Change document.getElementById('personlist').getElementsByTagName('option')[11].selected = 'selected'. to document. ... <看更多>

Summary · The <select> element allows you to select one or multiple options. Add the multiple attribute to the <select> element to enable multiple selections. ... <看更多>

<label >Select: <select id="selectMode"> <option value="1">option_01</option> <option value="2">option_02</option> ... <看更多>

I ran into some confusing behavior regarding selecting an option and I was hoping for some clarification on how to use the API. ... <看更多>