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# Conditional operators: if, '?'
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Sometimes we need to perform different actions basing on a condition.
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Sometimes we need to perform different actions based on a condition.
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There's an`if`operator for that and also the "question mark" operator: `"?"` for conditional evaluation.
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There is`if`statement for that and also the conditional (ternary) operator for conditional evaluation which we will be referring as "question mark" operator: "?" for simplicity.
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## The "if" operator
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## The "if" statement
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The "if" operator gets a condition, evaluates it and -- if the result is `true` -- executes the code.
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The "if" statement gets a condition, evaluates it and -- if the result is `true` -- executes the code.
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For example:
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In the example above, the condition is a simple equality check: `year == 2015`, but it can be much more complex.
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If there's more than one command to execute -- we can use a code block in figure brackets:
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If there is more than one command to execute -- we can use a code block in figure brackets:
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```js
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if (year ==2015) {
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}
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```
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It is recommended to use figure brackets every time with `if`, even if there's only one command. That improves readability.
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It is recommended to use figure brackets every time with `if`, even if there is only one command. That improves readability.
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## Boolean conversion
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The `if (...)`operator evaluates the expression in parentheses and converts it to the boolean type.
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The `if (...)`statement evaluates the expression in parentheses and converts it to the boolean type.
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Let's recall the conversion rules from the chapter <info:type-conversions>:
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## The "else" clause
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The `if`operator may contain an optional "else" block. It executes when the condition is wrong.
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The `if`statement may contain an optional "else" block. It executes when the condition is wrong.
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For example:
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```js run
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## Several conditions: "else if"
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Sometimes we'd like to test several variants of a condition. There's an `else if` clause for that.
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Sometimes we'd like to test several variants of a condition. There is an `else if` clause for that.
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For example:
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The notation seem to be shorter than `if`, that appeals to some programmers. But it is less readable.
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Here's the same with `if` for comparison:
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Here is the same with `if` for comparison:
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```js run no-beautify
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let company =prompt('Which company created JavaScript?', '');
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Our eyes scan the code vertically. The constructs which span several lines are easier to understand than a long horizontal instruction set.
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The idea of a question mark `'?'` is to return one or another value depending on the condition. Please use it for exactly that. There's`if` to execute different branches of the code.
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The idea of a question mark `'?'` is to return one or another value depending on the condition. Please use it for exactly that. There is`if` to execute different branches of the code.
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