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/** * datepicker function * @param {string} selector : "#id", ".className" * @param {function} callback : function (event) { setRecord({ ...record, Date: event.formattedDate }); }, record.Date); * @param {string} dateString : "2023-07-11" * * https://air-datepicker.com/docs * https://github.com/t1m0n/air-datepicker/tree/v3/dist * Example: // Air Datepicker and Cleave.js and React.js const e = React.createElement; e(Cleave, { options: { date: true, delimiter: '-', datePattern: ['Y', 'm', 'd'] }, id: "date", value: record.Date, onChange: e => { setRecord({ ...record, Date: e.target.value }); }, onClick: e => { datepicker("#date", function (event) { setRecord({ ...record, Date: event.formattedDate }); }, record.Date); }, // onFocus: ... placeholder: "YYYY-MM-DD", style: { gridColumn: "span 2" }, }), */ function datepicker(selector, callback, dateString) { let obj = new AirDatepicker(selector, { // startDate: record.Date, locale: { days: ['日', '月', '火', '水', '木', '金', '土'], daysShort: ['日', '月', '火', '水', '木', '金', '土'], daysMin: ['日', '月', '火', '水', '木', '金', '土'], months: ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'], monthsShort: ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'], today: '今日', clear: 'クリア', // dateFormat: 'yyyy-mm-dd', dateFormat: 'yyyy-MM-dd', // timeFormat: 'hh:ii aa', timeFormat: 'HH:mm', firstDay: 0 }, position: 'top center', dateFormat: "yyyy-MM-dd", range: false, timepicker: false, // multipleDates: true, // Title format: navTitles: { // days: 'MM, <i>yyyy</i>', days: 'yyyy 年 MM 月', months: 'yyyy', years: 'yyyy1 - yyyy2' }, onSelect: function (event) { if (event) { callback(event); } }, onHide: function (event) { if (event) { obj.destroy(); obj = null; } }, }); const regex = /^(\d{4})-(\d{2})-(\d{2})$/; if (regex.test(dateString)) { const matches = dateString.match(regex); obj.selectDate(new Date(Number(matches[1]), Number(matches[2]) - 1, Number(matches[3]))); } obj.show(); } |
React Hooks で Input Float してみる / Try Input Float with React Hooks
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/** * Input Float numeric Plain React Hooks function * * props: * value * numeralDecimalScale * onChange * id * className * style */ function InputFloat(props) { const e = React.createElement; const refInput = React.useRef(null); const numeralDecimalScale = React.useRef(props.numeralDecimalScale ? props.numeralDecimalScale : 2); const SaveValue = React.useRef(format(props.value)); const Start = React.useRef(0); const End = React.useRef(0); const [value, setValue] = React.useState({ value: format(props.value) }); // Prop value changed React.useEffect(() => { if (props == undefined || props.value === undefined) { return; } // console.log("change props", props, props.value); if (float(props.value) == float(SaveValue.current)) { // console.log("not change props.value", props, props.value); return; } const v = format(props.value); setV(v, 0, 0); setValue({ value: v }); }, [props.value]); // Set cursor position after change state value React.useEffect(() => { refInput.current.setSelectionRange(Start.current, End.current); }, [value]); function setV(v, start, end) { // console.log("setV", v, start, end); SaveValue.current = v; Start.current = start; End.current = end; } /** * Using: * agh.sprintf.js * https://github.com/akinomyoga/agh.sprintf.js */ function format(v) { // console.log("format from", v); v += ""; const sign = v.indexOf("-") >= 0; const f = float(v); v = sprintf("%'0.0" + numeralDecimalScale.current + "f", f); if (sign && f == 0) { v = "-" + v; } return v; } // convert to float function float(v) { v += ""; const dot = dotPosition(v); let f = parseFloat(v.substring(0, dot + numeralDecimalScale.current + 1).replaceAll(",", "")); if (isNaN(f)) { f = 0; } return f; } function dotPosition(v) { v += ""; let dot = v.indexOf("."); if (dot == -1) { dot = v.length; } return dot; } /** * position より前の位置にある , の数を数える * Count the number of "," before the position of v */ function countComma(v, position) { const targetStr = ","; return (v.substring(0, position).match(new RegExp(targetStr, "g")) || []).length; } function replace(src, position, s) { return format(src.substring(0, position) + s + src.substring(position + s.length)); } function insert(src, position, s) { return format(src.substring(0, position) + s + src.substring(position)); } // src の position 位置から n 文字削除 // Delete n characters from position in src function remove(src, position, n) { return src.substring(0, position) + src.substring(position + n); } function handleKeyDown(e) { // console.log("handleKeyDown", e); // console.log("Key pressed: ", e.key); // console.log("Key pressed: ", e.which); let v = e.target.value; let c = e.key; let start = refInput.current.selectionStart; let end = refInput.current.selectionEnd; if (c == "Process" || c == "Control") { return false; } // console.log("c", c, "start", start, "end", end, "dom", v, "v", v); // Selected if (start != end) { if ((c >= "0" || c <= "9") || c == "-") { const co1 = countComma(v, start); v = remove(v, start, end - start); v = insert(v, start, c); v = format(v); const co2 = countComma(v, start - 1); const co = co1 - co2 - 1; setV(v, start - co, start - co); return; } // No change setV(v, start, end); return; } const dot = dotPosition(v); // console.log("c", c, "start", start, "end", end, "dot", dot, "dom", v, "v", v); if (c == "Delete") { const del = v.substring(start + 1, start); // console.log("del", del); if (del == ".") { // don't delete float point dot // No change setV(v, start, end); return; } if (start > dot) { // decimal