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关于JS中一维数组和二维数组互转问题

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);

关于JS中一维数组和二维数组互转问题插图

如果arr1to2第二个参数为3,效果如下:

关于JS中一维数组和二维数组互转问题插图1

& nbsp;二维数组转一维数组

关于JS中一维数组和二维数组互转问题插图2

关于JS中一维数组和二维数组互转问题插图3

 	     //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);

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