{"id":476,"date":"2024-03-09T21:10:20","date_gmt":"2024-03-09T12:10:20","guid":{"rendered":"https:\/\/www.kd2.jp\/memo3\/?p=476"},"modified":"2024-03-15T18:14:37","modified_gmt":"2024-03-15T09:14:37","slug":"react-%e5%8b%95%e7%9a%84%e3%83%86%e3%83%bc%e3%83%96%e3%83%ab%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/www.kd2.jp\/memo3\/?p=476","title":{"rendered":"React \u52d5\u7684\u30c6\u30fc\u30d6\u30eb\u884c"},"content":{"rendered":"<p><a href=\"\/sandbox\/reacttest1\/\">\u52d5\u4f5c\u30c6\u30b9\u30c8<\/a><\/p>\n<p>&nbsp;<\/p>\n<div class=\"wp-block-codemirror-blocks code-block \">\n<pre class=\"CodeMirror\" data-setting=\"{&quot;mode&quot;:&quot;htmlmixed&quot;,&quot;mime&quot;:&quot;text\/html&quot;,&quot;theme&quot;:&quot;eclipse&quot;,&quot;lineNumbers&quot;:true,&quot;lineWrapping&quot;:false,&quot;styleActiveLine&quot;:false,&quot;readOnly&quot;:true,&quot;align&quot;:&quot;&quot;}\">import { useState } from \"react\";\r\n\r\nfunction FlexibleRowTableTest() {\r\n\r\n    const[line, setLine] = useState&lt;number[]&gt;([]);\r\n    const[count, setCount] = useState&lt;number&gt;(1);\r\n\r\n    \/\/ \u884c\u306e\u8ffd\u52a0\r\n    const addRow = () =&gt; {\r\n        setLine([...line, count]);\r\n        setCount(count + 1);\r\n      }\r\n\r\n    \/\/ \u4e0a\u3078\r\n    const upRow = (i: number) =&gt; {\r\n        if (0 &lt; i) {\r\n            setLine((prevState) =&gt; {\r\n                const tempValue: number = prevState[i];\r\n                const tempLine = prevState.filter((item, j) =&gt; (j !== i));\r\n                tempLine.splice(i-1, 0, tempValue);\r\n                return tempLine; \r\n            });\r\n        }\r\n    }\r\n\r\n    \/\/ \u4e0b\u3078\r\n    const downRow =(i: number) =&gt; {\r\n        if (i &lt; line.length-1) {\r\n            setLine((prevState) =&gt; {\r\n                const tempValue: number = prevState[i];\r\n                const tempLine = prevState.filter((item, j) =&gt; (j !== i));\r\n                tempLine.splice(i+1, 0, tempValue);\r\n                return tempLine; \r\n            });\r\n        }\r\n    }\r\n\r\n    \/\/ \u884c\u306e\u524a\u9664\r\n    const deleteRow = (i: number) =&gt; {\r\n        setLine(line.filter((item, j) =&gt; (j !== i)));\r\n    }\r\n\r\n    return (\r\n        &lt;table&gt;\r\n            {line.map((item: number, i: number)=&gt;(\r\n                &lt;tr&gt;\r\n                    &lt;td&gt;{item}&lt;\/td&gt;\r\n                    &lt;td&gt;&lt;button onClick={() =&gt; upRow(i) }&gt;\u4e0a\u3078&lt;\/button&gt;&lt;\/td&gt;\r\n                    &lt;td&gt;&lt;button onClick={() =&gt; downRow(i) }&gt;\u4e0b\u3078&lt;\/button&gt;&lt;\/td&gt;\r\n                    &lt;td&gt;&lt;button onClick={() =&gt; deleteRow(i) }&gt;\u884c\u524a\u9664&lt;\/button&gt;&lt;\/td&gt;\r\n                &lt;\/tr&gt;\r\n            ))} \r\n        &lt;button onClick={addRow}&gt;\u884c\u8ffd\u52a0&lt;\/button&gt;\r\n        &lt;\/table&gt;\r\n    )\r\n}\r\n\r\nexport default FlexibleRowTableTest;<\/pre>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u52d5\u4f5c\u30c6\u30b9\u30c8 &nbsp; import { useState } from &#8220;react&#8221;; function FlexibleRowTableTest() { const[line, setLine] = useSta&hellip; <a class=\"more-link\" href=\"https:\/\/www.kd2.jp\/memo3\/?p=476\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">React \u52d5\u7684\u30c6\u30fc\u30d6\u30eb\u884c<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[],"_links":{"self":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts\/476"}],"collection":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=476"}],"version-history":[{"count":15,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts\/476\/revisions"}],"predecessor-version":[{"id":492,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts\/476\/revisions\/492"}],"wp:attachment":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}