點擊更新所有表格下拉列表項目

Question

我想單擊按鈕時添加一個按鈕到列將當前頁面上的所有其他下拉項目設置爲所做的選擇。

JSFiddle

<select class="select2 select2-offscreen" id="id[0]" name="id[0]"> 
<option value="not received">Not Received</option> 
<option value="received">Received</option> 
</select> 

<select class="select2 select2-offscreen" id="id[1]" name="id[1]"> 
<option value="not received">Not Received</option> 
<option value="received">Received</option> 
</select> 

<select class="select2 select2-offscreen" id="id[2]" name="id[2]"> 
<option value="not received">Not Received</option> 
<option value="received">Received</option> 
</select> 

<button class="go-btn" type="submit">Update All</button> 

JS：

$('.go-btn').click(function() { 

     $("select option").each(function() { 
      //how to update the dropdow? 
     }); 
}); 

Answer 1

這是你在找什麼？ https://jsfiddle.net/zmbagh9h/3/

var lastSelectedValue = 'not received'; 

$('select').change(function() { 
    lastSelectedValue = this.value; 
}); 

$('.go-btn').click(function() { 
    $('select').val(lastSelectedValue); 
});