JSBool JS_ValueToDouble()

Description

This function extracts a function argument from a jsval structure, converts it to a double (if possible), and passes the converted value back to the caller.

Arguments

JSContext *cx, jsval v, double *dp

  • The cx argument is the opaque JSContext pointer that passed to the JavaScript function.
  • The v argument is the jsval structure from which the double is to be extracted.
  • The dp argument is a pointer to an 8-byte double. This function stores the converted value in *dp.

Returns

A Boolean value: JS_TRUE indicates success; JS_FALSE indicates failure.