本篇文章给大家总结了一些javascript遍历数组的几种方法。有一定的参考价值，有需要的朋友可以参考一下，希望对大家有所帮助。 有几种方法可以遍历数组，下面将逐个罗列！ while循环 复制let index =0;const array =[1,2,3,4,5];while(index < array.length){ console.log(array[index]); index ;} for循环 复制const array =[1,2,3,4,5];for(let index=0;indexMath.pow(x,2);const squares = array.map(square); console.log(`${array}`); console.log(`${squares}`) reduce reduce()方法对累加器和数组中的每个元素(从左到右)应用一个函数，以将其减小为单个值 复制const array =[1,2,3,4,5];const sum =(x,y)=> x y;const array_sum = array.reduce(sum,0); console.log(`the sum of arrray:${array} is ${array_sum}`); filter 根据布尔函数过滤筛选数组中的元素 复制const array =[1,2,3,4,5];const even = x => x%2===0;const even_array = array.filter(even); console.log(`even numbers in array ${array} : ${even_array}`); every 得到了一个数组，想测试每个元素是否满足给定条件 复制const array =[1,2,3,4,5,8];const under_six = x => x<6;if(array.every(under_six)){ console.log(`every elemnet in the array is less than 6`);}else{ console.log(`at least one element in the array was bigger than 6`);} some 测试是否至少有一个元素与布尔函数匹配 复制const array =[2,4,5,6,8];const over_five = x => x>5;if(array.some(over_five)){ console.log(`at least one element bigger than 5 was found`);}else{ console.log(`no element bigger than 5 was found`);} 到此就结束啦，如果还有其他的欢迎补充！ 相关教程推荐：JavaScript视频教程