url-rotator/index.html at master · Rossolson/url-rotator · GitHub

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<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Bookmarklet generator for URL rotation</title>
    <style>
        body {
            margin: 2% auto auto;
            max-width: 50em;
            min-width: 35em;
            font-family: sans-serif;
            padding: 0 2em;
        }
        label, fieldset input, output {
            display: block;
            margin: 1em 0;
        }
        fieldset {
            padding-right: 0;
        }
        .stringset {
            max-height: 24em;
            overflow-y: scroll;
            margin: 0;
        }
        form, #instructions {
            display: table-cell;
            float: left;
            width: 45%;
            margin-right: 1em;
            color: #555;
            cursor: default;
        }
        ul.examples {
            display: inline-block;
            border: 1px solid lightgray;
            padding: 1em;
            margin-left: 2em;
        }
        ul.examples li {
            display: block;
            padding: .25em;
            cursor: default;
        }
        ul.examples li a {
            cursor: default;
        }
        label.optional {
            margin-left: 2em;
        }
        label.optional input {
            margin-left: -1.8em
        }

        [hidden=true] {
            display: none;
        }
        output a, output a:link, output a:visited {
            color: #000;
            background-color: #ddd;
            border-radius: 4px;
            padding: 3px 6px;
            margin: 0;
            white-space: nowrap;
            text-decoration: none;
            cursor: grab;
            cursor: -webkit-grab;
        }
        output a:before {
            content: '⋮ ';
            color: #eee;
        }
        output a:hover {
            color: #fff;
            background-color: #999;
            text-decoration: none;
        }

    </style>
</head>
<h1>Bookmarklet generator for URL rotation</h1>
<p><i>Rotate between different versions of a website by changing the URL.</i></p>
<form>
    <label>Bookmark title: <input id="bookmark-title" placeholder="Rotate!"></label>
    <fieldset>
        <legend>Strings</legend>
        <div class="stringset">
        <input class="needle" value="locale=en_US">
        <input class="needle" value="locale=de_DE">
        <input class="needle" value="locale=ru_RU">
        <input class="needle" value="locale=zh_CN">
        <button type="button">+</button>
        </div>
    </fieldset>
    <label class="optional">
        <input type="checkbox" checked id="adddefault">
        Add <code>?[first string]</code> to the end of the URL when none is found as in:<br /> <code>example.com/page/?locale=en_US</code>
    </label>
    <input type="submit" value="Generate bookmarklet">
    <output hidden="true">Drag me or copy me: <a href="#"></a></output>
</form>

<div id="instructions">
    <p>This will generate a bookmarklet that replaces a string in the list with the next string. For example using this:</p>
    <ul class="examples">
        <li><a href="#">www.example.com</a></li>
        <li><a href="#">stage.example.com</a></li>
        <li><a href="#">example.local</a></li>
    </ul>
    <p>…will take you to the exact same page on another domain. Or you can replace a query string name/value pair with the next one:</p>
    <ul class="examples">
        <li><a href="#">locale=en_US</a></li>
        <li><a href="#">locale=en_XA</a></li>
        <li><a href="#">locale=fr_FR</a></li>
    </ul>
    <p>Each time you click the bookmarklet, the next string will be pushed into the URL and the page will be reloaded.</p>
</div>
<script>
function generateBookmarklet(e) {
    e.preventDefault();
    var needles = [];
    var needlesInput = document.querySelectorAll('input.needle');
    for (var i=0, il=needlesInput.length; i<il; i++) {
        var needle = needlesInput[i].value;
        if (needle.length > 0) {
            needles.push('"' + needle + '"');
        }
    }
    needleArray= '[' + needles.join(',') + ']';

    var addDefault = document.querySelectorAll('input#adddefault');
    var addDefaultJs = '';
    if (addDefault[0].checked) { addDefaultJs = 'if(!flag){newLoc=loc.href+"?"+' + needles[0] + ';loc.assign(newLoc);}'; }

    // generate bookmark string
    var bookmarkletJs = 'javascript:(function(){var strs=' + needleArray + ',\
loc=window.location,\
flag=false;\
for(var i=0;i<strs.length;i++){\
  var pos=loc.href.indexOf(strs[i]);\
  if(pos>=0){\
    j=((i+1)%strs.length);\
    newLoc=loc.href.split(strs[i]).join(strs[j]);\
    loc.assign(newLoc);\
    flag=true;\
  }\
}' + addDefaultJs + '\
})();';

    // generate link to copy.
    var output = document.querySelector('output');
    var a = output.querySelector('a');
    a.href = bookmarkletJs;
    var title = document.getElementById('bookmark-title').value;
    if (title.length == 0) {
        title = "Rotate!";
    };
    a.innerHTML = title;
    output.removeAttribute('hidden');
}

function addField(e) {
    var input = document.createElement('input');
    input.className = "needle";
    input.placeholder = "another string";
    e.target.parentNode.insertBefore(input, e.target);
}
document.querySelector('form').addEventListener('submit', generateBookmarklet, false);
document.querySelector('button').addEventListener('click', addField, false);
</script>