Unexpected tokens (use ‘;’ to separate expressions on the same line)

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Explanation of Unexpected Tokens

An “unexpected token” error usually occurs when the JavaScript engine encounters a character or symbol that does not fit the expected syntax rules. The error message suggests using ‘;’ to separate expressions on the same line, which means adding semicolons at appropriate places.

Example 1:

Let’s consider the following code:

let x = 5
  let y = 10

In this example, the JavaScript engine encounters the second line without a semicolon at the end, which leads to the unexpected token error. To fix this, we can add a semicolon:

let x = 5;
  let y = 10;

Example 2:

Another scenario could be using a period (.) instead of a comma (,) to separate object properties:

let person = {
    name: 'John'
    age: 25
  }

In this case, the JavaScript engine expects a comma after the ‘name’ property but finds the unexpected token ‘age’. To resolve this issue, we should use a comma instead:

let person = {
    name: 'John',
    age: 25
  }

Remember to carefully check your code for missing or misplaced punctuation, as they can often cause unexpected token errors.

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