What is the use of colspan in html?

Answer 1

It's like merge cells in MS Excel.

Answer 2

'colspan' is an attribute of the html <td> ( cell ) tag element, used for made once cell with the number ( value of attribute ) of direct neighbors cells...
'colspan' bring together columns, when 'rowspan' handles... rows ^^

Answer 3

colspan=no. of column => It merge the number of columns specified.

Answer 4

colspan spans a column to several columns as defined.