JS_GetStringCharAt 编辑
This article covers features introduced in SpiderMonkey 38
Return a specified character from a string.
Syntax
bool
JS_GetStringCharAt(JSContext *cx, JSString *str, size_t index, char16_t *res);
char16_t
JS_GetFlatStringCharAt(JSFlatString *str, size_t index);
| Name | Type | Description |
|---|---|---|
cx | JSContext * | The context in which to create the new string. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext. |
str | JSString * or JSFlatString * | The string to get character. |
index | size_t | An integer between 0 and 1-less-than the length of the string. |
res | char16_t * | (JS_GetStringCharAt only) Out parameter. On successful, receives the character code. |
Description
JS_GetStringCharAt and JS_GetFlatStringCharAt get the specified character from the string str.
On successful, JS_GetStringCharAt returns true and stores the character code into *res, otherwise returns false.
JS_GetFlatStringCharAt always succeeds, and returns the character code.
index should not be greater than or equal to the length of str.
See Also
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