📦primary expression
the simplest expressions. (literal, keyword, variable, global object property)
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the simplest expressions. (literal, keyword, variable, global object property)
Last updated
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JS ⟩ statement ⟩ expression ⟩ primary
an expression that doesn't include any simpler expressions, they are：
// examples
123 // ⭐️ literal
null // ⭐️ keyword (reference)
name // ⭐️ variable (reference)
undefined // ❗️ global object property (reference)primiary expressions (listed in MDN)
this - property of execution context (environment record, actually).
function - defines a function expression.
- defines a class expression.
defines a generator function expression.
pause and resume a generator function.
delegate to another generator function or iterable object.
defines an async function expression.
- wait for the promise's future value.
define an async generator function expression.
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regular expression literal syntax.
grouping operator.