javascript - JQuery 函数根据隐藏的 HTML 输入元素的值显示元素

Question

作为我的回答的序言，对于 JQUERY，我绝对是个新手。

我正在尝试创建一个 DOM 就绪函数，它采用隐藏的 HTML 输入字段的值，如果该值是 ...(某物)，则显示某个 <div>类(class)。

这是我的代码:

JS - 已更新

   $(document).ready(function(){

    var money = 19.95;

    /* not sure if this is written correctly, but this is supposed to
    check whether the hidden input element value is equal to var money */

   if ($("input[id='VAT_shipping'][type='hidden']").val() == money )  {

    $("#ac-wrapper").show(); 
    $("#popup").show();

    };

    // hide popup when user clicks on close button
    $(".close-btn").click(function(){
        $("#ac-wrapper").hide();
         // hide 
    });

    // hides the popup if user clicks anywhere outside the container
    $("#ac-wrapper").click(function(){
        $("#popup").hide();
    })

    // prevents the overlay from closing if user clicks inside the popup overlay
    $("#ac-wrapper.").click(function(e) {
    e.preventDefault();         
    var $this = $(this);
    var horizontalPadding = 30;
    var verticalPadding = 30;     
    });
});

HTML

<input type="hidden" id="VAT_shipping" value="<? print $shipping; ?>" />

<div id="ac-wrapper">
    <div id="popup">
      <center>
        <p>
       <strong> You have selected World Free Tax Zone - £19.95 for shipping. </strong>

        We will automatically remove the VAT - 20% from your order.

        Please click close to return to review your order.

        </p>
        <button class="close-btn">Close</button>
      </center>
    </div>
      </div>

CSS

#ac-wrapper {
    display:none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,.6);
    z-index: 1001;
    }
#popup {

    width: 555px;
    height: 375px;
    background: #FFFFFF;
    border: 5px solid #000;
    border-radius: 25px;
    -moz-border-radius: 25px;
    -webkit-border-radius: 25px;
    box-shadow: #64686e 0px 0px 3px 3px;
    -moz-box-shadow: #64686e 0px 0px 3px 3px;
    -webkit-box-shadow: #64686e 0px 0px 3px 3px;
    position: relative;
    top: 200px; left: 375px;
    font-size: 16px;
    font-family: 'Oxygen', sans-serif;
    text-align: center
}

    .close-btn {
        cursor: pointer;
    font-family:Tahoma, Geneva, sans-serif;
    border: 1px solid #000000;
    color: #ffffff;
    background-color: #AC9E33;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    text-shadow: 0 1px 1px #000000;
    font: bold 11px Sans-Serif;
    text-transform:none;
    padding: 7px 12px;
    margin:0;
    background-image: -webkit-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: -moz-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: -o-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: -ms-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    -webkit-transition: background-color 0.3s;
    -moz-transition: background-color 0.3s;
    -o-transition: background-color 0.3s;
    -ms-transition: background-color 0.3s;
    transition: background-color 0.3s;
}
    .close-btn:hover {
    font-family:Tahoma, Geneva, sans-serif;
    border: 1px solid #000000;
    color: #ffffff;
    background-color: #515280;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    text-shadow: 0 1px 1px #000000;
    font: bold 11px Sans-Serif;
    text-transform:none;
    padding: 7px 12px;
    margin:0;
    background-image: -webkit-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: -moz-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: -o-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: -ms-linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    background-image: linear-gradient(transparent, rgba(0, 0, 0, 0.2));
    -webkit-transition: background-color 0.3s;
    -moz-transition: background-color 0.3s;
    -o-transition: background-color 0.3s;
    -ms-transition: background-color 0.3s;
    transition: background-color 0.3s;
}

因此 jQuery 函数检查 shipping 的值输入字段，如果它等于 var money = 19.95然后是 ac-wrapper并嵌套 popup显示。然后，客户端可以使用“close-btn”或单击元素外部来关闭此窗口。

请有人解释一下如何做到这一点。

Answer 1

你的第一个问题是

if ($("input[name='shipping']").val(money); )  {

应该是

if ($("input[id='shipping']").val() == money )  {

或

    if ($("input[id='shipping'][type='hidden']").val() == money )  {