{"id":1579,"date":"2021-08-06T17:02:18","date_gmt":"2021-08-06T08:02:18","guid":{"rendered":"http:\/\/www.agile-software.site\/?p=1579"},"modified":"2022-06-07T02:18:00","modified_gmt":"2022-06-06T17:18:00","slug":"reactjsx","status":"publish","type":"post","link":"https:\/\/agile-software.net\/?p=1579","title":{"rendered":"React(JSX)"},"content":{"rendered":"\n

React\u306b\u306fHTML\u306e\u30bf\u30b0\u3092\u76f4\u63a5JavaScript\u306b\u8a18\u8ff0\u3059\u308b\u4ed5\u7d44\u307f\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092JSX\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002
JSX\u3092\u4f7f\u3046\u3053\u3068\u3067\u8907\u96d1\u306a\u30bf\u30b0\u306e\u69cb\u9020\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u8a18\u8ff0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n

<script type=”text\/babel”>\u3068\u66f8\u304b\u308c\u3066\u3044\u308b\u306e\u306fBabel\u3068\u3044\u3046\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u3088\u3063\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u30b3\u30f3\u30d1\u30a4\u30eb<\/div>\n

\u3042\u308b\u8a00\u8a9e\u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u3082\u306e\u3092\u5225\u306e\u8a00\u8a9e\u306b\u7f6e\u304d\u63db\u3048\u308b<\/p>\n<\/div>\n\n\n\n

