初始化项目

src/cache.js

@@ -0,0 +1,32 @@
+import Vue from 'vue'
+import store from './store';
+Vue.mixin({
+  beforeRouteLeave: function (to, from, next) {
+    if (this.$route.meta.keepAlive === true) {
+      const result = this.$route.meta.keepAlive === true && store.state.tags.tagList.some(ele => {
+        return ele.value === this.$route.fullPath;
+      });
+      if (this.$vnode && !result) {
+        if (this.$vnode.parent && this.$vnode.parent.componentInstance && this.$vnode.parent.componentInstance.cache) {
+          if (this.$vnode.componentOptions) {
+            let key = this.$vnode.key == null
+              ? this.$vnode.componentOptions.Ctor.cid + (this.$vnode.componentOptions.tag ? `::${this.$vnode.componentOptions.tag}` : '')
+              : this.$vnode.key;
+            let cache = this.$vnode.parent.componentInstance.cache;
+            let keys = this.$vnode.parent.componentInstance.keys;
+            if (cache[key]) {
+              if (keys.length) {
+                let index = keys.indexOf(key);
+                if (index > -1) {
+                  keys.splice(index, 1);
+                }
+              }
+              delete cache[key];
+            }
+          }
+        }
+      }
+    }
+    next();
+  },
+});