java script

Question

i m using a radioButtonList in asp.net web form, now i want to get selectedvalue of checked radio button,i used following code var radio=document.getElementsByName(" ") [0].checked; but i m getting 'undefined' what's the wrong in my code thnaks

ishika singh · Answer

thanks for all, i get my result if i start with 1 instead of 0, as 1 item with index 1 and second item with index 2 and so on thanks all again document.getElementsByName(" ") [0].checked give result undefined but if i tried with 1 as document.getElementsByName(" ") [1].checked i got radio checked or unchecked state

Arshad · Answer

Hi, try to use like this. document.getElementsById("rdoListSearchOrder").checked because the way you are trying to use that does bind the value at the runtime but that time control doesnot exist thats y. i think its not very clear. you can also use your old code this document.getElementsByName(" ") [0].checked after the body tag. Cause: before loading the asp.net content(or body tag) you are using the the Control in the Head tag, thats y nothing is coming. you can write your javascript function after the body tag that time it will work. Regards Arshad.

ishika singh · Answer

thanks, but i wana get selected radio list button value at client side, how can i get selectedvalue of radio list button by java script, thanks

Subramanyam Rompicherla · Answer

below i placed the sample code it will be useful for you function getSelectedRadio(buttonGroup) { // returns the array number of the selected radio button or -1 if no button is selected if (buttonGroup[ 0 ]) { // if the button group is an array (one button is not an array) for ( var i= 0 ; i if (buttonGroup[i].checked) { return i } } } else { if (buttonGroup.checked) { return 0 ; } // if the one button is checked, return zero } // if we get to this point, no radio button is selected return - 1 ; } // Ends the "getSelectedRadio" function function getSelectedRadioValue(buttonGroup) { // returns the value of the selected radio button or "" if no button is selected var i = getSelectedRadio(buttonGroup); if (i == - 1 ) { return "" ; } else { if (buttonGroup[i]) { // Make sure the button group is an array (not just one button) return buttonGroup[i].value; } else { // The button group is just the one button, and it is checked return buttonGroup.value; } } } // Ends the "getSelectedRadioValue" function

Purushottam Rathore · Answer

hi Ishika try this.. Sub submit(sender As Object, e As EventArgs) label1.Text="You selected " & radiolist1.SelectedItem.Text End Sub HTML clipboard Sub submit(sender As Object, e As EventArgs) label1.Text="You selected " & radiolist1.SelectedItem.Text End Sub Item 1 Item 2 Item 3 Item 4