需要有关嵌套 jquery 函数的帮助

发布于 2024-09-09 16:15:04 字数 1511 浏览 2 评论 0原文

请在下面找到我的代码。我的问题是我内部的 jQuery.get() 没有被执行。有人可以帮我解决这个问题吗？

jQuery(document).ready(function() { 
   $('.error').hide();  
   $(".button").click(function() {  
    // validate and process form here
      $('.error').hide();  
      var zipCode = $("input#name").val();  
      if (zipCode == "") {  
        $("label#name_error").show();  
        $("input#name").focus();  
        return false;  
      }
    var key = 'ac9c073a8e025308101307';
    var noOfDays = 5;
    var url = 'http://www.worldweatheronline.com/feed/weather.ashx?q=' + zipCode + '&format=json&num_of_days=' + noOfDays + '&key=' + key;
    alert(url); 
    jQuery.get(url, function(test) { 
    alert(url); 
        $.each(test.data.weather, function(i, item){
        $("body").append("<p>Date: "+item.date+"</p>");
        if ( i == 3 ) return false;
  }); }, 'jsonp')();
});  
});

我的 html 表单看起来

<div id="contact_form">  
 <form name="contact" action="">  
   <fieldset>  
     <label for="name" id="name_label">Name</label>  
     <input type="text" name="name" id="name" size="30" value="" class="text-input" />  
     <label class="error" for="name" id="name_error">This field is required.</label>  

     <br />  
     <input type="submit" name="submit" class="button" id="submit_btn" value="Send" />  
   </fieldset>  
 </form>  
</div>

非常感谢任何指点。

谢谢！

原文

Please find my code below. My problem is that I the inner jQuery.get() doesn't get executed. Could some one help me out with this?

jQuery(document).ready(function() { 
   $('.error').hide();  
   $(".button").click(function() {  
    // validate and process form here
      $('.error').hide();  
      var zipCode = $("input#name").val();  
      if (zipCode == "") {  
        $("label#name_error").show();  
        $("input#name").focus();  
        return false;  
      }
    var key = 'ac9c073a8e025308101307';
    var noOfDays = 5;
    var url = 'http://www.worldweatheronline.com/feed/weather.ashx?q=' + zipCode + '&format=json&num_of_days=' + noOfDays + '&key=' + key;
    alert(url); 
    jQuery.get(url, function(test) { 
    alert(url); 
        $.each(test.data.weather, function(i, item){
        $("body").append("<p>Date: "+item.date+"</p>");
        if ( i == 3 ) return false;
  }); }, 'jsonp')();
});  
});

My html form looks like

<div id="contact_form">  
 <form name="contact" action="">  
   <fieldset>  
     <label for="name" id="name_label">Name</label>  
     <input type="text" name="name" id="name" size="30" value="" class="text-input" />  
     <label class="error" for="name" id="name_error">This field is required.</label>  

     <br />  
     <input type="submit" name="submit" class="button" id="submit_btn" value="Send" />  
   </fieldset>  
 </form>  
</div>

I'd really appreciate any pointers.

Thanks!

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三五鸿雁 2024-09-16 16:15:04

您遇到的问题是，您没有采取任何措施来阻止表单的提交，因此它会在有机会从 worldweatheronline.com 获取数据之前提交表单。

将您的点击处理程序更改为如下所示：

    $(".button").click(function(event) { 
        event.preventDefault();

这是我完成的示例代码，它可以按照您希望的方式工作：

<html>
<head>
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js'></script>
<script type='text/javascript'>
    jQuery(document).ready(function() { 
        $('.error').hide();  
        $(".button").click(function(event) { 
            event.preventDefault();
            // validate and process form here
            $('.error').hide();  
            var zipCode = $("input#name").val();  
            if (zipCode == "") {  
                $("label#name_error").show();  
                $("input#name").focus();  
                return false;  
            }
            var key = 'ac9c073a8e025308101307';
            var noOfDays = 5;
            var url = 'http://www.worldweatheronline.com/feed/weather.ashx?q=' + zipCode + '&format=json&num_of_days=' + noOfDays + '&key=' + key;

