first commit

历届学生/front-end-team-11/项目开发/学生项目/贡婉宝/水管鸟/js/clas.js

@@ -0,0 +1,33 @@
+class incommon{
+    $(name){
+        return document.querySelector(name);
+    }
+    _(name){
+        return document.querySelectorAll(name);
+    }
+
+    customMethods(){
+        Element.prototype.add=function(name){
+            this.classList.add(name)
+        }
+        Element.prototype.remove=function(name){
+            this.classList.remove(name)
+        }
+        Element.prototype.none = function() {
+            this.style.display = "none"
+        }
+        Element.prototype.show = function() {
+            this.style.display = "block"
+        }
+    }
+    getRandom(min, max) {
+        const floatRandom = Math.random()
+        const difference = max - min
+        const random = Math.round(difference * floatRandom)
+        const randomWithinRange = random + min
+        return randomWithinRange
+      }
+}
+
+let { $, _ ,customMethods,getRandom} = new incommon()
+customMethods()