JavaScript单线会让您看起来像专业人士

<code class="javascript">[a, b] = [b, a];</code>

<code class="javascript">const isEven = n => !(n & 1);</code>

<code class="javascript">const reverseString = str => [...str].reverse().join('');</code>

<code class="javascript">const randomColor = () => `#${Math.floor(Math.random()*0xffffff).toString(16).padStart(6, '0')}`;</code>

<code class="javascript">const lastItem = arr => arr.at(-1);</code>

<code class="javascript">const flatArray = arr => arr.flat(Infinity);</code>

<code class="javascript">const toNumber = str => +str;</code>

<code class="javascript">const uniqueArray = arr => [...new Set(arr)];</code>

<code class="javascript">const intersection = (a, b) => a.filter(x => b.includes(x));</code>

<code class="javascript">const shuffle = arr => arr.sort(() => Math.random() - 0.5);</code>

<code class="javascript">const timestamp = () => Date.now();</code>

<code class="javascript">const greet = name => name || 'guest';</code>

<code class="javascript">const countOccurrences = (arr, val) => arr.reduce((a, v) => v === val ? a + 1 : a, 0);</code>

<code class="javascript">const randomItem = arr => arr[Math.floor(Math.random() * arr.length)];</code>

<code class="javascript">const rgbToHex = (r, g, b) => `#${((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)}`;</code>

<code class="javascript">const isPalindrome = str => str === [...str].reverse().join('');</code>

<code class="javascript">const boolToNumber = bool => +bool;</code>

<code class="javascript">const capitalize = str => str.charAt(0).toUpperCase() + str.slice(1);</code>

<code class="javascript">const trimSpaces = str => str.replace(/\s+/g, '');</code>

<code class="javascript">const randomBoolean = () => Math.random() >= 0.5;</code>