{"id":55873,"date":"2024-04-08T20:17:55","date_gmt":"2024-04-08T11:17:55","guid":{"rendered":"https:\/\/kinsta.com\/jp\/?p=55873&post_type=knowledgebase&preview_id=55873"},"modified":"2025-10-02T04:44:43","modified_gmt":"2025-10-01T19:44:43","slug":"jsx-expressions-must-have-one-parent-element","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/jsx-expressions-must-have-one-parent-element\/","title":{"rendered":"React\u306e\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

JSX\u306fJavaScript XML\u306e\u7565\u3067\u3001\u958b\u767a\u8005<\/a>\u304cJavaScript<\/a>\u30d5\u30a1\u30a4\u30eb\u306bHTML<\/a>\u306a\u3069\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u3059\u308bReact<\/a>\u3067\u4fbf\u5229\u306a\u69cb\u6587\u62e1\u5f35\u3067\u3059\u3002<\/p>\n

\u7279\u306bJSX\u3092\u4f7f\u3044\u59cb\u3081\u305f\u3070\u304b\u308a\u306e\u9803\u306f\u3001\u300cJSX expressions must have one parent element\u300d\uff08JSX\u5f0f\u306b\u306f\u89aa\u8981\u7d20\u304c1\u3064\u5fc5\u8981\u3067\u3059\uff09\u3068\u3044\u3046\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u906d\u9047\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\u8907\u6570\u306e\u8981\u7d20\u304c\u89aa\u8981\u7d20\u3067\u30e9\u30c3\u30d7\u3055\u308c\u305a\u306b1\u3064\u306e\u5f0f\u3067\u8fd4\u3055\u308c\u305f\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n

\u307e\u305f\u3001\u985e\u4f3c\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u3001\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\uff08\u96a3\u63a5\u3059\u308bJSX\u8981\u7d20\u306f\u3001\u30bf\u30b0\u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff09\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u4eca\u56de\u306fReact\u958b\u767a\u8005\u5411\u3051\u306b\u3001\u3053\u306e\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u3054\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002
\n

<\/div><\/kinsta-auto-toc><\/p>\n

\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u306e\u539f\u56e0<\/h2>\n

JSX\u306b\u306f\u3001\u5e38\u306b\u5358\u4e00\u306e\u8981\u7d20\u3092\u8fd4\u3059\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30eb\u30fc\u30eb\u306fReact\u306b\u3082\u9069\u7528\u3055\u308c\u3001\u3069\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/a>\u3082\u5358\u4e00\u306e\u30eb\u30fc\u30c8\u8981\u7d20\u3057\u304b\u8fd4\u305b\u307e\u305b\u3093\u3002<\/p>\n

\u3053\u308c\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u969b\u306b\u3001\u6700\u7d42\u7684\u306b\u30da\u30fc\u30b8\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308bHTML\u306b\u5bfe\u5fdc\u3057\u305f\u4eee\u60f3DOM\u30c4\u30ea\u30fc\u304c\u4f5c\u6210\u3055\u308c\u308b\u305f\u3081\u3067\u3059\u3002JSX\u306b\u8907\u6570\u306e\u30eb\u30fc\u30c8\u8981\u7d20\u304c\u3042\u308b\u3068\u3001React\u304c\u305d\u308c\u3089\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u300cJSX expressions must have one parent element\u300d\u3084\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306eJSX\u30b3\u30fc\u30c9\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u8a66\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n

