我在Firefox（VER 50.0.2）和Safari浏览器（VER 9.1）中遇到困难。它在IE和Chrome中表现良好。我使用的代码是Google Recaptcha文档中的示例代码。我将以下示例代码保存到HTML文件中（并将其命名为myrecaptcha.html）。我已经用自己的站点密钥替换了" my_own_site_key"。我试图用此链接显示" 127.0.0.1/myrecaptcha.html"。它在IE和Chrome中表现良好，但在Firefox和Safari中不显示。请帮忙。谢谢。
<html>
<head>
<title>reCAPTCHA demo: Simple page</title>
<script src="https://www.google.com/recaptcha/api.js" async defer></script>
</head>
<body>
<form action="?" method="POST">
<div class="g-recaptcha" data-sitekey="my_own_site_key"></div>
<br/>
<input type="submit" value="Submit">
</form>
</body>
</html>
P.S。这是我在Chrome浏览器中看到的。但是我看不到Firefox。
经过几天的挣扎，我想我想到了为什么会发生。我正在公司的Intranet上运行Recpatcha。在我的FF中， *.google.com的证书显示为我公司发行的。因此，如果我在公司的Intranet上运行recaptcha代码，我将不会看到recaptcha。但是，如果我在互联网上运行recaptcha，我会看到它。因此，是我公司的安全策略阻止了Recaptcha的出现。
显然这是一个已知问题，带有窗口小部件的https:版本。这个演示在Firefox
https://secure.jotformpro.com/form/50145268709963
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="alternate" type="application/json+oembed" href="https://www.jotform.com/oembed/?format=json&url=http%3A%2F%2Fwww.jotform.com%2Fform%2F50145268709963" title="oEmbed Form"><link rel="alternate" type="text/xml+oembed" href="https://www.jotform.com/oembed/?format=xml&url=http%3A%2F%2Fwww.jotform.com%2Fform%2F50145268709963" title="oEmbed Form">
<meta property="og:title" content="Google - Recaptcha demo" >
<meta property="og:url" content="http://www.jotformpro.com/form/50145268709963" >
<meta property="og:description" content="Please click the link to complete this form.">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
<meta name="HandheldFriendly" content="true" />
<title>Google - Recaptcha demo</title>
<link href="https://cdn.jotfor.ms/static/formCss.css?3.3.15949" rel="stylesheet" type="text/css" />
<link type="text/css" rel="stylesheet" href="https://cdn.jotfor.ms/css/styles/nova.css?3.3.15949" />
<link type="text/css" media="print" rel="stylesheet" href="https://cdn.jotfor.ms/css/printForm.css?3.3.15949" />
<style type="text/css">
.form-label-left{
width:150px !important;
}
.form-line{
padding-top:12px;
padding-bottom:12px;
}
.form-label-right{
width:150px !important;
}
body, html{
margin:0;
padding:0;
background:false;
}
.form-all{
margin:0px auto;
padding-top:20px;
width:690px;
color:#555 !important;
font-family:"Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Verdana, sans-serif;
font-size:14px;
}
</style>
<script src="https://cdn.jotfor.ms/static/prototype.forms.js" type="text/javascript"></script>
<script src="https://cdn.jotfor.ms/static/jotform.forms.js?3.3.15949" type="text/javascript"></script>
<script src="https://js.jotform.com/vendor/postMessage.js?3.3.15949" type="text/javascript"></script>
<script src="https://js.jotform.com/WidgetsServer.js?v=1481065067325" type="text/javascript"></script>
<script type="text/javascript">
JotForm.init(function(){
setTimeout(function() {
$('input_5').hint('ex: myname@example.com');
}, 20);
JotForm.clearFieldOnHide="disable";
JotForm.onSubmissionError="jumpToFirstError";
});
</script>
</head>
<body>
<form class="jotform-form" action="https://submit.jotformpro.com/submit/50145268709963/" method="post" name="form_50145268709963" id="50145268709963" accept-charset="utf-8">
<input type="hidden" name="formID" value="50145268709963" />
<div class="form-all">
<ul class="form-section page-section">
<li class="form-line" data-type="control_textbox" id="id_4">
<label class="form-label form-label-left form-label-auto" id="label_4" for="input_4"> Name </label>
<div id="cid_4" class="form-input jf-required">
<input type="text" class=" form-textbox" data-type="input-textbox" id="input_4" name="q4_name" size="20" value="" />
</div>
</li>
<li class="form-line jf-required" data-type="control_email" id="id_5">
<label class="form-label form-label-left form-label-auto" id="label_5" for="input_5">
E-mail
<span class="form-required">
*
</span>
</label>
<div id="cid_5" class="form-input jf-required">
<input type="email" class=" form-textbox validate[required, Email]" id="input_5" name="q5_email5" size="30" value="" />
</div>
</li>
<li class="form-line jf-required" data-type="control_widget" id="id_6">
<label class="form-label form-label-left form-label-auto" id="label_6" for="input_6">
Recaptcha
<span class="form-required">
*
</span>
</label>
<div id="cid_6" class="form-input jf-required">
<div style="width:100%; text-align:Left;">
<iframe onload="widgetFrameLoaded(6)" frameborder="0" scrolling="no" allowTransparency="true" data-type="iframe" class="custom-field-frame" id="customFieldFrame_6" src="" style="border:none;width:310px;height:85px;" data-width="310" data-height="85">
</iframe>
<div class="widget-inputs-wrapper">
<input id="input_6" class="form-hidden form-widget widget-required " type="hidden" name="q6_recaptcha" value="" />
<input id="widget_settings_6" class="form-hidden form-widget-settings" type="hidden" value="%5B%7B%22name%22%3A%22theme%22%2C%22value%22%3A%22light%22%7D%2C%7B%22name%22%3A%22fallback%22%2C%22value%22%3A%22false%22%7D%5D" data-version="2" />
</div>
<script type="text/javascript">
setTimeout(function()
{
var _cFieldFrame = document.getElementById("customFieldFrame_6");
_cFieldFrame.src = "//dev-data-widgets.jotform.io/kenneth/noCaptchaRecaptcha/?qid=6&ref=" + encodeURIComponent(window.location.protocol + "//" + window.location.host);
_cFieldFrame.addClassName("custom-field-frame-rendered");
}, 0);
</script>
</div>
</div>
</li>
<li class="form-line" data-type="control_button" id="id_2">
<div id="cid_2" class="form-input-wide">
<div style="margin-left:156px;" class="form-buttons-wrapper">
<button id="input_2" type="submit" class="form-submit-button" data-component="button">
Submit
</button>
</div>
</div>
</li>
<li style="display:none">
Should be Empty:
<input type="text" name="website" value="" />
</li>
</ul>
</div>
<input type="hidden" id="simple_spc" name="simple_spc" value="50145268709963" />
<script type="text/javascript">
document.getElementById("si" + "mple" + "_spc").value = "50145268709963-50145268709963";
</script>
<script src="https://cdn.jotfor.ms/js/widgetResizer.js?REV=3.3.15949" type="text/javascript"></script>
</form></body>
</html>