如何從html中選擇一個字符串值選擇使用Jquery JSP選項

Question

<select name="state_name" id="select-state" class="lcd-select lcd-border"> 
    <option value="state_select" selected>Please Select a State</option> 
    <% while(state_result.next()){ %> 
    <option> 
     <%= state_part1 = state_result.getString("state_abbr")%>     
     <%= state_part2 = state_result.getString("state_name")%> 
    </option> 
    <% } %> 
</select> 

我需要使用javaScript選擇第二個字符串嗎？ 請大家幫幫我。 在此先感謝。

Answer 1

我的建議是：

<select name="state_name" id="select-state" class="lcd-select lcd-border"> 
    <option value="state_select" selected>Please Select a State</option> 
    <% while(state_result.next()) { %> 
    <option value="<%= state_result.getString("state_abbr") %>"> 
     <%= state_result.getString("state_abbr") %>     
     <%= state_result.getString("state_name") %> 
    </option> 
    <% } %> 
</select> 
... 
<script> 
function onLCDLookUp() { 
    var select = $('#select-state')[0]; 
    // https://msdn.microsoft.com/en-us/library/ms534624(v=vs.85).aspx 
    var selected = select.options[select.selectedIndex]; 
    var abbr = selected.value; 
    // https://msdn.microsoft.com/en-us/library/ms534679(v=vs.85).aspx 
    var name = selected.text.trim().slice(abbr.length); 
    alert(name); 
} 
</script>