fix: 解决首次加载时白屏的问题 (#10347)

ant-design · Dec 28, 2022 · 78c9034 · 78c9034
1 parent bd93eb0
commit 78c9034
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diff --git a/config/config.ts b/config/config.ts
@@ -119,6 +119,14 @@ export default defineConfig({
    * @doc https://umijs.org/docs/max/access
    */
   access: {},
+  /**
+   * @name <head> 中额外的 script
+   * @description 配置 <head> 中额外的 script
+   */
+  headScripts: [
+    // 解决首次加载时白屏的问题
+    { src: '/scripts/loading.js', async: true },
+  ],
   //================ pro 插件配置 =================
   presets: ['umi-presets-pro'],
   /**

diff --git a/public/scripts/loading.js b/public/scripts/loading.js
@@ -0,0 +1,202 @@
+/**
+ * loading 占位
+ * 解决首次加载时白屏的问题
+ */
+ (function () {
+  const _root = document.querySelector('#root');
+  if (_root && _root.innerHTML === '') {
+    _root.innerHTML = `
+      <style>
+        html,
+        body,
+        #root {
+          height: 100%;
+          margin: 0;
+          padding: 0;
+        }
+        #root {
+          background-repeat: no-repeat;
+          background-size: 100% auto;
+        }
+
+        .loading-title {
+          font-size: 1.1rem;
+        }
+
+        .loading-sub-title {
+          margin-top: 20px;
+          font-size: 1rem;
+          color: #888;
+        }
+
+        .page-loading-warp {
+          display: flex;
+          align-items: center;
+          justify-content: center;
+          padding: 26px;
+        }
+        .ant-spin {
+          position: absolute;
+          display: none;
+          -webkit-box-sizing: border-box;
+          box-sizing: border-box;
+          margin: 0;
+          padding: 0;
+          color: rgba(0, 0, 0, 0.65);
+          color: #1890ff;
+          font-size: 14px;
+          font-variant: tabular-nums;
+          line-height: 1.5;
+          text-align: center;
+          list-style: none;
+          opacity: 0;
+          -webkit-transition: -webkit-transform 0.3s
+            cubic-bezier(0.78, 0.14, 0.15, 0.86);
+          transition: -webkit-transform 0.3s
+            cubic-bezier(0.78, 0.14, 0.15, 0.86);
+          transition: transform 0.3s cubic-bezier(0.78, 0.14, 0.15, 0.86);
+          transition: transform 0.3s cubic-bezier(0.78, 0.14, 0.15, 0.86),
+            -webkit-transform 0.3s cubic-bezier(0.78, 0.14, 0.15, 0.86);
+          -webkit-font-feature-settings: "tnum";
+          font-feature-settings: "tnum";
+        }
+
+        .ant-spin-spinning {
+          position: static;
+          display: inline-block;
+          opacity: 1;
+        }
+
+        .ant-spin-dot {
+          position: relative;
+          display: inline-block;
+          width: 20px;
+          height: 20px;
+          font-size: 20px;
+        }
+
+        .ant-spin-dot-item {
+          position: absolute;
+          display: block;
+          width: 9px;
+          height: 9px;
+          background-color: #1890ff;
+          border-radius: 100%;
+          -webkit-transform: scale(0.75);
+          -ms-transform: scale(0.75);
+          transform: scale(0.75);
+          -webkit-transform-origin: 50% 50%;
+          -ms-transform-origin: 50% 50%;
+          transform-origin: 50% 50%;
+          opacity: 0.3;
+          -webkit-animation: antspinmove 1s infinite linear alternate;
+          animation: antSpinMove 1s infinite linear alternate;
+        }
+
+        .ant-spin-dot-item:nth-child(1) {
+          top: 0;
+          left: 0;
+        }
+
+        .ant-spin-dot-item:nth-child(2) {
+          top: 0;
+          right: 0;
+          -webkit-animation-delay: 0.4s;
+          animation-delay: 0.4s;
+        }
+
+        .ant-spin-dot-item:nth-child(3) {
+          right: 0;
+          bottom: 0;
+          -webkit-animation-delay: 0.8s;
+          animation-delay: 0.8s;
+        }
+
+        .ant-spin-dot-item:nth-child(4) {
+          bottom: 0;
+          left: 0;
+          -webkit-animation-delay: 1.2s;
+          animation-delay: 1.2s;
+        }
+
+        .ant-spin-dot-spin {
+          -webkit-transform: rotate(45deg);
+          -ms-transform: rotate(45deg);
+          transform: rotate(45deg);
+          -webkit-animation: antrotate 1.2s infinite linear;
+          animation: antRotate 1.2s infinite linear;
+        }
+
+        .ant-spin-lg .ant-spin-dot {
+          width: 32px;
+          height: 32px;
+          font-size: 32px;
+        }
+
+        .ant-spin-lg .ant-spin-dot i {
+          width: 14px;
+          height: 14px;
+        }
+
+        @media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
+          .ant-spin-blur {
+            background: #fff;
+            opacity: 0.5;
+          }
+        }
+
+        @-webkit-keyframes antSpinMove {
+          to {
+            opacity: 1;
+          }
+        }
+
+        @keyframes antSpinMove {
+          to {
+            opacity: 1;
+          }
+        }
+
+        @-webkit-keyframes antRotate {
+          to {
+            -webkit-transform: rotate(405deg);
+            transform: rotate(405deg);
+          }
+        }
+
+        @keyframes antRotate {
+          to {
+            -webkit-transform: rotate(405deg);
+            transform: rotate(405deg);
+          }
+        }
+      </style>
+
+      <div style="
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        justify-content: center;
+        height: 100%;
+        min-height: 362px;
+      ">
+        <div class="page-loading-warp">
+          <div class="ant-spin ant-spin-lg ant-spin-spinning">
+            <span class="ant-spin-dot ant-spin-dot-spin">
+              <i class="ant-spin-dot-item"></i>
+              <i class="ant-spin-dot-item"></i>
+              <i class="ant-spin-dot-item"></i>
+              <i class="ant-spin-dot-item"></i>
+            </span>
+          </div>
+        </div>
+        <div class="loading-title">
+          正在加载资源
+        </div>
+        <div class="loading-sub-title">
+          初次加载资源可能需要较多时间 请耐心等待
+        </div>
+      </div>
+    `;
+  }
+})();