js实现滑动拼图验证码
转载地址：https://www.cnblogs.com/huaji666/p/8257710.html
js实现滑动拼图验证码，我这个样式是仿那些大网站做了， 学习用的,只用到前端。 小的个人网站感觉还可以用，大一点的别人用机器一下就破解了。
下面看图示:
样子大概是这样的。
源码在这
百度网盘: 链接: https://pan.baidu.com/s/1htjxYBE 密码: m5aw
3.9MB 是因为里面绝大部分是图片
使用示例 代码里面都有
js源码
(function (window, document) {
var SliderBar = function (targetDom, options) {
// 判断是用函数创建的还是用new创建的。这样我们就可以通过MaskShare("dom") 或 new MaskShare("dom")来使用这个插件了
if (!(this instanceof SliderBar)) return new SliderBar(targetDom, options);
// 参数
this.options = this.extend({
dataList: []
}, options);
// 获取dom
this.targetDom = document.getElementById(targetDom);
var dataList = this.options.dataList;
if (dataList.length > 0) {
var html = "" +
"" +
"" +
"![]()
" +
"" +
"" +
"" +
"";
this.targetDom.innerHTML = html;
this.slideBtn = document.getElementById("slideBtn"); // 拖拽按钮
this.refreshBtn = document.getElementById("refreshBtn"); // 换图按钮
this.slideHint = document.getElementById("slideHint"); // 提示名称
this.slideImg = document.getElementById("slideImg"); // 图片
this.cutBlock = document.getElementById("cutBlock"); // 裁剪区域
this.slideBlock = document.getElementById("slideBlock"); // 裁剪的图片
this.slideIcon = document.getElementById("slideIcon"); // 正确、失败的图标
this.slideType = document.getElementById("slideType"); // 正确、失败
this.slideContent = document.getElementById("slideContent"); // 正确、失败的正文
this.slideHintInfo = document.getElementById("slideHintInfo"); // 弹出
this.resultX = 0;
this.startX = 0;
this.timer = 0;
this.startTamp = 0;
this.endTamp = 0;
this.x = 0;
this.imgWidth = 0;
this.imgHeight = 0;
this.imgList = [];
this.isSuccess = true;
for (var i = 1; i < 10; i++) {
this.imgList.push(i + ".jpg");
}
}
this.init();
}
SliderBar.prototype = {
init: function () {
this.event();
},
extend: function (obj, obj2) {
for (var k in obj2) {
obj[k] = obj2[k];
}
return obj;
},
event: function () {
var _this = this;
_this.reToNewImg();
_this.slideBtn.onmousedown = function(event){
_this.mousedown(_this, event);
}
_this.refreshBtn.onclick = function(){
_this.refreshBtnClick(_this);
}
},
refreshBtnClick: function(_this){
_this.isSuccess = true;
_this.slideBlock.style.cssText = "";
_this.cutBlock.style.cssText = "";
_this.reToNewImg();
},
reToNewImg: function () {
var _this = this;
var index = Math.round(Math.random() * 8); // 该方法有等于0 的情况
var imgSrc = "./images/" + _this.imgList[index] + "";
_this.slideImg.setAttribute("src", imgSrc);
_this.slideBlock.style.backgroundImage = "url("+ imgSrc +")";
_this.slideImg.onload = function (e) {
e.stopPropagation();
_this.imgWidth = _this.slideImg.offsetWidth; // 图片宽
_this.imgHeight = _this.slideImg.offsetHeight; // 图片高
}
},
cutImg: function () {
var _this = this;
_this.cutBlock.style.display = "block";
var cutWidth = _this.cutBlock.offsetWidth; // 裁剪区域宽
var cutHeight = _this.cutBlock.offsetHeight; // 裁剪区域高
// left
_this.resultX = Math.floor(Math.random() * (_this.imgWidth - cutWidth * 2 - 4) + cutWidth);
// top
var cutTop = Math.floor(Math.random() * (_this.imgHeight - cutHeight * 2) + cutHeight);
// 设置样式
_this.cutBlock.style.cssText = "top:" + cutTop + "px;" + "left:" + _this.resultX + "px; display: block;";
_this.slideBlock.style.top = cutTop + "px";
_this.slideBlock.style.backgroundPosition = "-" + _this.resultX + "px -" + cutTop + "px";
_this.slideBlock.style.opacity = "1";
},
mousedown: function (_this, e) {
e.preventDefault();
_this.startX = e.clientX;
_this.startTamp = (new Date()).valueOf();
var target = e.target;
target.style.backgroundPosition = "0 -216px";
_this.slideHint.style.opacity = "0";
if(_this.isSuccess){
_this.cutImg();
}
document.addEventListener('mousemove', mousemove);
document.addEventListener('mouseup', mouseup);
// 拖拽
function mousemove(event) {
_this.x = event.clientX - _this.startX;
if (_this.x < 0) {
_this.slideBtn.style.left = "0px";
_this.slideBlock.style.left = "2px";
} else if (_this.x >= 0 && _this.x <= 217) {
_this.slideBtn.style.left = _this.x + "px";
_this.slideBlock.style.left = _this.x + "px";
} else {
_this.slideBtn.style.left = "217px";
_this.slideBlock.style.left = "217px";
}
_this.slideBtn.style.transition = "none";
_this.slideBlock.style.transition = "none";
};
// 鼠标放开
function mouseup() {
document.removeEventListener('mousemove', mousemove);
document.removeEventListener('mouseup', mouseup);
var left = _this.slideBlock.style.left;
left = parseInt(left.substring(0, left.length-2));
if(_this.resultX > (left - 2) && _this.resultX < (left + 2)){
_this.isSuccess = true;
_this.endTamp = (new Date()).valueOf();
_this.timer = ((_this.endTamp - _this.startTamp) / 1000).toFixed(1);
// 裁剪图片(拼图的一块)
_this.slideBlock.style.opacity = "0";
_this.slideBlock.style.transition = "opacity 0.6s";
// 裁剪的区域(黑黑的那一块)
_this.cutBlock.style.opacity = "0";
_this.cutBlock.style.transition = "opacity 0.6s";
// 正确弹出的图标
_this.slideIcon.style.backgroundPosition = "0 -1207px";
_this.slideType.className = "slide-text-type greenColor";
_this.slideType.innerHTML = "验证通过:";
_this.slideContent.innerHTML = "用时" + _this.timer + "s";
setTimeout(function(){
_this.cutBlock.style.display = "none";
_this.slideBlock.style.left = "2px";
_this.reToNewImg();
}, 600);
_this.options.success&&_this.options.success();
}else{
_this.isSuccess = false;
// 设置样式
// 裁剪图片(拼图的一块)
_this.slideBlock.style.left = "2px";
_this.slideBlock.style.transition = "left 0.6s";
// 错误弹出的图标
_this.slideIcon.style.backgroundPosition = "0 -1229px";
_this.slideType.className = "slide-text-type redColor";
_this.slideType.innerHTML = "验证失败:";
_this.slideContent.innerHTML = "拖动滑块将悬浮图像正确拼合";
_this.options.fail&&_this.options.fail();
}
// 设置样式
_this.slideHintInfo.style.height = "22px";
setTimeout(function(){
_this.slideHintInfo.style.height = "0px";
}, 1300);
_this.slideBtn.style.backgroundPosition = "0 -84px";
_this.slideBtn.style.left = "0";
_this.slideBtn.style.transition = "left 0.6s";
_this.slideHint.style.opacity = "1";
}
}
}
window.SliderBar = SliderBar;
}(window, document));
css就不放了
别人的有像拼图一样的凹凸， 那个我实在不知道怎么弄就算了。