This is a rather nonsense example that logs "Hello World" to the console.
Why? Because we can 🚀 —and because it demonstrates the basic usage of JerryScript.
To run this masterpiece on a Linux host, simply use:
Sh
make linux
C
#include <jerryscript-ext/handlers.h>
#include <jerryscript-ext/properties.h>
#include <jerryscript.h>
void jerry_test() {
// this is the test script
const jerry_char_t script[] = "let hello='Hello World!';print(hello, 1/3);";
jerry_value_t ret_value = jerry_undefined();
/* Initialize engine */
jerry_init(JERRY_INIT_EMPTY);
jerry_log_set_level(JERRY_LOG_LEVEL_DEBUG);
jerry_log(JERRY_LOG_LEVEL_DEBUG,
"This test run the following script code: %s", script);
/* Register the print function in the global object */
jerryx_register_global("print", jerryx_handler_print);
/* Setup Global scope code */
ret_value = jerry_parse(script, sizeof(script) - 1, NULL);
if (!jerry_value_is_exception(ret_value)) {
/* Execute the parsed source code in the Global scope */
ret_value = jerry_run(ret_value);
}
if (jerry_value_is_exception(ret_value)) {
jerry_log(JERRY_LOG_LEVEL_DEBUG, "Script error...\n\n");
}
jerry_value_free(ret_value);
/* Cleanup engine */
jerry_cleanup();
}
Sh
I (307) main_task: Started on CPU0
I (317) main_task: Calling app_main()
I (317) JS: This test run the following script code:
I (317) JS: let hello='Hello World!';print(hello, 1/3);
Hello World! 0.3333333333333333
To create a project from this example, run:
idf.py create-project-from-example "marcel-cd/jerryscript=1.0.2:hello_world"