<script type="text\/babel"><\/code><\/pre><\/div>\n\n\n\n

JSX\u3067\u8a18\u8ff0\u3057\u305f\u5024\u306f\u305d\u306e\u307e\u307e\u4eee\u60f3DOM\u306eElement\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067createElement\u3057\u306a\u304f\u3066\u3082\u3088\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
1<\/h2>\n\n\n\n
\n
\n
JSX\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408<\/h3>\n\n\n\n
React.createElement(\n    'bottun',\n    {className: 'btn-blue'},\n    'Click me!'\n)<\/code><\/pre><\/div>\n<\/div>\n\n\n\n
\n
JSX\u3092\u4f7f\u3046\u5834\u5408<\/h3>\n\n\n\n
<bottun className={'btn-blue'}>\n    Click me!\n<\/button><\/code><\/pre><\/div>\n<\/div>\n<\/div>\n\n\n\n
2<\/h2>\n\n\n\n
document.createElement\u306f\u4e00\u822c\u7684\u306aDOM(Element\u30aa\u30d6\u30b8\u30a7\u30af\u30c8)\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001React.createElement\u306fReactElement\u3068\u3044\u3046\u72ec\u81ea\u306eDOM\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002\u3053\u308c\u306fReactDOM\u3068\u547c\u3070\u308c\u308b\u72ec\u81ea\u306eVirtual DOM\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/p>\n\n\n\n
\n
\n
JSX\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408<\/h3>\n\n\n\n
render:function(){\n  return(\n    React.createElement('p',{},'JSX\u3092\u4f7f\u308f\u306a\u3044\u30b5\u30f3\u30d7\u30eb')\n\u3000\u3000);\n}<\/code><\/pre><\/div>\n\n\n\n
<\/i><\/div>
\n
‘p’ \u30bf\u30b0\u306e\u6307\u5b9a<\/p>\n\n\n\n
{} \u5c5e\u6027\u60c5\u5831<\/p>\n\n\n\n
‘JSX\u3092\u4f7f\u308f\u306a\u3044’ \u30b3\u30f3\u30c6\u30f3\u30c4<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n
\n
JSX\u3092\u4f7f\u3046\u5834\u5408<\/h3>\n\n\n\n
var MyComponent = React.createClass({\n      displayName:'my component',\n      render:function(){\n  return(\n    <p>React\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3059<\/p>\n\u3000\u3000);\n}\n});\n\nReactDOM.render(\n  <MyComponent \/>,\ndocument.getElementById('msg')<\/code><\/pre><\/div>\n\n\n\n
<\/i><\/div>
\n
React.createClass\u2192React\u3068\u3044\u3046\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3042\u308bcreateClass\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u3002\u3053\u3053\u3067\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u3002\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u57fa\u672c\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u3092\u753b\u9762\u306b\u8868\u793a\u3059\u308b<\/p>\n\n\n\n
render\u2192\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u8868\u793a\u3059\u308b\u8981\u6c42\u304c\u3042\u3063\u305f\u3068\u304d\u306b\u751f\u6210\u3059\u308bHTML\u3092\u6307\u5b9a\u3059\u308b<\/p>\n\n\n\n
React\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u2192\u5b9f\u884c\u6642\u306bBabel\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u306b\u3088\u3063\u3066\u901a\u5e38\u306eJavaScr4ipt\u6587\u306b\u5909\u63db<\/p>\n\n\n\n
<MyComponent\/>\u2192\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u5185\u5bb9<\/p>\n\n\n\n
document.getElementById(‘msg’)\u2192\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3057\u305f\u7d50\u679c\u3092\u8868\u793a\u3059\u308bDOM\u3092\u6307\u5b9a\u3002id=”msg”\u306e\u30bf\u30b0\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u7d50\u679c\u3092\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
React\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/div>\n
React\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306fReact\u306e\u57fa\u672c\u3068\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3053\u3053\u306b\u6a5f\u80fd\u306e\u4e2d\u5fc3\u3068\u306a\u308b\u30e1\u30bd\u30c3\u30c9\u985e\u304c\u307e\u3068\u3081\u3089\u308c\u3066\u3044\u308b<\/p>\n<\/div>\n\n\n\n
createClass<\/div>\n
\u4f5c\u6210\u3059\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5fc5\u8981\u306a\u60c5\u5831\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u5f15\u6570\u306b\u7528\u610f<\/p>\n\n\n\n
displayName:\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u8a2d\u5b9a\u3055\u308c\u308b\u540d\u524d\u3002\u3053\u308c\u306f\u958b\u767a\u6642\u306b\u30c7\u30d0\u30c3\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u3057\u3066\u4f7f\u308f\u308c\u305f\u308a\u3059\u308b<\/p>\n\n\n\n
render:\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308b\u5185\u5bb9\u3092\u793a\u3059<\/p>\n<\/div>\n\n\n\n
\u5909\u6570el\u306b<div>\u30bf\u30b0\u3092\u305d\u306e\u307e\u307e\u5024\u3068\u3057\u3066\u4ee3\u5165\u3057\u3066\u3044\u308b\u3002
JSX\u306bJavaScript\u306e\u5024\u3092\u57cb\u3081\u8fbc\u3080\u5834\u5408\u306f{}\u306e\u4e2d\u306b\u5909\u6570\u3084\u5024\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u57cb\u3081\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u30bf\u30b0\u306e\u5c5e\u6027\u306e\u5024\u3092\u57cb\u3081\u8fbc\u3080\u5834\u5408\u306f{link}<\/p>\n\n\n\n
  let el = (\n    <div>\n      <h2>JSX sample<\/h2>\n      <p>{title}<\/p>\n    <\/div>\n  )<\/code><\/pre><\/div>\n\n\n\n
<\/i><\/div>
\n
JSX\u306f\u4e00\u3064\u306e\u30a8\u30ec\u30e1\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u4eca\u56de\u306e\u5834\u5408<div>\u30bf\u30b0\u3067\u56f2\u3063\u3066\u3042\u3052\u306a\u3044\u3068<p>\u30bf\u30b0\u3068<h2>\u30bf\u30b0\u306e2\u3064\u306e\u30a8\u30ec\u30e1\u30f3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u305f\u3081\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div><\/div>\n\n\n\n
