javascriptcore_sys

Function JSObjectHasPropertyForKey

Source 
pub unsafe extern "C" fn JSObjectHasPropertyForKey(
    ctx: JSContextRef,
    object: JSObjectRef,
    propertyKey: JSValueRef,
    exception: *mut JSValueRef,
) -> bool
Expand description

Tests whether an object has a given property using a JSValueRef as the property key.

  • ctx: The execution context to use.
  • object: The JSObjectRef to test.
  • propertyKey: A JSValueRef containing the property key to use when looking up the property.
  • 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.

Returns true if the object has a property whose name matches propertyKey, otherwise false.

This function is the same as performing propertyKey in object from JavaScript.

ยงSee also