Western Governors University (WGU) ITSW 2113 D278 Scripting and Programming Foundations Practice Exam

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What is the syntax for a basic if statement in JavaScript?

if (condition) { code to execute }

The syntax for a basic if statement in JavaScript is structured as follows: it begins with the keyword 'if', followed by the condition enclosed in parentheses. This structure is critical because JavaScript needs to evaluate the expression inside the parentheses to determine whether to execute the code block that follows. The code to execute is then placed within curly braces, which define the block of code that should run if the condition evaluates to true.

Using parentheses to encapsulate the condition is vital for clarity and avoids parsing errors, as it explicitly indicates that the enclosed expression is the condition to be evaluated. Curly braces following the condition are also essential as they clearly define the scope of what code belongs to that if statement, helping avoid ambiguities in more complex code. This syntactical requirement supports good coding practices and improves readability.

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if condition { code to execute }

if (condition) then code to execute

if [condition] code to execute

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