微信web端后退强制刷新功能的实现代码

<script>
 //生成uuid
 var uuidChars = "01234567ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".split("");
 function uuid() {
 var r;
 var uuid = [];
 uuid[8] = uuid[13] = uuid[18] = uuid[23] = "-";
 uuid[14] = "4";
 for (i = 0; i < 36; i++) {
 if (!uuid[i]) {
 r = 0 | Math.random() * 16;
 uuid[i] = uuidChars[(i == 19) ? (r & 0x3) | 0x8 : r];
 }
 }
 return uuid.join("");
 }
 // 兼容 android
 history.replaceState(null, null, "/currentURL?a="+uuid());
 // 兼容 ios
 $(function () { 
 var isPageHide = false; 
 window.addEventListener('pageshow', function () { 
 if (isPageHide) { 
 window.location.reload(); 
 } 
 }); 
 window.addEventListener('pagehide', function () { 
 isPageHide = true; 
 }); 
 })
</script>