JavaScript - Blocks - 循环

本文主要是介绍JavaScript - Blocks - 循环，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

For 循环

for (initializer; exit-condition; final-expression) {// code to run
}

const cats = ['Bill', 'Jeff', 'Pete', 'Biggles', 'Jasmin'];
let info = 'My cats are called ';
const para = document.querySelector('p');for (let i = 0; i < cats.length; i++) {info += cats[i] + ', ';
}para.textContent = info;for (let i = 0; i < cats.length; i++) {if (i === cats.length - 1) {info += 'and ' + cats[i] + '.';} else {info += cats[i] + ', ';}
}

使用 break 跳出循环

跳出后，不再执行循环。

<label for="search">Search by contact name: </label>
<input id="search" typ

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