Compile and execute a script.
JSBool JS_EvaluateScript(JSContext *cx, JSObject *obj, const char *src, uintN length, const char *filename, uintN lineno, jsval *rval); JSBool JS_EvaluateUCScript(JSContext *cx, JSObject *obj, const jschar *src, uintN length, const char *filename, uintN lineno, jsval *rval);
| || ||The context in which to run the script. Requires request. In a |
| || ||The scope in which to execute the script. This parameter is documented in detail at |
| || ||String containing the script to compile and execute.|
| || ||The length of |
| || ||Name of file or URL containing the script. Used to report filename or URL in error messages.|
| || ||Line number. Used to report the offending line in the file or URL if an error occurs.|
| || ||Out parameter. On success, if |
JS_EvaluateScript compiles and executes a script in the specified scope,
JS_EvaluateUCScript is the Unicode version of the function.
src is the string containing the text of the script.
length indicates the size of the text version of the script in characters.
filename is the name of the file (or URL) containing the script. This information is used in messages if an error occurs during compilation. Similarly,
lineno is used to report the line number of the script or file where an error occurred during compilation.
rval is an optional out parameter. If it is non-null, then on success, the result value is stored in
*rval. This value is determined the same way as for the standard
eval function. In the common case where the script is just an expression, the result value is simply the value of that expression. More generally, the result value is the value of the last-executed expression statement in the script that isn't in a function.
If a script compiles and executes successfully,
JS_EvaluateUCScript stores the result in
*rval, if non-null, and returns
JS_TRUE. Otherwise it returns
JS_FALSE and the value left in
*rval is undefined.