參考文章:http://www.cnblogs.com/lostyu/p/3528785.html
寫一下我的操作步驟:
1.下載【grayscale.js】
2.在html 的head裏,加入
<script src="js/jquery_1.8.1.js"></script>
<script src="js/grayscale.js"></script>
<script>
window.onload = function(){
$("body").css({
"grayscale(1)": "grayscale(1)",
"-webkit-filter": "grayscale(1)"
});
var el = document.getElementById( 'body' );
grayscale( el );
};
</script>
完成