function App() {\n    return (\n        <h1>Hello, world!<\/h1>\n        <p>\u3053\u308c\u306f\u6bb5\u843d\u3067\u3059\u3002<\/p>\n    )\n}<\/code><\/pre>\n
\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
\"\u300cJSX
\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8<\/figcaption><\/figure>\n
\u307e\u305f\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306a\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n
\"\u300cAdjacent
\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8<\/figcaption><\/figure>\n
\u3053\u308c\u3089\u306e\u30a8\u30e9\u30fc\u306f\u30012\u3064\u306e\u30eb\u30fc\u30c8\u8981\u7d20\uff08<h1><\/code>\u3068<p><\/code>\uff09\u304c\u8fd4\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n
JSX\u306f\u8907\u6570\u306e\u5024\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u95a2\u6570\u3068\u540c\u3058\u3088\u3046\u306b\u52d5\u4f5c\u3057\u307e\u3059\uff08\u914d\u5217\u3067\u56f2\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u3092\u9664\u304f\u2500\u914d\u5217\u306f1\u3064\u306e\u5024\u3068\u307f\u306a\u3055\u308c\u308b\uff09\u3002<\/p>\n
function myFunc() {\n  return value1;\n  return value2;\n}<\/code><\/pre>\n
\u4e0a\u8a18\u306e\u95a2\u6570\u3067\u306f1\u3064\u76ee\u306ereturn\u6587\u304c\u5e38\u306b\u5b9f\u884c\u3055\u308c\u308b\u305f\u3081\u30012\u3064\u76ee\u306ereturn\u6587\u307e\u3067\u5230\u9054\u3057\u307e\u305b\u3093\u3002<\/p>\n
\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\uff083\u3064\u306e\u65b9\u6cd5\uff09<\/h2>\n
\u3053\u306e\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u30663\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n
    \n
  • Div\u30bf\u30b0\u3067\u30e9\u30c3\u30d7\u3059\u308b<\/li>\n
  • Fragment\uff08<>\u3068<\/>\uff09\u3067\u30e9\u30c3\u30d7\u3059\u308b<\/li>\n
  • React.Fragment\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b<\/li>\n<\/ul>\n
    1. \u3059\u3079\u3066\u306e\u8981\u7d20\u3092Div\u30bf\u30b0\u3067\u30e9\u30c3\u30d7\u3059\u308b<\/h3>\n
    \u3053\u306e\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u6700\u3082\u7c21\u5358\u306a\u65b9\u6cd5\u306f\u3001\u8907\u6570\u306eJSX\u8981\u7d20\u3092<div>\u306a\u3069\u306e1\u3064\u306e\u89aa\u8981\u7d20\u3067\u30e9\u30c3\u30d7\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n
    \u8981\u7d20\u30921\u3064\u306e\u307e\u3068\u307e\u308a\u3068\u3057\u3066\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u3001\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
    function App() {\n    return (\n        <div>\n            <h1>Hello, world!<\/h1>\n           <p>\u3053\u308c\u306f\u6bb5\u843d\u3067\u3059\u3002<\/p>\n        <\/div>\n    )\n}<\/code><\/pre>\n
    \u4e0a\u306e\u4f8b\u3067\u306f\u3001<h1><\/code>\u3068<p><\/code>\u8981\u7d20\u304c\u3001\u89aa\u8981\u7d20\u3068\u306a\u308b<div><\/code>\u8981\u7d20\u3067\u30e9\u30c3\u30d7\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
    2. \u3059\u3079\u3066\u306e\u8981\u7d20\u3092Fragment\u3067\u30e9\u30c3\u30d7\u3059\u308b<\/h3>\n
    \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u300cJSX expressions must have one parent element\u300d\u307e\u305f\u306f\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\u3092\u89e3\u6c7a\u3059\u308b\u3082\u30461\u3064\u306e\u65b9\u6cd5\u3067\u306f\u3001JSX Fragment\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
    Fragment\uff08\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\uff09\u306fReact\u306e\u7d44\u307f\u8fbc\u307f\u6a5f\u80fd\u3067\u3001DOM\u306b\u4f59\u5206\u306a\u30ce\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u5b50\u8981\u7d20\u306e\u30ea\u30b9\u30c8\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308bHTML\u306b\u4f59\u8a08\u306aDOM\u30ce\u30fc\u30c9\u3092\u52a0\u3048\u305a\u3001\u8907\u6570\u306e\u8981\u7d20\u3092\u5358\u4e00\u306e\u89aa\u8981\u7d20\u3067\u30e9\u30c3\u30d7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n
    function App() {\n    return (\n        <>\n            <h1>Hello, world!<\/h1>\n            <p>\u3053\u308c\u306f\u6bb5\u843d\u3067\u3059\u3002<\/p>\n        <\/>\n    )\n}<\/code><\/pre>\n
    JSX Fragment\uff08<>\u3068<\/>\uff09\u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u8981\u7d20\u3092\u30e9\u30c3\u30d7\u3057\u3066\u304a\u308a\u3001\u3053\u306eFragment\u306f\u89aa\u8981\u7d20\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n
    3. \u3059\u3079\u3066\u306e\u8981\u7d20\u3092React.Fragment\u3067\u30e9\u30c3\u30d7\u3059\u308b<\/h3>\n
    \u6700\u5f8c\u306b\u3001\u901a\u5e38\u306e\u8981\u7d20\u306e\u4ee3\u308f\u308a\u306bReact.Fragment<\/code>\u8981\u7d20\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \u3053\u308c\u306f\u3001Fragment\u3068\u540c\u3058\u3088\u3046\u306b\u6a5f\u80fd\u3057\u307e\u3059\u304c\u3001\u3082\u3046\u5c11\u3057\u660e\u793a\u7684\u3067\u3001\u89aa\u8981\u7d20\u306b\u7279\u5b9a\u306e\u30ad\u30fc\u3084\u305d\u306e\u4ed6\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4e0e\u3048\u305f\u3044\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002\u4f8b\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n
