jquery点击图标来回切换的几种方法（如开关按钮）

1.$(".img").click(function(){        if(this.src.search("../static/img/off.png")!=-1){            this.src="../static/img/on.png";        }else{            this.src="../static/img/off.png"        }    })2.$(".img").click(function(){ $(this).attr('src',$(this).attr('src')=='../static/img/on. png'?'../static/img/off.png':'../static/img/on.png');})3.$(".img").toggle(function(){    $(this).attr("src","../static/img/on.png");    },function(){    $(this).attr("src","../static/img/off.png");    }).attr("src","../static/img/off.png");