Алексей Ярков

(function(){
  const buttons = document.querySelectorAll('.js-entity-accept');
  [...buttons].forEach(button => button.click());
})()

const data = await array.reduce(async (accumP, current, index) => {
  const accum = await accumP;
  …
}, Promise.resolve(…));

new Vue({
   el: '#app',
   data: {
     items: [{em: true},{em: true},{em: true}]
   },
    methods:{
      click(item) {
         item.em = !item.em
      }
    }
})

<div id="app">
  <div class="wrap">
    <div class="item" v-for="(item, i) in items" :key="i">
      <div class="parent" @click="click(item)">
        {{item.em}}
        <div class="child" :class="`class${i}`" :style="{background: item.em ? 'blue' : 'red'}">{{ i + 1 }}</div>
      </div>
    </div>
  </div>
</div>

Как создать конфиг плагина chrome?

<script>
function imtc_calculation() {
    alert('imtc_calculation');
}
</script>
<button onclick="imtc_calculation();">CLICK</button>

let first  = [ {name: 'Maxim', secondName: 'Ivanov'}, {name: 'Lena', secondName: 'Kirolova'} ];
let second = [ {age: 20}, {age: 18} ];

let third = first.map((item, index) => ({...item, ...second[index]}));

console.log(third);

if (arrWinNums.includes(+td.innerHTML)) {
          this.style.background = 'red';
        } else {
          this.style.background = 'yellow';
        }