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我希望根据为我正在构建的网页选择的选项自动填写表单并计算总数。我是 javascript 新手，在此站点上找到了以下代码示例，但无法修改它以使其按我的意愿工作。任何帮助，将不胜感激。复选框将计算但不是选择列表。

<html>
    <head>
        <script type = "text/javascript">
            var allprices = [];
            var index = 0;

            function chkrads(frmName,rbGroupName) {
                var chosen = "";
                var radios = document[frmName].elements[rbGroupName];
                for (var i=0; i <radios.length; i++) {
                    if (radios[i].checked) {
                        chosen = radios[i].value;
                    }
                }

                if (chosen == 0) {printprice = 0}
                if (chosen == 1) {printprice = 99}
                if (chosen == 2) {printprice = 150}
                if (chosen == 3) {printprice = 250}
                if (chosen == 21) {printprice = 200}
                if (chosen == 22) {printprice = 300}    
                if (chosen == 30) {printprice = 50}    
                if (chosen == 41) {printprice = 50}
                if (chosen == 42) {printprice = 70}
                if (chosen == 43) {printprice = 90}
                if (rbGroupName == "size") {index = 0}
                if (rbGroupName == "colour") {index = 1}
                if (rbGroupName == "frame") {index = 2}
                if (rbGroupName == "glass") {index = 3}
                if (rbGroupName == "hook") {index = 4}
                if (rbGroupName == "delivery") {index = 5}

                allprices[index] = printprice;

                var totalprice = 0;
                for (var i =0; i <allprices.length; i++) {
                    if (!isNaN(allprices[i])) {
                        totalprice = totalprice + allprices[i];
                    }
                }

                document.getElementById("result").style.display = "block";
                document.getElementById("result").innerHTML = totalprice;
            }
        </script>
    </head>
    <body>
        <form name= "myform" style="font-size:11px; font-family:Arial, Helvetica, sans-serif;">
            <select name = "size" onchange = "chkrads('myform', 'size')">
                <option></option>
                <option value = "0">0</option>
                <option value = "1">1</option>
            </select>
            </option><br>
            <br /><br /><br /><br />

            <input type = "radio" name = "colour" value = "0" onclick = "chkrads('myform', 'colour')"><b>No</b>
            <input type = "radio" name = "colour" value = "21" onclick = "chkrads('myform', 'colour')"><b>black</b>
            <input type = "radio" name = "colour" value = "22" onclick = "chkrads('myform','colour')"><b>Multi Colour</b>

            <br /><br /><br /><br />

            <input type = "radio" name = "frame" value = "0" onclick = "chkrads('myform', 'logo')">    <b>No</b>
            <input type = "radio" name = "frame" value = "30" onclick = "chkrads('myform', 'logo')"><b>Yes</b>
            <br /><br /><br /><br />

            <input type = "radio" name = "glass" value = "0" onclick = "chkrads('myform', 'glass')"><b>No</b>
            <input type = "radio" name = "glass" value = "51" onclick = "chkrads('myform',     'glass')"><b>Yes</b>

            <br /><br /><br /><br />

            <input type = "radio" name = "hook" value = "0" onclick = "chkrads('myform', 'hook')">    <b>0</b>
            <input type = "radio" name = "hook" value = "41" onclick = "chkrads('myform', 'hook')">    <b>1</b>
            <input type = "radio" name = "hook" value = "42" onclick = "chkrads('myform', 'hook')">    <b>2</b>
            <input type = "radio" name = "hook" value = "43" onclick = "chkrads('myform', 'hook')">    <b>3</b>

            <br /><br /><br /><br />

            <input type = "radio" name = "delivery" value = "0" onclick = "chkrads('myform',     'delivery')"><b>No</b>
            <input type = "radio" name = "delivery" value = "61" onclick = "chkrads('myform',     'delivery')"><b>Yes</b>

        </form>


        <div id="result" style="display:none;"><strong></strong> <span id="totalprice"></span>     </div>

    </body>
</html>
4

1 回答 1

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所以问题是这个语句：

if (radios[i].checked) {
        chosen = radios[i].value;

如果元素是复选框，则仅设置“选择”。

试试这个：

if (radios[i].checked || radios[i].selected) {
        chosen = radios[i].value;

我设置了一个jsfiddle：

http://jsfiddle.net/ARqQr/3/

附带说明一下，这看起来很容易使用knockoutjs解决，并且可能会稍微整理一下代码......

于 2013-04-30T14:29:17.467 回答