背景图像渐变不与ie9一起使用

Question

Seems that the below code doesn't work with ie9. Is there a workaround? Thanks

.orangeback {
/* IE10 Consumer Preview */ 
background-image: -ms-linear-gradient(top, #FF6900 0%, #FF8214 100%);

/* Mozilla Firefox */ 
background-image: -moz-linear-gradient(top, #FF6900 0%, #FF8214 100%);

/* Opera */ 
background-image: -o-linear-gradient(top, #FF6900 0%, #FF8214 100%);

/* Webkit (Safari/Chrome 10) */ 
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #FF6900), color-stop(1, #FF8214));

/* Webkit (Chrome 11+) */ 
background-image: -webkit-linear-gradient(top, #FF6900 0%, #FF8214 100%);

/* W3C Markup, IE10 Release Preview */ 
background-image: linear-gradient(to bottom, #FF6900 0%, #FF8214 100%);
}

Answer 1

Try

filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#ffffff', endColorstr='#000000');/*For IE7-8-9*/

Let me know if it works.

Answer 2

This is pretty close:

filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ff6900', endColorstr='#ff8214',GradientType=0 );

This works in IE6+.

Or, for JUST IE9, you can replace it with an SVG by using the following styles, if the filter option doesn't float your boat:

Add to .orangeback :

background: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiA/Pgo8c3ZnIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgdmlld0JveD0iMCAwIDEgMSIgcHJlc2VydmVBc3BlY3RSYXRpbz0ibm9uZSI+CiAgPGxpbmVhckdyYWRpZW50IGlkPSJncmFkLXVjZ2ctZ2VuZXJhdGVkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjAlIiB5MT0iMCUiIHgyPSIwJSIgeTI9IjEwMCUiPgogICAgPHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iI2ZmNjkwMCIgc3RvcC1vcGFjaXR5PSIwIi8+CiAgICA8c3RvcCBvZmZzZXQ9IjEwMCUiIHN0b3AtY29sb3I9IiNmZjgyMTQiIHN0b3Atb3BhY2l0eT0iMSIvPgogIDwvbGluZWFyR3JhZGllbnQ+CiAgPHJlY3QgeD0iMCIgeT0iMCIgd2lkdGg9IjEiIGhlaWdodD0iMSIgZmlsbD0idXJsKCNncmFkLXVjZ2ctZ2VuZXJhdGVkKSIgLz4KPC9zdmc+);

Also add .ie9-gradient class to these elements, and add the following before the closing head tag:

<!--[if gte IE 9]>
  <style type="text/css">
    .ie9-gradient {
       filter: none;
    }
  </style>
<![endif]-->

To use the SVG polyfill for CSS3 gradients in IE9 you need to disable filter, so this code retains the filter gradient fallback for IE6-8 and uses SVG for IE9.

In your case, there is not really a need to use the SVG polyfill for IE9 because you are using a normal 2 color linear gradient. If you had a more complex gradient the second solution would probably be preferable, but for your purposes just using the filter solution should work fine.

Use this (or a CSS preprocessor) and never worry about CSS3 gradients again: Colorzilla Gradient Generator