图片滑动验证码，逻辑是根据鼠标滑动轨迹，坐标位置，计算拖动速度等等来判断是否人为操作，当然下面的代码只是实现前端部分，只记录了拖动的坐标。
先上代码吧，做个备份记录
jquery.lgymove.js
/** * created by lgy on 2017/10/21. * 图片验证码 */ (function ($) { $.fn.imgcode = function (options) { //初始化参数 var defaults = { callback: //回调函数 }; var opts = $.extend(defaults, options); return this.each(function () { var $this = $(this);//获取当前对象 var html = '<p class="code-k-p">' + '<p class="code_bg"></p>' + '<p class="code-con">' + '<p class="code-img">' + '<p class="code-img-con">' + '<p class="code-mask"><img src="../img/front(1).png"></p>' + '<img src="../img/back(1).png"></p>' + '<p class="code-push"><i class="icon-login-bg icon-w-25 icon-push">刷新</i><span class="code-tip"></span></p>' + '</p>' + '<p class="code-btn">' + '<p class="code-btn-img code-btn-m"></p>' + '<span>按住滑块，拖动完成上方拼图</span>' + '</p></p></p>'; $this.html(html); //定义拖动参数 var $pmove = $(this).find(.code-btn-img); //拖动按钮 var $pwrap = $(this).find(.code-btn);//鼠标可拖拽区域 var mx = 0, my = 0;//定义鼠标x轴y轴 var dx = 0, dy = 0;//定义滑动区域左、上位置 var isdown = false;//mousedown标记 if(document.attachevent) {//ie的事件监听，拖拽p时禁止选中内容，firefox与chrome已在css中设置过-moz-user-select: none; -webkit-user-select: none; $pmove[0].attachevent('onselectstart', function() { return false; }); } //按钮拖动事件 $pmove.on({ mousedown: function (e) { //清除提示信息 $this.find(.code-tip).html(); var event = e || window.event; mx = event.pagex; dx = $pwrap.offset().left; dy = $pwrap.offset().top; isdown = true;//鼠标拖拽启 $(this).addclass(active); //修改按钮阴影 $pmove.css({box-shadow:0 0 8px #666}); } }); //鼠标点击松手事件 $(document).mouseup(function (e) { var lastx = $this.find(.code-mask).offset().left - dx - 1; isdown = false;//鼠标拖拽启 $pmove.removeclass(active); //还原按钮阴影 $pmove.css({box-shadow:0 0 3px #ccc}); checkcode(lastx); }); //滑动事件 $pwrap.mousemove(function (event) { var event = event || window.event; var x = event.pagex;//鼠标滑动时的x轴 if (isdown) { if(x>(dx+30) && x<dx+$(this).width()-20){ $pmove.css({"left": (x - dx - 20) + "px"});//p动态位置赋值 $this.find(".code-mask").css({"left": (x - dx-30) + "px"}); } } }); //验证数据 function checkcode(code){ var iscur=false; //模拟ajax settimeout(function(){ if(iscur){ checkcoderesult(1,"验证通过"); $this.find(".code-k-p").hide(); opts.callback({code:1000,msg:"验证通过",msgcode:"23dfdf123"}); }else{ $pmove.addclass("error"); checkcoderesult(0,"验证不通过"); opts.callback({code:1001,msg:"验证不通过"}); settimeout(function() { $pmove.removeclass("error"); $this.find(".code-mask").animate({"left":"0px"},200); $pmove.animate({"left": "10px"},200); },400); } },500) } //验证结果 function checkcoderesult(i,txt){ if(i==0){ $this.find(".code-tip").addclass("code-tip-red"); }else{ $this.find(".code-tip").addclass("code-tip-green"); } $this.find(".code-tip").html(txt); } }) } })(jquery);
css部分：
.code_bg{ position: fixed; top:0; left: 0; right:0; bottom:0; background-color: rgba(0,0,0,.5); z-index: 99; } .icon-login-bg{ background-image: url(../img/icon/loginicon.png); background-repeat: no-repeat; } .code-con{ position: absolute; top:100px; width: 320px; left: 50%; margin-left: -160px; background-color: #fff; z-index: 100; -moz-user-select: none; -webkit-user-select: none; } .code-img{ margin: 5px 5px; padding: 5px 5px; background-color: #f5f6f7; } .code-img img{ display: block; } .icon-w-25{ display: inline-block; width: 25px; height: 25px; text-indent: -9999px; } .icon-push{ cursor: pointer; background-position: -149px -95px; } .code-push{ height: 25px; } .code-btn{ position: relative; height: 30px; text-align: center; color: #999; margin: 10px 10px; box-sizing: border-box; background-color: #f5f6f7; border-radius: 15px; border: 1px solid #e1e1e1; } .code-btn-m{ position: absolute; width: 40px; height: 40px; border-radius: 50%; background-color: #f5f6f7; border: 1px solid #e1e1e1; z-index: 5; top:-8px; left: 10px; box-shadow: 0 0 3px #ccc; cursor: pointer; background-position: -63px 10px; } .code-btn-img{ background-image:url(../img/icon/codejt.png); background-repeat: no-repeat; } .code-btn-img.active{ background-position: -134px 10px; } .code-btn-img.error{ background-position: 8px 10px; } .code-img-con{ position: relative; } .code-mask{ position: absolute; top:0; left: 0; z-index: 10; } .code-tip{ padding-left: 10px; font-size: 12px; color: #999; } .code-tip-red{ color: red; } .code-tip-green{ color: green; }
html部分：
<p id="imgscode"></p> <script> $(#imgscode).imgcode(); </script>
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以上就是图片滑动验证码怎样实现的详细内容。