@orca-fe/pocket
Version:
UI components by orca-team
50 lines (49 loc) • 3.28 kB
JavaScript
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import React, { useState } from 'react';
import { shouldUpdate } from "../..";
import { useInterval } from 'ahooks';
import { jsxs as _jsxs } from "react/jsx-runtime";
import { jsx as _jsx } from "react/jsx-runtime";
var MyComponent = props => {
var _props$num = props.num,
num = _props$num === void 0 ? 1 : _props$num;
return /*#__PURE__*/_jsxs("span", {
children: [`${num} `, Date.now()]
});
};
// 包裹生成一个新组件，仅在 num 属性发生变化是才重新渲染
var NotUpdateMyComponent = shouldUpdate(MyComponent, (props, prevProps) => props.num !== prevProps.num);
var Demo = () => {
var _useState = useState({
num: 0
}),
_useState2 = _slicedToArray(_useState, 2),
num = _useState2[0].num,
setNum = _useState2[1];
useInterval(() => {
setNum({
num: Math.round(Math.random() * 3)
});
}, 1000);
return /*#__PURE__*/_jsxs("div", {
children: [/*#__PURE__*/_jsx("p", {
children: "shouldUpdate \u4E3A\u4F60\u7684\u51FD\u6570\u7EC4\u4EF6\u6DFB\u52A0\u662F\u5426\u91CD\u65B0\u6E32\u67D3\u7684\u80FD\u529B"
}), /*#__PURE__*/_jsx("div", {
children: "\u5F53\u524D\u65F6\u95F4\u6233\uFF1A"
}), Date.now(), /*#__PURE__*/_jsx("p", {}), /*#__PURE__*/_jsx("div", {
children: "\u666E\u901A\u7EC4\u4EF6\uFF08\u6C38\u8FDC\u548C\u65F6\u95F4\u6233\u4FDD\u6301\u4E00\u81F4\uFF09\uFF1A"
}), /*#__PURE__*/_jsx(MyComponent, {
num: num
}), /*#__PURE__*/_jsx("p", {}), /*#__PURE__*/_jsx("div", {
children: "shouldUpdate \u5305\u88F9\u7684\u7EC4\u4EF6\uFF08\u4EC5 num \u53D8\u5316\u65F6\u624D\u91CD\u65B0\u6E32\u67D3\uFF09\uFF1A"
}), /*#__PURE__*/_jsx(NotUpdateMyComponent, {
num: num
})]
});
};
export default Demo;