Users' questions 

How to change dropdown list selected index in JavaScript?

Leia Doyle

How to change dropdown list selected index in JavaScript?

Advance Thanks for example I have two dropdown list in form , If I click values in first dropdown list. automaticaly respective values to show the scecond in drop down list . Please Sign up or sign in to vote. Match the text value with the value you are given. If it is matched with the text of the option you can set the selectedIndex to that.

When does the onchange event occur in JavaScript?

The onchange event occurs when the value of an element has been changed. For radiobuttons and checkboxes, the onchange event occurs when the checked state has been changed. Tip: This event is similar to the oninput event. In JavaScript, using the addEventListener() method:

How to use onchange event in Internet Explorer?

onchange Event 1 Definition and Usage. The onchange event occurs when the value of an element has been changed. 2 Browser Support. Note: The addEventListener () method is not supported in Internet Explorer 8 and earlier versions. 3 Technical Details 4 More Examples

When does the onchange event occur in a checkbox?

The onchange event occurs when the value of an element has been changed. For radiobuttons and checkboxes, the onchange event occurs when the checked state has been changed.

How to call the JavaScript function in dropdownlist change event?

How to call the JavaScript function in DropDownList Change Event? You can use the ScriptManager.RegisterStartupScript (); to call any of your javascript event/Client Event from the server. For example, to display a message using javascript’s alert ();, you can do this:

How to change dropdown value based on other dropdown values?

Create an array of the pairs you’re interested in, then when select 1 is changed, update select2 available options based on what is defined in your array of allowed pairs: http://jsfiddle.net/AU6hq/

What happens when an item is selected in the HTML select dropdownlist?

When an item is selected in the HTML Select DropDownList, the jQuery OnChange event handler is executed within which the Text and Value of the selected item is fetched and displayed in JavaScript alert message box.