JS::ToString 编辑

This article covers features introduced in SpiderMonkey 31

Convert any JavaScript value to a string.

Syntax

#include "js/Conversions.h" // as of SpiderMonkey 38; previously in jsapi.h

JSString*
JS::ToString(JSContext *cx, JS::HandleValue v)

Name	Type	Description
`cx`	`JSContext *`	The context in which to perform the conversion. Requires request. In a `JS_THREADSAFE` build, the caller must be in a request on this `JSContext`.
`v`	`JS::HandleValue`	The value to convert.

JS::ToString returns a string representation of a JavaScript value.

If v.isString() is true, it calls v.toString(). Otherwise, it converts the value to string.

On success, JS::ToString returns a JSString instance. On error or exception, it returns nullptr.