;
let str = num.toString(2);
console.log(str);  // "1111011"
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Another way to convert a number to a string is to use the operator. This operator concatenates the number with an empty string, converting the number to a string, for example:

let num = 123;
let str = num + '';
console.log(typeof str);  // string
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Another way to convert a number to a string is to use the String() function. This function converts any value to a string, for example:

let num = 123;
let str = String(num);
console.log(typeof str);  // string
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All three methods can convert numbers to strings. You can choose any method according to your needs. However, it is important to note that if you wish to keep the number as a string, rather than converting it to a string, you should use the typeof operator to detect the type of the variable.

let num = '123';
console.log(typeof num);  // string
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In short, converting numbers to strings is a common operation in JavaScript programming. This can be easily done using the toString() method, operator, or String() function. However, it is important to note that if you wish to preserve the type of a numeric variable, you should perform conversions with caution.

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source:php.cn
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