Eloqua 表单查询字符串拉取 - '.value' 未定义的问题

Question

在我尝试将值设置为 utm 参数的 JS 的最后一部分。我不断收到：未捕获的类型错误：无法在 setCampaign 处设置未定义的属性“值”

var defaultHiddenFieldNameValue = "NoData";

function getQueryStringParamValue(strQStrParam) {
    var strURL = document.location.href;
    var strQStrParamValue = "";
    if (strURL.indexOf('?') != -1)
    {
        strQStrParamValue = strURL.substr(strURL.indexOf('?') + 1);
        if (strQStrParamValue.indexOf(strQStrParam) != -1)
    {
        strQStrParamValue = strQStrParamValue.substr(strQStrParamValue.indexOf(strQStrParam));
        strQStrParamValue = strQStrParamValue.substr(strQStrParamValue.indexOf('=') + 1);
        if (strQStrParamValue.indexOf('&') != -1)
        strQStrParamValue = strQStrParamValue.substr(0, strQStrParamValue.indexOf('&'));
        return strQStrParamValue;
    }else{
        strQStrParamValue = defaultHiddenFieldNameValue;
        return strQStrParamValue;
    }
    }else{
        strQStrParamValue = defaultHiddenFieldNameValue;
        return strQStrParamValue;
    }
}

var form = "BMS-CANNA-WP-FORM";          //FORM NAME ON THIS LINE

function setCampaign(){
    var elqForm = document.forms[form];
    //repeat for each field to populate
    elqForm.elements['utmCampaign'].value = getQueryStringParamValue('utm_campaign');
    elqForm.elements['utmSource'].value = getQueryStringParamValue('utm_source');
    elqForm.elements['utmMedium'].value = getQueryStringParamValue('utm_medium');
    elqForm.elements['utmContent'].value = getQueryStringParamValue('utm_content');
    elqForm.elements['utmTerm'].value = getQueryStringParamValue('utm_term');
    }

window.onload = setCampaign;

Answer 1

要么表单不存在，要么某些元素不存在。

试试：

console.log(document.forms[form])

如果这不是未定义的尝试：

console.log(document.forms[form].elements)

然后检查您的表单名称或元素名称是否正确。