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我有一个带有“onchange”功能的下拉列表，可以根据用户输入加载 Marketo 表单。表单加载正确，除了当用户最初选择“需要新产品”然后切换到“需要支持”（反之亦然）时，“产品表单”不会消失。取而代之的是，“产品表单”保持不变，并且另外加载了“需要支持”表单（在产品表单下方）。用户可以多次切换/触发器导致许多额外的表单，这是一个问题！

我需要帮助调整代码，以便始终只加载一个表单，并且当用户触发器时用户选择的先前表单不再存在。有什么帮助吗？？谢谢！

<script src="//app-e.marketo.com/js/forms2/js/forms2.js"></script>

<p>How can we help?</p>
<select id="mySelect" onchange="myFunction()">
  <option value="default">--please select a reason--</option>
  <option value="product">Need a new product</option>
  <option value="support">Need support</option>
</select>


<p id="demo"></p>
<script>
function myFunction() {
    var x = document.getElementById("mySelect").value;
    document.getElementById("demo").innerHTML = "You selected: " + x;
    if (x == "product") {
        MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber", *uniquenumber);
    }
    else if (x == "support") {
        MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
    }
}
</script>

<form id="mktoForm_*uniquenumber1"></form>
<form id="mktoForm_*uniquenumber2"></form>
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1 回答 1

3

我推荐以下内容：

  1. 实现一种方法来检查 Marketo 表单是否已加载。例如：

    //Checks for element that matches "mktoForm_". If match, variable returns id of element. If no match, variable returns undefined. 
var y = document.querySelector('[id^=mktoForm_]').id;

  2. 实施一种删除 Marketo 表单的方法。例如：

    //jQuery implementation to remove form element
$( "form" ).remove();

  3. 实施条件逻辑以确定当前状态。例如：

    if (x == "product" && y === undefined) {
    MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber", *uniquenumber);
}
else if (x == "product" && y != undefined) {
    //jQuery implementation to remove form element
    $( "form" ).remove();
    MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
}
else if (x == "support" && y === undefined) {
    MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
}
else (x == "support" && y != undefined) {
    //jQuery implementation to remove form element
    $( "form" ).remove();
    MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
}

这是一个潜在的实现：

<script>
function myFunction() {
    var x = document.getElementById("mySelect").value;
    //Checks for element that matches "mktoForm_". If no match, variable returns undefined. 
    var y = document.querySelector('[id^=mktoForm_]').id;
    document.getElementById("demo").innerHTML = "You selected: " + x;

    if (x == "product" && y === undefined) {
        MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber", *uniquenumber);
    }
    else if (x == "product" && y != undefined) {
        //jQuery implementation to remove form element
        $( "form" ).remove();
        MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
    }
    else if (x == "support" && y === undefined) {
        MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
    }
    else (x == "support" && y != undefined) {
        //jQuery implementation to remove form element
        $( "form" ).remove();
        MktoForms2.loadForm("//app-e.marketo.com", "*uniquenumber2", *uniquenumber2);
    }
}
</script>
于 2014-11-04T00:22:31.263 回答