netsyms-captcheck/captcheck.js

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JavaScript
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window.onload = function () {
var api_url = "https://captcheck.netsyms.com/api.php";
function chooseAnswer(idp, ans) {
var box = document.getElementById("captcheck_" + idp + "_answer_" + ans);
box.checked = true;
return false;
}
function switchMode(idp) {
var switch_label = document.getElementById("captcheck_" + idp + "_alt_question_button");
var img_q = document.getElementById("captcheck_" + idp + "_question_image");
var acc_q = document.getElementById("captcheck_" + idp + "_question_access");
var img_a = document.getElementById("captcheck_" + idp + "_answer_images");
var acc_a = document.getElementById("captcheck_" + idp + "_answer_access");
if (switch_label.innerHTML == "> Text mode") {
switch_label.innerHTML = "> Image mode";
img_q.style.display = "none";
acc_q.style.display = "initial";
img_a.style.display = "none";
acc_a.style.display = "initial";
acc_a.innerHTML = "<input type='text' name='captcheck_selected_answer' aria-label='Type your answer here.' autocomplete='off' autofill='off'/>";
} else {
switch_label.innerHTML = "&gt; Text mode";
img_q.style.display = "initial";
acc_q.style.display = "none";
img_a.style.display = "initial";
acc_a.style.display = "none";
acc_a.innerHTML = "";
}
}
var nonce = "";
/* Loop over all the CAPTCHA containers on the page, setting up a different CAPTCHA in each */
Array.prototype.forEach.call(document.getElementsByClassName("captcheck_container"), function (container) {
if (container.dataset.stylenonce) {
nonce = container.dataset.stylenonce;
}
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var xhr = new XMLHttpRequest();
xhr.open('GET', api_url + "?action=new", true);
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xhr.onreadystatechange = function () {
if (this.readyState == 4) {
var status = this.status;
var json = this.responseText;
/* Create captcha div */
var captcha = document.createElement("div");
captcha.setAttribute("class", "captcheck_box");
container.appendChild(captcha);
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if (status == 200) {
var data = JSON.parse(json);
// ID prefix to use for this instance
var idp = data.id_prefix;
/* Create answer buttons */
var answers = "<div class='captcheck_answer_images' id='captcheck_" + idp + "_answer_images'>";
for (var i = 0, len = data.answers.length; i < len; i++) {
var src = api_url + "?action=img&s=" + data.session + "&c=" + data.answers[i];
answers += "<a class='captcheck_answer_label' href='' data-prefix='" + idp + "' data-answer='" + data.answers[i] + "' tabindex='0' aria-role='button'><input id='captcheck_" + idp + "_answer_" + data.answers[i] + "' type='radio' name='captcheck_selected_answer' value='" + data.answers[i] + "' data-prefix='" + idp + "' data-answer='" + data.answers[i] + "' /><img src='" + src + "' data-prefix='" + idp + "' data-answer='" + data.answers[i] + "'/></a>";
}
answers += "</div>";
var answer_div = document.createElement("div");
answer_div.innerHTML = answers + "<div class='captcheck_answer_access' id='captcheck_" + idp + "_answer_access'></div>";
/* Create question */
var question_div = document.createElement("div");
question_div.setAttribute("class", "captcheck_label_message");
question_div.setAttribute("id", "captcheck_" + idp + "_label_message")
question_div.innerHTML = "<span class='captcheck_question_image' id='captcheck_" + idp + "_question_image'>" + data.question_i + "</span><span class='captcheck_question_access' id='captcheck_" + idp + "_question_access'>" + data.question_a + "</span><a href='' class='captcheck_alt_question_button' data-prefix='" + idp + "' id='captcheck_" + idp + "_alt_question_button' aria-role='button' aria-label='Switch between image and text question' tabindex='0'>&gt; Text mode</a>";
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/* Add question and answers */
captcha.appendChild(question_div);
captcha.appendChild(answer_div);
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/* Add hidden session ID element */
var skey_input = document.createElement("span");
skey_input.innerHTML = "<input type='hidden' name='captcheck_session_code' value='" + data.session + "' />";
captcha.appendChild(skey_input);
var answer_buttons = document.querySelectorAll(".captcheck_answer_label[data-prefix=\"" + idp + "\"]");
for (var i = 0; i < answer_buttons.length; i++) {
answer_buttons[i].addEventListener("click", function (ev) {
chooseAnswer(ev.target.getAttribute("data-prefix"), ev.target.getAttribute("data-answer"));
ev.preventDefault();
});
answer_buttons[i].addEventListener('keydown', function (ev) {
if (ev.key === "Enter" || ev.which === 13 || ev.keyCode === 13 || ev.key === ' ' || ev.which === 32 || ev.keyCode === 32) {
chooseAnswer(ev.target.getAttribute("data-prefix"), ev.target.getAttribute("data-answer"));
ev.preventDefault();
}
});
}
document.querySelector(".captcheck_alt_question_button[data-prefix=\"" + idp + "\"]").addEventListener("click", function (ev) {
switchMode(ev.target.getAttribute("data-prefix"));
ev.preventDefault();
});
document.querySelector(".captcheck_alt_question_button[data-prefix=\"" + idp + "\"]").addEventListener('keydown', function (ev) {
if (ev.key === "Enter" || ev.which === 13 || ev.keyCode === 13 || ev.key === ' ' || ev.which === 32 || ev.keyCode === 32) {
switchMode(ev.target.getAttribute("data-prefix"));
ev.preventDefault();
}
});
} else {
/* Add error message */
captcha.innerHTML = "<span class='captcheck_error_message'>There was a problem loading the CAPTCHA.</span>";
}
}
};
xhr.send();
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});
/* Add custom styles */
var styles = document.createElement('style');
if (nonce != "") {
styles.setAttribute("nonce", nonce);
}
/* Remove newlines/comments from captcheck.css and put it here */
styles.innerHTML = ".captcheck_box{font-family:Ubuntu,Arial,sans-serif;color:black;border:1px solid #e0e0e0;border-radius:3px;display:inline-block;padding:3px;margin:5px 2px 5px 1px;background-color:#f5f5f5;text-decoration:none}.captcheck_label_message,.captcheck_label_message b{color:black;font-family:Ubuntu,Roboto,Arial,sans-serif}.captcheck_answer_label{border:0}.captcheck_answer_label>input{visibility:hidden;position:absolute}.captcheck_answer_label>input+img{cursor:pointer;border:2px solid transparent;border-radius:3px;min-width:32px;width:18%;max-width:64px}.captcheck_answer_label>input:checked+img{cursor:pointer;border:2px solid #424242;border-radius:3px}.captcheck_error_message{color:red}.captcheck_question_image{display:initial}.captcheck_question_access{display:none}.captcheck_alt_question_button{float:right;font-size:80%;cursor:pointer;color:inherit;text-decoration:inherit;border:0}.captcheck_answer_images{display:initial}.captcheck_answer_access{display:none}";
document.body.appendChild(styles);
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}