Require template literals instead of string concatenation JS-0246
Anti-pattern
Minor
4 months ago
—
4 months old
Unexpected string concatenation
103 function writeUserData(userId, email, userInfo) {
104 const { firstName, surname, dob, gender, age } = userInfo;
105 const user_type = userInfo["user-type"];
106 set(ref(database, "users/" + userId), {107 firstname: firstName,
108 surname: surname,
109 email: email,
Description
In ES2015 (ES6), we can use template literals instead of string concatenation.
var str = `Hello, ${name}!`;
Bad Practice
var str = "Hello, " + name + "!";
var str = "Time: " + (12 * 60 * 60 * 1000);
Recommended
var str = "Hello World!";
var str = `Hello, ${name}!`;
var str = `Time: ${12 * 60 * 60 * 1000}`;
var str = "Hello, " + "World!";