Jun 6, 2013 · I want to concatenate a, b and c so that they look like a unique string "a-b-c" (or "0-12-24" in the example). a , b and c will always represent numbers. Converting each one of them from int to string require a lot of code: I'd just use sprintf() if I were in PHP or C, but how can I do this in JS without using toString() for each parameter and ...

Nov 12, 2009 · I'd prefer the concat way : const numVar1 = 5; const numVar2 = 6; const value = "".concat(numVar1, numVar2); // or directly with values const value2 = "".concat(5, 6); You can also use an array which can help in some use cases : const value3 = [5, 6, numVar1].join('');

Nov 29, 2016 · In JavaScript, the + operator is used for both numeric addition and string concatenation. When you "add" a number to a string the interpreter converts your number to a string and concatenates both together.

Mar 17, 2020 · We mix string concatenation and type coercion. "2"+"2" = "22 string concatenation "22"-"2" = 20 Type coercion to int, caused by the minus operator. "22" - "2", cast "string-string" to "int-int". 22 - 2 = 20

Feb 2, 2024 · To concatenate a string and an integer using the toString() method, we first convert the integer to a string using this method. Once both values are in string form, they can be concatenated using the + operator.

Mar 28, 2024 · JavaScript provides a direct method for concatenating strings with integers using the concat() method. This method can also be utilized for combining multiple strings and variables. See how the concat() method works in the following example: let string2 = "World!"; console.log(result); // Output: Hello, 42 World!

Jul 1, 2021 · You can concatenate a number to a string using the + operator as shown below. let demo = example + 42; // 'Hello World42' let reverse = 42 + example; // '42Hello World' You can also use the String#concat() function, but using the + operator is less error prone in case str isn't a string. null.concat(42); // Throws a TypeError.

Sep 17, 2020 · You can directly add string and number in JavaScript, no need for a special method or typecasting. Just use a + (Adds two operands) OR += operator to Concatenate integer variable to a string variable.

The concat() method joins two or more strings. The concat() method does not change the existing strings. The concat() method returns a new string. ... Required. The strings to be joined. A new string containing the combined strings. let text2 = "world!"; let text3 = "Have a nice day!"; concat() is an ECMAScript1 (JavaScript 1997) feature.

Jul 29, 2019 · You can concatenate strings in JavaScript using the `+` operator, the `Array#join()` function, or the `String#concat()` function. Here's what you need to know.