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String operators are used to combine or update text (strings) in JavaScript. They make it easy to build messages, labels, or any textual content in your programs.
+)The + operator can combine (concatenate) two or more strings into a single string.
Example 1: Basic concatenation
let firstName = 'John';
let lastName = 'Doe';
let fullName = firstName + ' ' + lastName;
console.log(fullName); // Output: "John Doe"
Example 2: String + Number
let result = 'Age: ' + 25;
console.log(result); // Output: "Age: 25"
Example 3: Number + String
let result = 25 + ' years';
console.log(result); // Output: "25 years"
+=)The += operator adds a string to an existing string variable, effectively updating it.
Example 1: Appending text
let message = 'Hello';
message += ' World';
console.log(message); // Output: "Hello World"
Example 2: Appending multiple times
let log = 'Start';
log += ' -> Step 1';
log += ' -> Step 2';
console.log(log); // Output: "Start -> Step 1 -> Step 2"
Example 3: Appending numbers
let text = 'Total: ';
text += 100;
console.log(text); // Output: "Total: 100"