Question

我试图在用户点击选择中的选项时发出提醒。

NSError *jsonError;
NSData *objectData = [@"{\n      \"GCM\":{\n        \"data\":{\n          \"notificationType\":\"order\",\n          \"oid\":\"CRN14333313\",\n          \"c\":\"allocated\",\n          \"f\":\"253.633333333333\"   }\n      }\n    }" dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:objectData
                                                     options:NSJSONReadingMutableContainers
                                                       error:&jsonError];
NSLog(@"dictionary is : %@",json);

你会怎么做？

Answer 1

始终直接挂钩change的{{1}}事件，否则只使用键盘浏览网页的用户无法激活JS收听的事件。

select

Answer 2

只需使用以下代码：

//*[contains(., 'v_search')]
 /ancestor-or-self::*
 /*[local-name()='name' and @locale='en']
    |
//*[text()[contains(.,'v_search')]]
 /following-sibling::*
 /*[local-name()='name' and @locale='en']

Answer 3

以下是您的操作方法：

$(document).ready(function() {
  $('#Menunavigation').on('change', function() {
    alert('You selected - ' + $(this).val())
  })
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="Menunavigation" class="cs-select cs-skin-slide">
  <option value="Home" data-class="icon-home-cod">Start</option>
  <option value="About" data-class="icon-about-cod">About</option>
  <option value="Services" data-class="icon-services-cod">Start</option>
  <option value="Work" data-class="icon-work-cod">Work</option>
  <option value="Contact" data-class="icon-contact-cod">contact</option>
</select>

Answer 4

您需要在change事件上附加您的功能，如下所示：

＆＃13;

$('#Menunavigation').on('change', function() {
  alert('Worked.');
});

// Or slightly shorter version
$('#Menunavigation').change(function() {
  alert('Worked.');
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<select id="Menunavigation" class="cs-select cs-skin-slide">
    <option  value="Home" data-class="icon-home-cod">Start</option>
    <option  value="About" data-class="icon-about-cod">About</option>
    <option  value="Services" data-class="icon-services-cod">Start</option>
    <option  value="Work" data-class="icon-work-cod">Work</option>
    <option  value="Contact" data-class="icon-contact-cod">contact</option>
</select>

＆＃13;

选择中的onclick或onchange

4 个答案: