Javascript 响应表不显示列值

缩小浏览器窗口后，您将在iphone屏幕布局中看到不同的表格布局

当列具有值时，我的响应表代码工作正常。。。。 但是，当我的响应表没有列haves时，不会显示相应的列….

在下面提供我的代码

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这是HTML表中许多奇怪的夸克之一。当您没有内容放入单元格时，只需将内容设置为

我开始这样做，但您的代码很长，而且很混乱。除非有人来，否则你只能靠自己了。

table { 
        width: 100%; 
        border-collapse: collapse; 
    }
    /* Zebra striping */
    tr:nth-of-type(odd) { 
        background: #eee; 
    }
    th { 
        background: #1a4567; 
        color: white; 
        font-weight: bold; 
    }
    td, th { 
        padding: 6px; 
        border: 1px solid #ccc; 
        text-align: left; 
    }

    /* 
    Max width before this PARTICULAR table gets nasty
    This query will take effect for any screen smaller than 760px
    and also iPads specifically.
    */
    @media 
    only screen and (max-width: 760px),
    (min-device-width: 768px) and (max-device-width: 1024px)  {

        /* Force table to not be like tables anymore */
        table, thead, tbody, th, td, tr { 
            display: block; 
        }

        /* Hide table headers (but not display: none;, for accessibility) */
        thead tr { 
            position: absolute;
            top: -9999px;
            left: -9999px;
        }

        tr { border: 1px solid #ccc; }

        td { 
            /* Behave  like a "row" */
            border: none;
            border-bottom: 1px solid #eee; 
            position: relative;
            padding-left: 50%; 
        }

        td:before { 
            /* Now like a table header */
            position: static;
            /* Top/left values mimic padding */
            top: 6px;
            left: 6px;
            width: 45%; 
            padding-right: 10px; 
            white-space: nowrap;
        }


        /*
        Label the data
        */
        td:nth-of-type(1):before { content: "MFG P/N"; }
        td:nth-of-type(2):before { content: "MFG Name"; }
        td:nth-of-type(3):before { content: "Part ID"; }
        td:nth-of-type(4):before { content: "Description"; }
        td:nth-of-type(5):before { content: "Cost"; }
        td:nth-of-type(6):before { content: "Price"; }
        td:nth-of-type(7):before { content: "On Hand"; }
        td:nth-of-type(8):before { content: "On Order"; }
        td:nth-of-type(9):before { content: "Allocated"; }
        td:nth-of-type(10):before { content: "Shipped"; }
        td:nth-of-type(11):before { content: "Report"; }
        td:nth-of-type(12):before { content: "RMA"; }
        td:nth-of-type(10):before { content: "File"; }
        td:nth-of-type(10):before { content: "Add Part"; }
    }

    /* Smartphones (portrait and landscape) ----------- */
    @media only screen
    and (min-device-width : 320px)
    and (max-device-width : 480px) {
        body { 
            padding: 0; 
            margin: 0; 
            width: 320px; }
        }

    /* iPads (portrait and landscape) ----------- */
    @media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
        body { 
            width: 495px; 
        }
    }