获取表中单元格的列索引和行索引

Question

在JS中，如何检索列＆amp;行索引;给定单元格索引，宽度（colCount）＆amp;表的高度（rowCount）？

例如

var cellIndex = 11;
var colCount = 3;
var rowCount = 5;

| 1 | 2 | 3 |
| 4 | 5 | 6 |
| 7 | 8 | 9 |
|10 | X |12 |
|13 |14 |15 |

//should return
colIndex = 2;
rowIndex = 4;

例如

var cellIndex = 8;
var colCount = 4;
var rowCount = 4;

| 1 | 2 | 3 | 4 |
| 5 | 6 | 7 | X |
| 9 |10 |11 |12 |
|13 |14 |15 |16 |

//should return
colIndex = 4;
rowIndex = 2;

谢谢！

Answer 1

指数的计算方法如下。

rowIndex = ( ( cellIndex - 1 ) / colCount ) + 1;
colIndex = ( ( cellIndex - 1 ) % colCount ) + 1;

请注意，计算不需要rowCount。