Snippet

Checking Eligibility with Logical AND Operators and Numbers

JavaScript primitive datatypes such as number and boolean can be validated using the typeof operator before performing comparisons. The logical AND operator (&&) evaluates operands from left to right and returns true only if every conditional expression is truthy, creating reliable access rules.

snippet.js

javascript

<script setup>
import { ref, computed } from 'vue';
 
const userAge = ref(20);
const isSubscribed = ref(true);
 
const hasPremiumAccess = computed(() => {
  const isAdult = typeof userAge.value === 'number' && userAge.value >= 18;
  const isPaidMember = typeof isSubscribed.value === 'boolean' && isSubscribed.value;
  return isAdult && isPaidMember;
});
</script>

vue

Breakdown

const isAdult = typeof userAge.value === 'number' && userAge.value >= 18;

Verifies that the age value is a numeric type and equals or exceeds 18.

return isAdult && isPaidMember;

Returns true only when both conditions evaluate to true.

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Checking Eligibility with Logical AND Operators and Numbers

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