    function App() {\n    return (\n        <React.Fragment>\n            <h1>Hello, world!<\/h1>\n            <p>\u3053\u308c\u306f\u6bb5\u843d\u3067\u3059\u3002<\/p>\n       <\/React.Fragment>\n    )\n}<\/code><\/pre>\n
    \u4e0a\u306e\u4f8b\u3067\u306f\u3001\u89aa\u8981\u7d20\u3068\u3057\u3066\u901a\u5e38\u306e\u8981\u7d20\u306e\u4ee3\u308f\u308a\u306b\u3001React.Fragment<\/code>\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u8907\u6570\u306e\u8981\u7d20\u3092 <><\/>\u3067\u56f2\u3080\u3053\u3068\u3067\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308bHTML\u306b\u4f59\u8a08\u306a\u30ce\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u8981\u7d20\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n
    React.Fragment<\/code>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001React<\/strong>\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001Fragment\u81ea\u4f53\u306bprops\u3084className<\/code>\u3001style<\/code>\u3001id<\/code>\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001Fragment\u5185\u306e\u8981\u7d20\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u30b9\u30bf\u30a4\u30eb\u306a\u3069\u306e\u5c5e\u6027\u3092\u9069\u7528\u3057\u305f\u3044\u5834\u5408\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n
    \u6761\u4ef6\u6587\u306e\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b<\/h2>\n
    React\u3067\u6761\u4ef6\u4ed8\u304d\u4e09\u9805\u6f14\u7b97\u5b50\u3092\u6271\u3046\u5834\u5408\u306b\u3082\u3001\u300cJSX expressions must have one parent element\u300d\u3084\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
    \u3053\u308c\u306f\u3001\u6761\u4ef6\u6587\u306e\u4e2d\u304b\u3089\u8907\u6570\u306e\u8981\u7d20\u304c\u8fd4\u3055\u308c\u305f\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001React\u304c\u6b63\u3057\u304f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u3044\u305a\u308c\u304b\u306e\u30a8\u30e9\u30fc\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
    function App() {\n    return (\n        <div>\n            {condition ? (\n                <h1>\u898b\u51fa\u30571<\/h1>\n                <p>\u6bb5\u843d1<\/p>\n                        ) : (\n                <h2>\u898b\u51fa\u30572<\/h2>\n                <p>\u6bb5\u843d2<\/p>\n            )}\n        <\/div>\n    )\n}<\/code><\/pre>\n
    \u3053\u306e\u30a8\u30e9\u30fc\u3082\u3001\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305f3\u3064\u306e\u65b9\u6cd5\u306e\u3044\u305a\u308c\u304b\u3067\u89e3\u6c7a\u53ef\u80fd\u3067\u3059\u3002Fragment\uff08<><\/code>\u3068<\/><\/code>\uff09\u307e\u305f\u306f<div><\/code>\u8981\u7d20\u3092\u4f7f\u7528\u3059\u308b\u306e\u304c\u304a\u52e7\u3081\u3067\u3059\u3002<\/p>\n
    function App() {\n    return (\n        <div>\n            {condition ? (\n                <>\n                    <h1>\u898b\u51fa\u30571<\/h1>\n                   <p>\u6bb5\u843d1<\/p>\n                <\/>\n            ) : (\n                <>\n                    <h2>\u898b\u51fa\u30572<\/h2>\n                    <p>\u6bb5\u843d2<\/p>\n                <\/>\n            )\n            }\n        <\/div>\n    )\n}<\/code><\/pre>\n
    \u307e\u3068\u3081<\/h2>\n
    \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u300cJSX expressions must have one parent element\u300d\u307e\u305f\u306f\u300cAdjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>\u2026<\/>?\u300d\u306f\u3001React\u521d\u5fc3\u8005\u304c\u906d\u9047\u3057\u304c\u3061\u306a\u554f\u984c\u3067\u3059\u3002<\/p>\n
    <div><\/code>\u8981\u7d20\u3092\u4f7f\u7528\u3059\u308b\u306e\u304c\u6700\u3082\u7c21\u5358\u306a\u89e3\u6c7a\u7b56\u3067\u3059\u304c\u3001DOM\u306b\u4e0d\u8981\u306adiv\u30bf\u30b0\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002Fragment\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001DOM\u306b\u4f59\u8a08\u306a\u30ce\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u3059\u3063\u304d\u308a\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \u3053\u306e\u554f\u984c\u306b\u906d\u9047\u3057\u305f\u7d4c\u9a13\u306f\u3042\u308a\u307e\u3059\u304b\uff1f\u307e\u305f\u3001\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305f\u3082\u306e\u4ee5\u5916\u306b\u3082\u89e3\u6c7a\u7b56\u3092\u3054\u5b58\u77e5\u3067\u3057\u305f\u3089\u3001\u4ee5\u4e0b\u306e\u30b3\u30e1\u30f3\u30c8\u6b04\u3067\u305c\u3072\u304a\u805e\u304b\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    JSX\u306fJavaScript XML\u306e\u7565\u3067\u3001\u958b\u767a\u8005\u304c …<\/p>\n","protected":false},"author":287,"featured_media":55874,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"topic":[802,803],"class_list":["post-55873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","topic-react","topic-react-errors"],"yoast_head":"\nReact\u306e\u300cJSX expressions must have one parent element\u300d\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\uff5cKinsta\u00ae<\/title>\n<meta name=\"description\" content=\"React\u3067\u767a\u751f\u3059\u308b\u300cJSX expressions must have one parent 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