如何使用数据 - 属性

Question

如何设置使用数据 - 属性选择HTML标签的选项设置选择HTML标签的选项？

HTML

<select class="form-control shade_custom_option valid" id="1"> 
    <option data-isnone="true" selected="selected" value="1">None</option> 
    <option data-isnone="false" value="2">Text1</option> 
    <option data-isnone="false" value="3">Text2</option> 
</select> 

<select class="form-control shade_custom_option valid" id="2"> 
    <option data-isnone="true" selected="selected" value="1">None</option> 
    <option data-isnone="false" value="2">Text1</option> 
    <option data-isnone="false" value="3">Text2</option> 
</select> 

JS

$(".shade_custom_option").each(function (index, value) { 
    // var optionSelected = $("option:selected", value); 
    // How to get option with data-isnone="true"? and set it as selected option. 
}); 

Answer 1

设置select值匹配option的价值：

$(".shade_custom_option").each(function (index, value) { 
    $(this).val($(this).find('option[data-isnone=true]').val()); 
});