There are plenty of articles online about responsive CSS Grid layouts, but most lack hands-on experience. This article shares best practices drawn from real projects.

Core Principles

Here is a real-world example:

const { sum, debounce } = require('./utils')

describe('utils', () => {
  test('sum calculates correctly', () => {
    expect(sum(1, 2)).toBe(3)
    expect(sum(-1, 1)).toBe(0)
  })

  test('debounce delays execution', () => {
    jest.useFakeTimers()
    const fn = jest.fn()
    const debounced = debounce(fn, 300)

    debounced()
    debounced()
    debounced()
    expect(fn).not.toHaveBeenCalled()

    jest.advanceTimersByTime(300)
    expect(fn).toHaveBeenCalledTimes(1)
  })
})

Rolling this pattern out across the team worked well and noticeably cut maintenance costs.

Source Analysis

Here's one way to implement it:

{% raw %}
<template>
  <div>
    <p>{{ message }}</p>
    <button @click="reverse">Reverse</button>
  </div>
</template>

<script>
export default {
  data() {
    return { message: 'Hello Vue 2' }
  },
  methods: {
    reverse() {
      this.message = this.message.split('').reverse().join('')
    }
  }
}
</script>
{% endraw %}

Keep an eye on the performance characteristics in the code above, and avoid needless computation.

Practical Application

Here's the implementation:

export default {
  props: ['items'],
  computed: {
    sorted() {
      return [...this.items].sort((a, b) => b.score - a.score)
    },
    count() {
      return this.items.length
    }
  },
  filters: {
    formatDate(val) {
      return new Date(val).toLocaleDateString('en-US')
    }
  }
}

This setup has been proven in production and runs reliably.

Best Practices

Let's start with a basic example: