Function ul_sys::JSValueIsInstanceOfConstructor

pub unsafe extern "C" fn JSValueIsInstanceOfConstructor(
    ctx: JSContextRef, 
    value: JSValueRef, 
    constructor: JSObjectRef, 
    exception: *mut JSValueRef
) -> bool

@function @abstract Tests whether a JavaScript value is an object constructed by a given constructor, as compared by the JS instanceof operator. @param ctx The execution context to use. @param value The JSValue to test. @param constructor The constructor to test against. @param exception A pointer to a JSValueRef in which to store an exception, if any. Pass NULL if you do not care to store an exception. @result true if value is an object constructed by constructor, as compared by the JS instanceof operator, otherwise false.