<!DOCTYPE html>\n<html>\n<head>\n  <meta charset="UTF-8" \/>\n  <title>React<\/title>\n  <script crossorigin src="https:\/\/unpkg.com\/react@17\/umd\/react.development.js"><\/script>\n  <script crossorigin src="https:\/\/unpkg.com\/react-dom@17\/umd\/react-dom.development.js"><\/script>\n<\/head>\n<body>\n  <h1>React<\/h1>\n  <div id="root">wait...<\/div>\n  <script type="text\/babel">\n  let dom = document.querySelector('#root')\n\nlet title = "\u30bf\u30a4\u30c8\u30eb"\n\n  let el = (\n    <div>\n      <h2>JSX sample<\/h2>\n      <p>{title}<\/p>\n    <\/div>\n  )\n\n  ReactDOM.render(el, dom)\n  <\/script>\n<\/body><\/code><\/pre><\/div>\n\n\n\n
className<\/div>\n
JSX\u3067\u306f<div class=”  “>\u3092<div className=”  “>\u3068\u3044\u3046\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n
\u30b9\u30bf\u30a4\u30eb\u8a2d\u5b9a<\/h2>\n\n\n\n
\u30b9\u30bf\u30a4\u30eb\u60c5\u5831\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u307e\u3068\u3081\u3066\u8a2d\u5b9a\u3059\u308b<\/p>\n\n\n\n
\u8907\u96d1\u306a\u8868\u793a\u3092\u4f5c\u308b<\/h2>\n\n\n\n
\u69d8\u3005\u306a\u30bf\u30b0\u3092\u751f\u6210\u3059\u308b\u95a2\u6570\uff08JSX\u3092return\uff09\u3092\u7528\u610f\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u547c\u3073\u51fa\u305b\u3070\u8907\u96d1\u306a\u8868\u793a\u3092\u4f5c\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30a8\u30ec\u30e1\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u3066\u8fd4\u3059\u51e6\u7406\u3067\u3059\u3002<\/p>\n\n\n\n
<\/div>\n
JSX\u306f\u968e\u5c64\u69cb\u9020\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3002(\u4e26\u5217\u3067\u66f8\u3051\u306a\u3044)
React.Fragment\u3067\u56f2\u3080\u3053\u3068\u3067\u4e26\u5217\u3067\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n
return(\n  <React.Fragment>\n    <p><\/p>\n    <p><\/p>\n  <\/React.Fragment>\n)<\/code><\/pre><\/div>\n<\/div>\n\n\n\n
let printMsg = function(msg, size, color){\n  const style = {\n    fontSize: size + "pt",\n    fontWeight:'700',\n    color: color,\n    border: "1px solid " + color\n  }\n  return <p style={style}>{msg}<\/p>\n}\n<\/code><\/pre><\/div>\n\n\n\n
<script type="text\/babel">\nlet dom = document.querySelector('#root')\n\nlet title = "React page."\nlet message = "\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3057\u307e\u3059\u3002"\n\nconst msg = {\n  fontSize:"20pt",\n  fontWeight: "bold",\n  color:"red",\n  border:"2px solid green"\n}\n\nlet printMsg = function(msg, size, color){\n  const style = {\n    fontSize: size + "pt",\n    fontWeight:'700',\n    color: color,\n    border: "1px solid " + color\n  }\n  return <p style={style}>{msg}<\/p>\n}\n\nlet el = (\n  <div>\n    <h4>{title}<\/h4>\n    <h6>{message}<\/h6>\n    <div className="alert alert-secondary mt-3">\n      {printMsg('\u6700\u521d\u306e\u30e1\u30c3\u30bb\u30fc\u30b8', 36, '#fff')}\n      {printMsg('\u6b21\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3059.', 24, '#aaa')}\n      {printMsg('\u6700\u5f8c\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3057\u305f.', 12, '#666')}\n    <\/div>\n  <\/div>\n)\n\nReactDOM.render(el, dom)\n<\/script><\/code><\/pre><\/div>\n\n\n\n
\u6761\u4ef6\u306b\u3088\u308b\u8868\u793a<\/h3>\n\n\n\n
\u771f\u507d\u5024\u304ctrue\u306a\u3089\u3070&&\u306e\u5f8c\u306eJSX\u304c\u8868\u793a\u3055\u308c\u3001false\u306a\u3089\u3070\u8868\u793a\u3055\u308c\u306a\u304f\u306a\u308b\u3002<\/p>\n\n\n\n
<script type="text\/babel">\nlet dom = document.querySelector('#root')\n\nlet title = "React page."\nlet message = "\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3057\u307e\u3059\u3002"\nlet content = `\u203b\u3053\u308c\u304c\u3001true\u306e\u3068\u304d\u306b\u8868\u793a\u3055\u308c\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3059\u3002\n    \u3061\u3083\u3093\u3068\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f`\n\nlet flg = true; \/\/ \u2606\n\nlet el = (\n  <div>\n    <h4>{title}<\/h4>\n    <h6>{message}<\/h6>\n  {flg && \n    <div className="alert alert-primary mt-3">\n      <p>{content}<\/p>\n    <\/div>\n  }\n  <\/div>\n)\n\nReactDOM.render(el, dom)\n<\/script>\n<\/code><\/pre><\/div>\n\n\n\n
\u30ea\u30b9\u30c8\u8868\u793a<\/h3>\n\n\n\n
\u8868\u793a\u306e\u7e70\u308a\u8fd4\u3057<\/h3>\n","protected":false},"excerpt":{"rendered":"
React\u306b\u306fHTML\u306e\u30bf\u30b0\u3092\u76f4\u63a5JavaScript\u306b\u8a18\u8ff0\u3059\u308b\u4ed5\u7d44\u307f\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092JSX\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002JSX\u3092\u4f7f\u3046\u3053\u3068\u3067\u8907\u96d1\u306a\u30bf\u30b0\u306e\u69cb\u9020\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u8a18\u8ff0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u306e\u3067\u3059\u3002 lt;scriptt<\/p>\n","protected":false},"author":1,"featured_media":1580,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jin_ogp_image_url":"","_jin_last_featured_id":0,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-1579","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-react"],"_links":{"self":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts\/1579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1579"}],"version-history":[{"count":4,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts\/1579\/revisions"}],"predecessor-version":[{"id":1981,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/posts\/1579\/revisions\/1981"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=\/wp\/v2\/media\/1580"}],"wp:attachment":[{"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agile-software.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}