What you are referring to is just syntactic sugar. @click is the same as v-on:click and :class is the same as v-bind:class. So you can write this line "less ali

What you are referring to is just syntactic sugar. @click is the same as v-on:click and :class is the same as v-bind:class. So you can write this line "less alien" like this: <th v-for="key in columns" v-on:click="sortBy(key)" v-bind:class="{active: sortKey == key}">