关于JS中一维数组和二维数组互转问题
时间：2023-02-01 10:28:45 | 栏目：JavaScript代码 | 点击：次
一维数组转二维数组
arr1to2(arr, number) {
var arr2 = [];
let len = arr.length;
for (let i = 0, j = 0; i < len; i += number, j++) {
arr2[j] = arr.splice(0, number);
}
return arr2;
},
使用：
let arr1 = [
103.743896484375, 21.48374090716327, 101.05224609374999,
20.550508894195637, 103.60107421874999, 17.518344187852218
];
console.log('一维数组:', arr1);
let arr2 = this.arr1to2(arr1, 2);
console.log('二维数组:', arr2);
如果arr1to2第二个参数为3，效果如下：
二维数组转一维数组
//二维数组转一维数组
let arr = [
[103.743896484375, 21.48374090716327],
[101.05224609374999, 20.550508894195637],
[103.60107421874999, 17.518344187852218]
];
console.log('二维数组:', arr);
let newarr = [];
for (const item of arr) {
newarr = [...newarr, ...item];
}
console.log('一维数组：', newarr);