JS_IsIdentifier 编辑
This article covers features introduced in SpiderMonkey 17
Test whether the given string is a valid ECMAScript identifier.
Syntax
bool
JS_IsIdentifier(JSContext *cx, JS::HandleString str, bool *isIdentifier);
bool
JS_IsIdentifier(const char16_t *chars, size_t length); // Added in SpiderMonkey 38
| Name | Type | Description |
|---|---|---|
cx | JSContext * | Pointer to a JS context from which to derive runtime information. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext. |
str | JS::HandleString | The string to test. |
chars | const char16_t * | The pointer of the string to test. |
length | size_t | The length of chars. |
isIdentifier | bool * | Out parameter. On success, *isIdentifier receives whether str is an identifier or not. |
Description
JS_IsIdentifier tests if the given string is a valid ECMAScript identifier. On successful, JS_IsIdentifier stores the test result to *isIdentifier and returns true, otherwise returns false and the value of *isIdentifier is undefined.
JS_IsIdentifier which takes chars and length is infallible, so just returns whether the chars are an identifier.
See Also
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