网站颜色变灰色

static/grayscale.js

@@ -308,7 +308,37 @@ var grayscale = (function(){
     return init;
     return init;
 
 
 })();
 })();
+function IEVersion() {
+  var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
+  var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1; //判断是否IE<11浏览器
+  var isEdge = userAgent.indexOf("Edge") > -1 && !isIE; //判断是否IE的Edge浏览器
+  var isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf("rv:11.0") > -1;
+  if(isIE) {
+    var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
+    reIE.test(userAgent);
+    var fIEVersion = parseFloat(RegExp["$1"]);
+    if(fIEVersion == 7) {
+      return 7;
+    } else if(fIEVersion == 8) {
+      return 8;
+    } else if(fIEVersion == 9) {
+      return 9;
+    } else if(fIEVersion == 10) {
+      return 10;
+    } else {
+      return 6;//IE版本<=7
+    }
+  } else if(isEdge) {
+    return 'edge';//edge
+  } else if(isIE11) {
+    return 11; //IE11
+  }else{
+    return -1;//不是ie浏览器
+  }
+}
 
 
-window.onload = function () {
-  grayscale(document.body);
+if (IEVersion != -1) {
+  alert("暂时不支持IE浏览器，请更换其他浏览器！");
+  window.close();
 }
 }
+