复习练习,03jquery Css方法一步步升级

jquery Css方法一步步升级

<script src="jquery-1.8.3.js"></script>

  <script type="text/javascript">
        //css 方法 一步步升级
        //1.css 
       /* $(function () {
            $("input").click(function() {
                $(".shang").css("font-size", "22px");
                $(".shang").css("background-color", "red");
                $(".shang").css("border", "#000 5px solid");
                $(".shang").css("opacity", "0.5");
            });


        });
        */

        //2.css
       /* $(function () {
            $("input").click(function () {
                $(".shang").css("font-size", "22px").css("background-color", "red").css("border", "#000 5px solid").css("opacity", "0.5");
            });


        });
        */

        //3.css
        /* $(function () {
            $("input").click(function () {
                var s =
                {
                    "font-size": "22px",
                    "background-color": "red",
                    "border": "#000 5px solid",
                    "opacity": "0.5"
                }
                $(".shang").css(s);
            });
        });
        */
        //4.css
        $(function () {
            $("input").click(function () {
              
                $(".shang").css({
                    "font-size": "22px",
                    "background-color": "red",
                    "border": "#000 5px solid",
                    "opacity": "0.5"
                });
            });
        });
 

//5.css

$(function () {

$("input").click(function ()

{

$(".shang").css({width: function (index, value){ return ((index * 50) + 100) + "px"; },

});

});

});


</script> </head> <body> <input type="button" value="dianji"/> <div >dddds <ul> <li>fasl</li> <li> sssss<span> span hong1</span></li> <li> sssss<span> span hong2</span></li> </ul> </div> </body>