javascriptAPIs/toStaticHTML.html at master · chandub/javascriptAPIs · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>A simple demo of toStaticHTML</title>
    <style>
        input {
            width:400px;
        }
        #output {
            margin-top:20px;
        }
    </style>
</head>
<body>
    Enter text:
    <input type="text" value="<script>alert('malicious');</script>I'm normal text" id="inp"/>
    <button type="submit" id="btn">Submit</button>
    <div id="output"></div>

    <script type="text/javascript">
        (function () {

            function sanitizeInput() {
                if (!window.toStaticHTML) {
                    alert("Your browser do not support 'toStaticHTML' function");
                    return;
                }

                var inputVal = document.querySelector("#inp").value

                /* Method: window.toStaticHTML
                 * Supported in IE8+ browsers
                 * Useful in HTML5 windows8 application
                 */
                document.getElementById("output").innerHTML = "Sanitized output: "+window.toStaticHTML(inputVal);
            }

            document.getElementById("btn").addEventListener("click",sanitizeInput, false);
        })();
    </script>
</body>
</html>