            alert('first'+url); 

            jQuery.get(url, function(test) { 
                alert(url); 
                $.each(test.data.weather, function(i, item){
                    $("body").append("<p>Date: "+item.date+"</p>");
                    if ( i == 3 ){
                        return false;
                    }
                }); 
            }, 'jsonp');
        });  
    });
</script>
</head>
<body>
<div id="contact_form">  
 <form name="contact" action="">  
   <fieldset>  
     <label for="name" id="name_label">Name</label>  
     <input type="text" name="name" id="name" size="30" value="" class="text-input" />  
     <label class="error" for="name" id="name_error">This field is required.</label>  

     <br />  
     <input type="submit" name="submit" class="button" id="submit_btn" value="Send" />  
   </fieldset>  
 </form>  
</div>  
</body>
</html>

The problem you are experiencing is that you dont do anything to stop your form from being submitted, thus it submits the form before it gets a chance to get the data from the worldweatheronline.com.

Change your click handler to be like this:

    $(".button").click(function(event) { 
        event.preventDefault();

Here is my completed sample code that works the way you want it to:

<html>
<head>
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js'></script>
<script type='text/javascript'>
    jQuery(document).ready(function() { 
        $('.error').hide();  
        $(".button").click(function(event) { 
            event.preventDefault();
            // validate and process form here
            $('.error').hide();  
            var zipCode = $("input#name").val();  
            if (zipCode == "") {  
                $("label#name_error").show();  
                $("input#name").focus();  
                return false;  
            }
            var key = 'ac9c073a8e025308101307';
            var noOfDays = 5;
            var url = 'http://www.worldweatheronline.com/feed/weather.ashx?q=' + zipCode + '&format=json&num_of_days=' + noOfDays + '&key=' + key;

            alert('first'+url); 

            jQuery.get(url, function(test) { 
                alert(url); 
                $.each(test.data.weather, function(i, item){
                    $("body").append("<p>Date: "+item.date+"</p>");
                    if ( i == 3 ){
                        return false;
                    }
                }); 
            }, 'jsonp');
        });  
    });
</script>
</head>
<body>
<div id="contact_form">  
 <form name="contact" action="">  
   <fieldset>  
     <label for="name" id="name_label">Name</label>  
     <input type="text" name="name" id="name" size="30" value="" class="text-input" />  
     <label class="error" for="name" id="name_error">This field is required.</label>  

     <br />  
     <input type="submit" name="submit" class="button" id="submit_btn" value="Send" />  
   </fieldset>  
 </form>  
</div>  
</body>
</html>

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丢了幸福的猪 2024-09-16 16:15:04

打开 Fiddler 或 Firebug 并观察 HTTP 调用。您将在那里看到 HTTP 错误消息。另外，请在 Chrome 或 Firefox 中打开控制台以查看潜在的 JavaScript 错误。

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小伙你站住 2024-09-16 16:15:04

部分问题可能是 .get() 函数调用后的额外括号。你有：

jQuery.get(url, function(test) { 
    alert(url); 
    $.each(test.data.weather, function(i, item){
    $("body").append("<p>Date: "+item.date+"</p>");
    if ( i == 3 ) return false;
}); }, 'jsonp')();

应该是：

jQuery.get(url, function(test) { 
    alert(url); 
    $.each(test.data.weather, function(i, item){
        $("body").append("<p>Date: "+item.date+"</p>");
        if ( i == 3 ) return false;
    }); 
}, 'jsonp');

Part of the problem could be the extra set of parentheses after your .get() function call. You have:

jQuery.get(url, function(test) { 
    alert(url); 
    $.each(test.data.weather, function(i, item){
    $("body").append("<p>Date: "+item.date+"</p>");
    if ( i == 3 ) return false;
}); }, 'jsonp')();

It should be:

jQuery.get(url, function(test) { 
    alert(url); 
    $.each(test.data.weather, function(i, item){
        $("body").append("<p>Date: "+item.date+"</p>");
        if ( i == 3 ) return false;
    }); 
}, 'jsonp');

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