describe
The INDEX function returns a value or a reference to the value from a table or range. You can use INDEX function in two ways -
- Returns the value of the specified cell or cell array.
- Returns a reference to the specified cell.
Use the INDEX function to return the value of a specified cell or cell array
Use this parameter if the first parameter of INDEX is an array constant.
describe
This function returns the value of an element in a table or array selected by row number and column number index.
grammar
INDEX (array, row_num, [column_num])
parameter
| Argument | describe | Required/Optional |
|---|---|---|
| Array | Cell range or array constant. If the array contains only one row or column, the corresponding Row_num or Column_num parameter is optional. If the array has more than one row and more than one column, and only Row_num or Column_num is used, INDEX returns an array of the entire row or column in the array. |
Required |
| Row_num | Select the row in the array from which to return a value. If Row_num is omitted, Column_num is required. |
Required |
| Column_num | Select the column in the array from which to return a value. If Column_num is omitted, Row_num is required. |
Optional |
Comment
-
If you use both the Row_num and Column_num parameters, INDEX returns the value in the cell at the intersection of Row_num and Column_num.
-
If Row_num or Column_num is set to 0 (zero), INDEX returns an array of values for the entire column or row, respectively. To use values returned as an array, enter the INDEX function as an array formula within a horizontal range of cells in a row and a vertical range of cells in a column. To enter an array formula, press CTRL + SHIFT + ENTER
-
Row_num and Column_num must point to cells in the array. Otherwise, INDEX will return the #REF! error value.
Use the INDEX function to return a reference to a specified cell
describe
This function returns a reference to the cell at the intersection of a specific row and column. If the reference consists of non-adjacent selections, you can select which selection to find.
grammar
INDEX (reference, row_num, [column_num], [area_num])
parameter
| Argument | describe | Required/Optional |
|---|---|---|
| Reference | A reference to one or more cell ranges. If you are entering a non-contiguous range for a reference, enclose the reference in parentheses. If each range in the reference contains only one row or column, the Row_num or Column_num parameters respectively are optional. like. For single line quotes, use - INDEX(reference , column_num) |
Required |
| Row_num | The line number in the quote from which to return the quote. |
Required |
| Column_num | The column number in the reference from which to return the reference. |
Optional |
| Area_num | Select a reference range from which the intersection of Row_num and Column_num is returned. The first area selected or entered is numbered 1, the second area numbered 2, and so on. If Area_num is omitted, INDEX uses area 1. |
Optional |
Comment
-
After Reference and Area_num select a specific range, Row_num and Column_num select a specific cell: Row_num 1 is the first row in the range, Column_num 1 is the first column, and so on. The reference returned by INDEX is the intersection of Row_num and Column_num.
-
If Row_num or Column_num is set to 0 (zero), INDEX returns a reference to the entire column or row, respectively.
-
Row_num, Column_num and Area_num must point to the cells in the reference. Otherwise, INDEX will return the #REF! error value. If Row_num and Column_num are omitted, INDEX returns the area in the reference specified by Area_num.
-
The output of the INDEX function is a reference and is interpreted through other formulas. Depending on the formula, the return value of INDEX can be used as a reference or value. For example, the formula CELL("width",INDEX(A1:B2,1,2)) is equivalent to CELL("width",B1). The CELL function uses the return value of INDEX as the cell reference. On the other hand, a formula such as 2 * INDEX(A1:B2,1,2) will convert the return value of INDEX into a number in cell B1.
applicability
Excel 2007,Excel 2010,Excel 2013,Excel 2016
Example
https://www.learnfk.com/javascript/advanced-excel-lookup-reference-index-function.html