Conteúdo do Curso
Introduction to JavaScript
Introduction to JavaScript
else
While if
statements execute code under specific conditions, they don't create true branching in your code. Instead, they guide the interpreter through different paths within your program.
The else Keyword
To introduce branching behavior, you can use the else
keyword in combination with if
to create conditional statements.
Consider this example:
let a = 60; if (a >= 100) { console.log("a is greater than or equal to 100"); } else { console.log("a is less than 100"); }
In the example above, the condition a >= 100
evaluates to false
, so the code block within the if
statement is not executed. Instead, the code block within the else
statement is executed because the if
condition is false
.
The syntax of the else
statement is similar to that of the if
statement, except it doesn't require a condition or parentheses ()
.
Note
When using an
else
statement, do not place the end-of-command (;
) after theif
code block ({}
), as this will result in aSyntaxError
. Theif-else
statement is considered a single command.
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