part v = replace(v, start, "0"); setV(v, start + 1, end + 1); return; } if (del == ",") { const co1 = countComma(v, start + 1); v = remove(v, start + 1, 1); v = format(v); const co2 = countComma(v, start); const co = 1 - (co1 - co2); setV(v, start + co, end + co); return; } const co1 = countComma(v, start); v = remove(v, start, 1); v = format(v); const co2 = countComma(v, start - 1); const co = (co1 - co2); setV(v, start - co, end - co); return; } if (c == "Backspace") { if (dot + 1 == start) { // don't delete float point dot // No change setV(v, start - 1, end - 1); return; } if (start > dot) { // decimal part v = replace(v, start - 1, "0"); setV(v, start - 1, end - 1); return; } // real part const del = v.substring(start - 1, start); let cursorBack = 1; if (del == ",") { start--; end--; cursorBack = 2; } const co1 = countComma(v, start); v = remove(v, start - 1, 1); v = format(v); const co2 = countComma(v, start - 1); const co = cursorBack + (co1 - co2); setV(v, start - co, end - co); return; } // Input text ------------------ // console.log("c", c, "dot", dot, "start", start, "end", end, "dom", v, "v", v); if (c == ".") { // No change and Move cursor setV(v, dot + 1, dot + 1); refInput.current.setSelectionRange(dot + 1, dot + 1); return; } if (c == "-") { if (float(v) >= 0) { v = format("-" + v); setV(v, start + 1, end + 1); } else { // No change setV(v, start, end); } return; } if (c == "+") { if (float(v) < 0) { v = format(v.replace("-", "")); setV(v, start - 1, end - 1); } else { // No change setV(v, start, end); } return; } if (c == "0") { if (start > dot) { // decimal part v = replace(v, start, c); setV(v, start + 1, end + 1); return; } v = insert(v, start, c); setV(v, start + 1, end + 1); return; } if (c >= "1" && c <= "9") { if (start > dot) { // decimal part v = replace(v, start, c); setV(v, start + 1, end + 1); return; } // if real part is 0 if (parseInt(float(SaveValue.current)) == 0 && start <= dot) { // |0.?? or 0|.?? v = replace(v, dot - 1, c); setV(v, dot, dot); return; } if (start <= dot) { const c1 = countComma(v, start); v = insert(v, start, c); const c2 = countComma(v, start + 1); if (c2 > c1) { start++; end++; } setV(v, start + 1, end + 1); return; } } // No change setV(v, start, end); } // End of long long handleKeyDown // Select all text const handleFocus = () => { refInput.current.setSelectionRange(0, refInput.current.value.length); }; const handleChange = (event) => { // console.log("handleChange"); setValue({ value: SaveValue.current }); // Call props.onChange event.target.rawValue = float(SaveValue.current); event.target.value = format(SaveValue.current); props.onChange(event); }; // Render return e("input", { ref: refInput, id: props.id, className: props.className, style: props.style ? props.style : { textAlign: "right", imeMode: "disabled" }, value: value.value, onKeyDown: e => { handleKeyDown(e); }, onChange: e => { handleChange(e); }, onFocus: () => { handleFocus(); }, }); } export default InputFloat; |
ウェブ検索では見つけられなかったので作ってみたが
こんな感じいいのか？ Chrome, Edge, Firefox では動作している
波括弧で囲って欲しいです…
ChatGPT に言ってもらったほうが説得力がある…(;_;)
UTF-8 文字列を含む response.statusText を JavaScript で文字列にデコードするメモ / Decode UTF-8 string within response.statusText to string with JavaScript
PHP で statusText に日本語 UTF-8 を入れて javascript へ送り返したところ…読めない
忘れそうなのでメモ
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const statusText = decodeURIComponent(escape(response.statusText)); |
element の位置やサイズを小数点以下まで取得したい時
element.getBoundingClientRect()
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React.js で Hooks でも JSX したくない時 / If don’t want to use JSX in React.js Hooks too.
index.js:
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// import React, { useState } from 'react' // const Context = React.createContext({ foo: 0, bar: 1 }, () => { }); const Context = React.createContext(); const Grandchild2 = () => { const e = React.createElement; return e(Context.Consumer, {}, value => { return e("div", {}, e("p", {}, `Grandchild2 ${value.values.bar}`), e("button", { onClick: () => value.setCount({ ...value.values, foo: value.values.foo + 100 }), }, "Click"), ); }); }; const Grandchild1 = () => { const e = React.createElement; const value = React.useContext(Context); // console.log(value); return e("p", {}, `Grandchild1 ${value.values.foo}`); }; const Child = () => { const e = React.createElement; return e("div", {}, [ e(Grandchild1, { key: 1 }), e(Grandchild2, { key: 2 }), ]); }; const App = () => { // console.log("App"); const e = React.createElement; // const Context = React.createContext(); const [values, setCount] = React.useState({ foo: 0, bar: 1 }); // console.log(values); // Similar to componentDidMount and componentDidUpdate: React.useEffect(() => { // Update the document title using the browser API document.title = `You clicked ${values.foo} times`; }); return ( e(Context.Provider, { value: { values: values, setCount: setCount } }, e("p", {}, `Count: ${values.foo}, ${values.bar}`), e("button", { onClick: () => setCount({ foo: values.foo + 1, bar: values.bar + 1 }), }, "Click"), e(Child), ) ); }; // export default App |
index.html:
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<!DOCTYPE html> <html lang="ja"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Hooks</title> <script src="./js/lib/react.development.js"></script> <script src="./js/lib/react-dom.development.js"></script> </head> <body> <div id="root"></div> <script src="./js/index.js"></script> <script> (function () { const e = React.createElement; ReactDOM.render(e(App), document.getElementById("root")); })(); </script> </body> </html> |
特に普通(?)だった。