What mistake have I made in my JavaScript code?

Data Entry:

let name = 'Sophia';
console.log('Hello, my name is', + name + '.');

Result:

SyntaxError: Unexpected identifier

Answer №1

To log multiple values or expressions using the console.log() function, you can separate them with a comma within the parentheses. However, when you also include the + operator, there may be an error because the + operator is used for concatenation, and if no concatenation is intended, it can cause issues.

To resolve this issue, you can either remove the commas or eliminate the + symbols from your code.

var myName = 'Sophia';
console.log('Hello my name is ' + myName + '.'); // No comma - one expression to evaluate
console.log('Hello my name is',  myName, '.');   // With commas - 3 expressions to evaluate
console.log('Hello my name is',  myName + '.');  // Combination - 2 expressions to evaluate

Answer №2

Remove the ',' character.

To learn about using the '+' operator to concatenate strings, check out the Long literal strings section on this page.

var myName = 'Sophia'; 
console.log('Hello, my name is ' + myName + '.');

Answer №3

Avoid using a comma in between string and concatenation. Instead, utilize ES6 template strings which allow placeholders for string substitution using the ${ } syntax. Here is an example:

var myName = 'Sophia';
console.log(`Hello my name is , ${myName} .`);

Answer №4

If you desire to include a comma in your output, you can achieve it by following the method below

var myName = 'Sophia';
console.log('Hello my name is, ' + myName + '.');

HOWEVER, if a comma is mistakenly added, simply remove , and the expected output will be achieved. Example provided below:

var myName = 'Sophia';
console.log('Hello my name is ' + myName + '.');

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