Farkl

data: () => ({
  maxlen: 10,
  items: [
    'hello, world!!',
    'fuck the world',
    'fuck everything',
    '1234567890',
    'Lorem ipsum dolor sit amet, consectetur adipiscing elit,',
   ],
}),
methods: {
  short1: (str, maxlen) => str.length <= maxlen ? str : str.slice(0, maxlen) + '...',
  short2: (str, maxlen) => str.substring(0, maxlen) + (str.charAt(maxlen) && '...'),
  short3: (str, maxlen) => str.replace(RegExp(`(.{${maxlen}}).+`), '$1...'),
  short4: (str, maxlen) => str.replace(RegExp(`(?<=.{${maxlen}}).+`), '...'),
},

<input type="range" min="1" max="20" v-model="maxlen">
<span>{{ maxlen }}</span>

<div v-for="n in items">
  <div v-text="short1(n, maxlen)"></div>
  <div v-html="short2(n, maxlen)"></div>
  <div :text-content.prop="short3(n, maxlen)"></div>
  <div>{{ short4(n, maxlen) }}</div>
</div>

const products = {
  value: false
};
console.log(products)
console.log(products.value)
products.value = true;