jdfm · December 25, 2015 17:59
diff --git a/styled-input-type.html b/styled-input-type.html
 <!doctype html>
 <!--
    Minimal JS, crossbrowser, styled input[type="file"] with simple markup.

    Tested working in IE[>=7], FF[24], O[16], C[30], S[6.0.5]; Should work in
        all browsers that support opening a file browser via a label associated
        to an input[type="file"]. Some adjustments might be necessary for IE[6]
        support.

    Tested using html5 doctype. Further testing is necessary to ensure proper
        behaviour for others.

    Initially I thought no JS was needed, but it seems that you have no way of
        showing feedback when the user actually selects a file. I tried to use
        this selector (with corresponding markup):
        .file-input-view > input[type="file"][value=""] + label;
        to change the aspect of the button somehow, but that didn't work because
        the value in the document remains unchanged.
 -->
 <html>
 <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Styled Input[type="file"]</title>
    <style>
        .file-input-view {
            background:gray;
            color:white;

            /*  IE7: having a relative axis will be useful for when we shift the
                        input left because of the border sizes that get applied
                        to it's text box portion */
            position:relative;

            /*  remove unnecessary spacing */
            margin:0;
            padding:0;

            /*  set the size of the button */
            display:block;
            width:228px;
            height:34px;

            /*  we'll be using the full width and height, anything
                    extra should be hidden */
            overflow:hidden;
        }

        .file-input-view:hover,
        .file-input-view > label:hover {
            background:silver;
            color:black;
        }

        /*  This will not work in IE7. I have no idea how to fix this. */
        .file-input-view:active,
        .file-input-view > label:active {
            background:black;
            color:white;
        }

        .file-input-view > input[type="file"] {
            /*  we're going to be using the div and the label for our visual
                    styling purposes, so make the actual input invisible */
            -moz-opacity:0;
            -o-opacity:0;
            -webkit-opacity:0;
            -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
            filter: alpha(opacity=0);
            opacity:0;

            /*  place the input below the label */
            position:absolute;
            z-index:1;

            /*  make the button look clickable */
            cursor:pointer;

            /*  IE7/8 specific styles */
            /*  IE7: removes the width from the text box.
                IE8: The label was being pushed upwards, by the input,
                       after clicking on it once. Setting width to
                       zero corrects this. */
            width:0\9;

            /*  IE7 specific styles */
            /*  this will size both the text box and the button */
            *border-width:17px 114px;

            /*  place the input above the label */
            *z-index:2;

            /*  border-left + border-right + some little extra bit, which is the
                    spacing between the textbox and the button */
            *left:-233px;
        }

        .file-input-view > label {
            /*  place the label above the input */
            position:absolute;
            z-index:2;

            /*  align label text to the horizontal center */
            text-align:center;

            /*  make the label look clickable */
            cursor:pointer;

            /*  remove any extra unnecessary spacing */
            margin:0;
            padding:0;

            /*  setting the line-height to the same height as the container
                    will vertically align the text to the middle of the
                    container's vertical space */
            line-height:34px;

            /*  use the parent element's width and height */
            width:100%;
            height:100%;

            /*  IE7: the default activated area when clicking the label is the
                        text box, which does not open the file dialog. Place the
                        label under the input. */
            *z-index:1;
        }

        .file-input-view.file-selected {
            background:green;
        }
    </style>
 </head>
 <body>
    <!-- Associated markup -->
    <div class="file-input-view">
        <label for="file_input">Upload File</label>
        <input type="file" id="file_input" name="file_input">
    </div>

    <!-- simple script to change the visual style when a file is selected -->
    <script>
        // get the input
        var fileInput = document.getElementById('file_input');

        // get it's parent
        var fileInputView = fileInput.parentNode;

        // IE7 uses a different event naming scheme, get the appropriate one
        var eventType = 'addEventListener' in fileInput? 'change': 'onchange';

        // IE7 uses a different event attaching mechanism, get the appropriate one
        var attacher = 'addEventListener' in fileInput? 'addEventListener': 'attachEvent';

        // cache the regexp we'll be using later on
        var fileSelectedRE = /(?:^|\s+)file-selected(?:$|\s+)/;

        // create the event
        fileInput[attacher](eventType, function(e){
            // IE places the event object in the window
            e = e || window.event;

            // add or remove the file-selected class to the input view for visual feedback
            if(!fileInput.value){
                fileInputView.className.replace(fileSelectedRE, ' ');
            } else if(!fileInputView.className.match(fileSelectedRE)){
                fileInputView.className += ' file-selected';
            }
        }, false);
    </script>
 </body>
 </html>
	<!doctype html>
	<!--
	Minimal JS, crossbrowser, styled input[type="file"] with simple markup.

