因项目需要，自己网上找了一些代码然后再完善了一些，增加了弹窗出现时不可滑动/滚动，可自定义弹窗的标题、内容、按钮文字等，无需jquery，引入jquery是为了测试，代码如下：
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>js confirm弹出框自定义样式</title>
<style>
html,
body {
margin: 0;
padding: 0;
font-family: "Microsoft YaHei";
}
.wrap-dialog {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
font-size: 16px;
text-align: center;
background-color: rgba(0, 0, 0, .4);
z-index: 999;
}
.dialog {
position: relative;
margin: 10% auto;
width: 300px;
background-color: #FFFFFF;
}
.dialog .dialog-header {
height: 20px;
padding: 10px;
background-color: #22b9ff;
}
.dialog .dialog-body {
height: 30px;
padding: 20px;
}
.dialog .dialog-footer {
padding: 8px;
background-color: #f5f5f5;
}
.dialog-btn {
width: 70px;
padding: 2px;
cursor: pointer;
}
.dialog-hide {
display: none;
}
.dialog-ml50 {
margin-left: 50px;
}
</style>
</head>
<body>
<input type="button" value="删除" class="dialog-btn dialog-ml50" id="dialog-remove">
//组件html部分
<div style="height: 1000px;"></div>
<div class="wrap-dialog dialog-hide" >
<div class="dialog" id="dialog">
<div class="dialog-header">
<span class="dialog-title">信息确认</span>
</div>
<div class="dialog-body">
<span class="dialog-message">你确认删除此条信息？</span>
</div>
<div class="dialog-footer">
<input type="button" class="dialog-btn dialog-btn-cancel" id="dialog-cancel" value="取消" />
<input type="button" class="dialog-btn dialog-btn-confirm" id="dialog-confirm" value="确认" />
</div>
</div>
</div>
</body>
<script src="http://cdn.bootcss.com/jquery/2.2.1/jquery.min.js"></script>
<script>
$(document).ready(function() {
var mo=function(e){e.preventDefault();};
//禁止页面滑动
function stopSlide(){
document.body.style.overflow='hidden'
document.addEventListener("touchmove",mo,{ passive: false })
}
//出现滚动条
function moveStop(){
document.body.style.overflow=''
document.removeEventListener("touchmove",mo,{ passive: false })
}
//自定义部分
window.confirm = function(confirmInfo, yesCallBack, noCallBack) {
let title = confirmInfo.title || '温馨提示'
let message = confirmInfo.message || '确定要进行此操作吗?'
let cancelButtonText = confirmInfo.cancelButtonText || '取消'
let confirmButtonText = confirmInfo.confirmButtonText || '确定'
let choose = function (tag) {
return document.querySelector(tag);
}
choose(".dialog-title").innerHTML = title;
choose(".dialog-message").innerHTML = message;
choose(".dialog-btn-cancel").value = cancelButtonText;
choose(".dialog-btn-confirm").value = confirmButtonText;
// 显示遮罩和对话框
choose(".wrap-dialog").className = "wrap-dialog";
// 确定按钮
choose("#dialog").onclick = function (e) {
if (e.target.className == "dialog-btn dialog-btn-cancel") {
choose(".wrap-dialog").className = "wrap-dialog dialog-hide";
noCallBack();
} else if (e.target.className == "dialog-btn dialog-btn-confirm") {
choose(".wrap-dialog").className = "wrap-dialog dialog-hide";
yesCallBack();
}
}
//显示弹窗后禁止页面滑动
stopSlide()
}
$('#dialog-remove').click(function() {
function btnOk() {
alert('点击了我要登录');
moveStop()
}
function btnCancel() {
alert('点击了以后再说');
moveStop()
}
confirm({
title:'您还未登录',
message: '是否马上去登录？',
cancelButtonText: '以后再说',
confirmButtonText: '我要登录'
}, btnOk, btnCancel);
});
});
</script>
</html>