chrome 不能实现option的onclick事件

改用onchange事件

<select name="history" id="history" onchange="historyChanged(this);">
 <option value="history1">history 1</option>
 <option value="history2">history 2</option>
 <option value="clearhistory">Clear History</option>
</select>

function historyChanged() {

    var historySelectList = $('select#history');
    var selectedValue = $('option:selected', historySelectList).val();


    alert(selectedValue);


    if (selectedValue == 'clearHistory') {
        historySelectList.form.submit();
    }
}