# Comparing values with a boolean type in JavaScript

In the previous example, we used the operator `===` for comparison. In this case, our variable was compared for equality to `true` both by value and by type.

For such a comparison, you can also use the operator `==`. If the variable `test` always has one of the values `true` or `false`, then nothing will change:

`let test = true; // here we write either true or false if (test == true) { console.log('+++'); } else { console.log('---'); }`

But if any values can fall into the variable `test`, then everything becomes much more complicated.

In this case, if the variable `test` contains a non-boolean value, then this value will first be converted to a boolean and only then will be compared.

Let, for example, the variable `test` contain the number `1`. In this case, it is first converted to a boolean type, that is, to `true`. And then the comparison will be done:

`let test = 1; if (test == true) { console.log('+++'); // it will work } else { console.log('---'); }`

But, for example, the number `0` is converted to `false`. And our condition will result in `'false'`:

`let test = 0; if (test == true) { console.log('+++'); } else { console.log('---'); // it will work }`

In fact, such a comparison can be explicitly rewritten in the following form:

`let test = 1; if (Boolean(test) == true) { console.log('+++'); } else { console.log('---'); }`

Remember and write what values when cast to a boolean type give `false`.

Without running the code, determine what will be output to the console:

`let test = 1; if (test == true) { console.log('+++'); } else { console.log('---'); }`

Without running the code, determine what will be output to the console:

`let test = 0; if (test == true) { console.log('+++'); } else { console.log('---'); }`

Without running the code, determine what will be output to the console:

`let test = 1; if (test == false) { console.log('+++'); } else { console.log('---'); }`

Without running the code, determine what will be output to the console:

`let test = 1; if (test != true) { console.log('+++'); } else { console.log('---'); }`

Without running the code, determine what will be output to the console:

`let test = ''; if (test == false) { console.log('+++'); } else { console.log('---'); }`

Without running the code, determine what will be output to the console:

`let test; if (test == true) { console.log('+++'); } else { console.log('---'); }`

Without running the code, determine what will be output to the console:

`let test = 3 * 'a'; if (test == true) { console.log('+++'); } else { console.log('---'); }`
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