1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <meta http-equiv="X-UA-Compatible" content="IE=edge"> 6 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 7 <title>checkout</title> 8 <style> 9 .stream-discount { 10 word-spacing: 0; 11 letter-spacing: 0; 12 width: 100%; 13 height: 100%; 14 position: fixed; 15 top: 0; 16 left: 0; 17 z-index: 1000000001; 18 background-color: rgba(0,0,0,0.75); 19 } 20 .main{ 21 position: relative; 22 width: 70vw; 23 top: 50%; 24 left: 50%; 25 transform: translate(-50%,-50%); 26 } 27 .main .img{ 28 width: 100%; 29 } 30 .main .close-btn{ 31 position: absolute; 32 right: 0; 33 top: 0; 34 width: 60px; 35 height: 60px; 36 text-align: center; 37 line-height: 60px; 38 color: #fff; 39 font-size: 30px; 40 font-weight: bold; 41 } 42 </style> 43 </head> 44 <body> 45 <h1>我是checkout</h1> 46 <form action="./checkout.html" id="form"> 47 <input type="text" id="name" name="name" placeholder="姓名"> 48 <button type="submit"> 提交 </button> 49 </form> 50 <script> 51 s = function() { 52 window.history.pushState(Object.assign(window.history.state || {}, { 53 key: "his-push-01" 54 }), "", "#1") 55 } 56 m = function() { 57 return null !== navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone|HUAWEI)/i) ? "MOBILE" : "PC" 58 } 59 T = function() { 60 var e = document.createElement("div"); 61 if (e.setAttribute("class", "stream-discount"), 62 e.innerHTML = `<div class="main"> 63 <div class="close-btn">×</div> 64 <img src="https://imgs.prettysan.com/uploads/public/62f/b71/246/62fb712460125692912600.jpg?x-oss-process=image%2Fformat%2Cwebp" alt="" style="width:100%;height: calc(1.07 * 70vw);"> 65 </div> 66 `, 67 !document.querySelector(".stream-discount")) { 68 document.body.appendChild(e), 69 document.body.classList.add("stream-modal-show"), 70 sessionStorage.setItem("stream-checkout-discount", "stream-checkout-discount"); 71 72 document.querySelector(".close-btn").addEventListener("click", (function() { 73 var t, e = document.querySelector(".close-btn").classList.contains("step-2") ? 2 : 1; 74 document.querySelector(".stream-discount .main").style.cssText = "top: -100%; opacity: 0;", 75 setTimeout((function() { 76 document.querySelector(".stream-discount").remove(), 77 t && t() 78 } 79 ), 250), 80 document.body.classList.remove("stream-modal-show") 81 } 82 )) 83 } 84 } 85 M = function() { 86 var t = sessionStorage.getItem("stream-checkout-discount"); 87 if (t) 88 return !1; 89 if ("PC" === m()) { 90 document.documentElement.addEventListener("mouseleave", (function t(e) { 91 e.clientY <= 20 && (T(), 92 document.documentElement.removeEventListener("mouseleave", t)) 93 } 94 )) 95 } else 96 s(), 97 window.streamIntercept = function() { 98 T(), 99 window.removeEventListener("popstate", window.streamIntercept) 100 } 101 , 102 window.addEventListener("popstate", window.streamIntercept) 103 104 }; 105 106 var C = function(t, e, n) { 107 if ("FBIOS" == (navigator.userAgent.indexOf("FB") > -1 && navigator.userAgent.indexOf("iOS") > -1 ? "FBIOS" : "ORTHER")) 108 !function(t, e, n) { 109 var o, r, i, a, c, s; 110 t && e && (window.scrollTo(0, 5), 111 document.addEventListener("touchstart", (function(t) { 112 o = t.touches[0].clientX, 113 r = t.touches[0].clientY 114 } 115 )), 116 document.addEventListener("touchend", (function(t) { 117 var e = document.body.scrollTop || document.documentElement.scrollTop; 118 i = t.changedTouches[0].clientX, 119 a = t.changedTouches[0].clientY, 120 c = i - o, 121 (s = a - r) > 14 && Math.abs(s) > Math.abs(c) && e <= 0 && (E(n) 122 )} 123 ))) 124 }(t, e, n); 125 else { 126 var o = 0; 127 t && e && (s(), 128 window.streamIntercept = function() { 129 1 === ++o ? (E(n), 130 s()) : 2 === o ? O(n) : (window.removeEventListener("popstate", window.streamIntercept), 131 history.go(-1)) 132 } 133 , 134 window.addEventListener("popstate", window.streamIntercept)) 135 } 136 } 137 138 var o = { 139 action_log: 2, 140 discount_value: 0, 141 ga: "", 142 intercept: 2, 143 intercept_log: 2 144 } 145 var t = 1 === o.intercept_log, 146 e = 1 === o.intercept, 147 n = Math.abs(o.discount_value); 148 C(t, e, n) 149 M(); 150 </script> 151 </body> 152 </html>
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原文地址：http://www.cnblogs.com/chengjunL/p/16914931.html
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