clear
clear() -> Array
清空所有数组元素
样例
var guys = ['Sam', 'Justin', 'Andrew', 'Dan'];
guys.clear();
// -> []
guys
// -> []
clear() -> Array
清空所有数组元素
var guys = ['Sam', 'Justin', 'Andrew', 'Dan'];
guys.clear();
// -> []
guys
// -> []