Html/WebStorage.html at master · changqing18/Html · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Web Storage</title>
    <style type="text/css">
        form ol{
            list-style: none; margin:0; padding:0;
        }
        form li{
            margin:0; padding:0;
        }
        form li label{display:block;}
    </style>

</head>
<body>
<div id="container">
    <p><strong>Preferences</strong></p>
    <form id="preferences" action="save_prefs" method="post" accept-charset="utf-8">
        <fieldset id="colors" class="">
            <legend>Colors</legend>
            <ol>
                <li>
                    <label for="background_color">Background color</label>
                    <input class="color" type="color" name="background_color" value="" id="background_color">
                </li>
                <li>
                    <label for="text_color">Text color</label>
                    <input class="color" type="color" name="text_color" value="" id="text_color">
                </li>
                <li>
                    <label for="text_size">Text size</label>
                    <select name="text_size" id="text_size">
                        <option value="16">16px</option>
                        <option value="20">20px</option>
                        <option value="24">24px</option>
                        <option value="32">32px</option>
                    </select>
                </li>
            </ol>
        </fieldset>
        <input type="submit" value="Save changes">
    </form>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>

    var save_setting=function(){
        localStorage.setItem("background_color", $("#background_color").val());
        localStorage.setItem("text_color", $("#text_color").val());
        localStorage.setItem("text_size", $("#text_size").val());
        apply_preferences_to_page();
    }
    var load_settings=function(){
        var bgcolor=localStorage.getItem("background_color");
        var text_color=localStorage.getItem("text_color");
        var text_size=localStorage.getItem("text_size");
        apply_preferences_to_page();
    }
    var apply_preferences_to_page=function () {
        $("body").css("backgroundColor", $("#background_color").val());
        $("body").css("color", $("#text_color").val());
        $("body").css("font_size", $("#text_size").val()+"px");
    }
    load_settings();
    $('form#preferences').submit(function (event) {
        event.preventDefault();
        save_setting();
    })
</script>
</body>
</html>