HTML | DOM Select selectedIndex Property
Last Updated :
16 Aug, 2022
The Select selectedIndex property in HTML DOM is used to set or return the index of the selected option in a drop-down list. The index of the drop-down list generally starts with 0 and returns -1 if no option is selected. This property returns the index of the first option if the drop-down list allows multiple selections.
Syntax:
- It returns the Select selectedIndex property.
selectObject.selectedIndex
- It is used to set the Select selectedIndex property.
selectObject.selectedIndex = number
Property Values: It contains single value number which is used to specify the index of the selected option in a drop-down list.
Below program illustrates the Select selectedIndex property in HTML DOM:
Example: This example uses Select selectedIndex property to select the <option> element with index “3”.
HTML
<!DOCTYPE html>
< html >
< head >
< title >
HTML DOM Select selectedIndex Property
</ title >
</ head >
< body style="text-align:center;">
< h1 style="color:green;">
GeeksforGeeks
</ h1 >
< h2 style="font-family: Impact;">
Select selectedIndex Property
</ h2 >< br >
Select your preferred course from the drop-down list:< br >
< select name="Courses Titles" id="myCourses">
< option value="C++">c++</ option >
< option value="Placement">Placement</ option >
< option value="Java">Java</ option >
< option value="Python">Python</ option >
</ select >
< p >
To select the option element with index "3",
double-click the "Return Element" button.
</ p >
< button ondblclick="myGeeks()">
Return Element
</ button >
< script >
function myGeeks() {
document.getElementById("myCourses").selectedIndex
= "3";
}
</ script >
</ body >
</ html >
|
Output:
Before Clicking the button:
After Clicking the button:
Supported Browsers: The browser supported by DOM Select selectedIndex property are listed below:
- Apple Safari
- Internet Explorer
- Firefox
- Google Chrome
- Opera
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