About Mkyong.com. The markup for this example remains the same as above. Javascript Select options. Note: If no option is selected, the selectedIndex property will return -1. Full Source. If … The following program shows how to get selected index value or selected text from a Javascript dropdownlist. Hold down the control key on Windows or command key on Mac to select multiple options. Selecting the Single element. A multiple select box allows a user to select multiple options. Assuming you have a unique list of option values, you can find the selected option by using a bit of jQuery. To select the single element, we need to use document.querySelector() method by passing a [data-attribute = 'value'] as an argument. Extract Data from an External JSON File and Bind Data to Element. Get The Data-Id By The Option Value. If the drop-down list allows multiple selections, the first selected option is returned. Note: If the drop-down list allows multiple selections it will only return the index of the first option selected. Definition and Usage. Now, we need to select the above elements by data attribute in JavaScript. A String, representing the value of the value attribute of an element in the drop-down list. Get the selected value of dropdown list using JavaScript. The following select box has some options with values, the text value of the selected option will be retrieved from this select element. For a single valued select, setting its value can be done with the value or the selectedIndex property. JavaScript – How to recover the value of a selected option in a dropdown list. - JavaScript - Get selected value from dropdown list. Also the following code will help you to select item from selection option by index number. This index starts from 0 and returns -1 if no option is selected. Also Read: How to Use AngularJS ng-options to Bind or Populate JSON Array to a SELECT DropDownList. Example: Note: Returns null if the index number is out of range: namedItem(id) Returns the element from the collection with the specified id. Similarly, you can retrieve the selected values from multiple select boxes with a little trick. Note: The value "-1" will deselect all options (if any). Full Source. The index found before it can be used with this property to get the selected element. The elements are sorted according to the source code of the page. In the example code, we will show how you can get the text value of the select using jQuery. The above option has the following information: Index = 0; Value = Hello; Text = Hello World . The selectedIndex property sets or returns the index of the selected option in a drop-down list. The second one is the text value of the select element. Note: Returns null if the id does not exist Keeping in mind what we stated above, we know that we can recover the index, the value or text. 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