Special Attributes 包括以下:key ref slot v-* key https://vuejs.org/v2/api/#key The key special attribute is primarily used as a hint for Vue’s virtual DOM algorithm to identify VNodes when diffing the new list of nodes against the old list. Wit…
在PHP的语法中,这意味着该函数返回引用而不是值.例如:$foo foo;function & get_foo_ref (){global $foo;return $foo;}// Get the reference to variable $foo stored into $bar$bar & get_foo_ref();$bar bar;echo $foo; // Outputs bar, since $bar re…