	Tested working in IE[>=7], FF[24], O[16], C[30], S[6.0.5]; Should work in
	all browsers that support opening a file browser via a label associated
	to an input[type="file"]. Some adjustments might be necessary for IE[6]
	support.

	Tested using html5 doctype. Further testing is necessary to ensure proper
	behaviour for others.

	Initially I thought no JS was needed, but it seems that you have no way of
	showing feedback when the user actually selects a file. I tried to use
	this selector (with corresponding markup):
	.file-input-view > input[type="file"][value=""] + label;
	to change the aspect of the button somehow, but that didn't work because
	the value in the document remains unchanged.
	-->
	<html>
	<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<title>Styled Input[type="file"]</title>
	<style>
	.file-input-view {
	background:gray;
	color:white;

	/* IE7: having a relative axis will be useful for when we shift the
	input left because of the border sizes that get applied
	to it's text box portion */
	position:relative;

	/* remove unnecessary spacing */
	margin:0;
	padding:0;

	/* set the size of the button */
	display:block;
	width:228px;
	height:34px;

	/* we'll be using the full width and height, anything
	extra should be hidden */
	overflow:hidden;
	}

	.file-input-view:hover,
	.file-input-view > label:hover {
	background:silver;
	color:black;
	}

	/* This will not work in IE7. I have no idea how to fix this. */
	.file-input-view:active,
	.file-input-view > label:active {
	background:black;
	color:white;
	}

	.file-input-view > input[type="file"] {
	/* we're going to be using the div and the label for our visual
	styling purposes, so make the actual input invisible */
	-moz-opacity:0;
	-o-opacity:0;
	-webkit-opacity:0;
	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
	filter: alpha(opacity=0);
	opacity:0;

	/* place the input below the label */
	position:absolute;
	z-index:1;

	/* make the button look clickable */
	cursor:pointer;

	/* IE7/8 specific styles */
	/* IE7: removes the width from the text box.
	IE8: The label was being pushed upwards, by the input,
	after clicking on it once. Setting width to
	zero corrects this. */
	width:0\9;

	/* IE7 specific styles */
	/* this will size both the text box and the button */
	*border-width:17px 114px;

	/* place the input above the label */
	*z-index:2;

	/* border-left + border-right + some little extra bit, which is the
	spacing between the textbox and the button */
	*left:-233px;
	}

	.file-input-view > label {
	/* place the label above the input */
	position:absolute;
	z-index:2;

	/* align label text to the horizontal center */
	text-align:center;

	/* make the label look clickable */
	cursor:pointer;

	/* remove any extra unnecessary spacing */
	margin:0;
	padding:0;

	/* setting the line-height to the same height as the container
	will vertically align the text to the middle of the
	container's vertical space */
	line-height:34px;

	/* use the parent element's width and height */
	width:100%;
	height:100%;

	/* IE7: the default activated area when clicking the label is the
	text box, which does not open the file dialog. Place the
	label under the input. */
	*z-index:1;
	}

	.file-input-view.file-selected {
	background:green;
	}
	</style>
	</head>
	<body>
	<!-- Associated markup -->
	<div class="file-input-view">
	<label for="file_input">Upload File</label>
	<input type="file" id="file_input" name="file_input">
	</div>

	<!-- simple script to change the visual style when a file is selected -->
	<script>
	// get the input
	var fileInput = document.getElementById('file_input');

	// get it's parent
	var fileInputView = fileInput.parentNode;

	// IE7 uses a different event naming scheme, get the appropriate one
	var eventType = 'addEventListener' in fileInput? 'change': 'onchange';

	// IE7 uses a different event attaching mechanism, get the appropriate one
	var attacher = 'addEventListener' in fileInput? 'addEventListener': 'attachEvent';

	// cache the regexp we'll be using later on
	var fileSelectedRE = /(?:^\|\s+)file-selected(?:$\|\s+)/;

	// create the event
	fileInput[attacher](eventType, function(e){
	// IE places the event object in the window
	e = e \|\| window.event;

	// add or remove the file-selected class to the input view for visual feedback
	if(!fileInput.value){
	fileInputView.className.replace(fileSelectedRE, ' ');
	} else if(!fileInputView.className.match(fileSelectedRE)){
	fileInputView.className += ' file-selected';
	}
	}, false);
	</script>
	</body>
	</html>