select all checkboxes using javascript?

Question

hi i am taking one datagrid in that grid i am taking checkboxes and out side of the datagrid i am taking 2 html buttons i.e. Select All and Select None. if i am click on select all button then all check boxes are selected and if i click select none button all checkboxes are unchecked how to write javascript function todo this. please give a sample code for this. Thanks

Shankey · Answer

Hi ajay raju  Following is your solution and please mark my answer as accepted if it helped you:) Step1: Call MarkUnmarkMessages(true); function on click of select all button and call MarkUnmarkMessages(false); function on click of select none. Step2: Add following script. function MarkUnmarkMessages(ischeck) { var grid = document.getElementById( ); var Msg = grid.getElementsByTagName('input'); for (var m = 0; m { if (Msg[m].type == 'checkbox') { Msg[m].checked = ischeck; } } }

ajay raju · Answer

Thank you Maninder. your code is very helpful for me.