bug: fix days diff

package-lock.json

@@ -3944,6 +3944,11 @@
       "integrity": "sha1-6vQ5/U1ISK105cx9vvIAZyueNFs=",
       "dev": true
     },
+    "dayjs": {
+      "version": "1.7.8",
+      "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.7.8.tgz",
+      "integrity": "sha512-Gp4Y5KWeSri0QOWGzHQz7VrKDkfEpS92dCLK7P8hYowRFbaym1vj3d6CoHio3apSS4KSi/qb5Edemv26IN5Hfg=="
+    },
     "de-indent": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/de-indent/-/de-indent-1.0.2.tgz",
@@ -12175,7 +12180,8 @@
     "prettier": {
       "version": "1.15.3",
       "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.15.3.tgz",
-      "integrity": "sha512-gAU9AGAPMaKb3NNSUUuhhFAS7SCO4ALTN4nRIn6PJ075Qd28Yn2Ig2ahEJWdJwJmlEBTUfC7mMUSFy8MwsOCfg=="
+      "integrity": "sha512-gAU9AGAPMaKb3NNSUUuhhFAS7SCO4ALTN4nRIn6PJ075Qd28Yn2Ig2ahEJWdJwJmlEBTUfC7mMUSFy8MwsOCfg==",
+      "dev": true
     },
     "pretty": {
       "version": "2.0.0",

package.json

@@ -18,6 +18,7 @@
     "@antv/g2": "^3.2.7",
     "axios": "^0.18.0",
     "clipboard": "^2.0.1",
+    "dayjs": "^1.7.8",
     "element-ui": "^2.4.5",
     "g2-vue": "^1.0.1",
     "js-base64": "^2.4.8",

src/pages/system/library/borrow/bookreturn.vue

@@ -86,6 +86,7 @@
 </template>
 
 <script>
+import dayjs from 'dayjs'
 import { createNamespacedHelpers, mapState } from 'vuex'
 
 const { mapState: mapLibSate, mapActions } = createNamespacedHelpers('library')
@@ -196,9 +197,8 @@ export default {
     },
 
     diffToday(dt) {
-      const days =
-        (new window.Date().getTime() - (new Date(dt)).getTime()) / (1000 * 60 * 60 * 24)
-      return days <= 0 ? 0 : days
+      const days = dayjs(new Date()).startOf('day').diff(dayjs(dt).startOf('day'), 'day')
+      return days < 0 ? 0 : days
     },
     cancel() {
       this.customerInfo = ''