{"id":52937,"date":"2024-12-03T11:47:11","date_gmt":"2024-12-03T03:47:11","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52937\/"},"modified":"2024-12-03T11:47:11","modified_gmt":"2024-12-03T03:47:11","slug":"javascript%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e8%8e%b7%e5%8f%96%e6%95%b0%e6%8d%ae%e6%97%b6%e5%87%ba%e7%8e%b0undefined%ef%bc%8c%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52937\/","title":{"rendered":"JavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>JavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aJavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241124\/173245504967432a89ab8d7.jpg\" class=\"aligncenter\" title=\"JavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u63d2\u56fe\" alt=\"JavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>js\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u65f6\u6570\u636e\u524d\u9762\u51fa\u73b0undefined\u95ee\u9898\u7684\u5904\u7406\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728javascript\u4e2d\uff0c\u5982\u679c\u4f7f\u7528\u6570\u7ec4\u7684length\u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff0c\u4f46\u6570\u7ec4\u4e2d\u6ca1\u6709\u5143\u7d20\uff0c\u5c31\u4f1a\u8fd4\u56deundefined\u3002\u5728\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u65f6\uff0c\u4e5f\u53ef\u80fd\u9047\u5230\u540c\u6837\u7684\u95ee\u9898\u3002<\/p>\n<p>\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u5728\u83b7\u53d6\u957f\u5ea6\u4e4b\u524d\uff0c\u5148\u4e3a\u6570\u7ec4\u5206\u914d\u4e00\u5b9a\u6570\u91cf\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5728\u4ee5\u4e0b\u4ee3\u7801\u4e2d\uff1a<\/p>\n<pre>var lists = [];\n$(\"#model\").children(\"div\").each(function (i) {\n    lists[i][] = [];\n    lists[i][0] += $(\"#one\").val();\n    lists[i][1] += $(\"#two\").val();\n    lists[i][2] += $(\"#thtee\").val();\n    lists[i][3] += $(\"#four\").val();\n});<\/pre>\n<p>\u95ee\u9898\u51fa\u5728 lists[i][] = []; \u8fd9\u884c\u4ee3\u7801\u4e0a\u3002\u5b83\u5c1d\u8bd5\u8bbe\u7f6e\u6570\u7ec4\u7684\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u4f46\u6ca1\u6709\u6307\u5b9a\u4efb\u4f55\u503c\u3002\u56e0\u6b64\uff0cinner\u6570\u7ec4\u5b9e\u9645\u4e0a\u4e3a\u7a7a\uff0c\u5bfc\u81f4 undefined \u7684\u51fa\u73b0\u3002<\/p>\n<p>\u6b63\u786e\u7684\u89e3\u51b3\u65b9\u6848\u662f\uff1a<\/p>\n<pre>var lists = [];\n$(\"#Model\").children(\"div\").each(function (i) {\n    lists[i] = []; \/\/ \u8fd9\u91cc\u6539\u4e3a\u521b\u5efa\u7a7a\u7684\u6570\u7ec4\n    lists[i][0] = $(\"#One\").val();\n    lists[i][1] = $(\"#Two\").val();\n    lists[i][2] = $(\"#Thtee\").val();\n    lists[i][3] = $(\"#Four\").val();\n});<\/pre>\n<p>\u8fd9\u6837\uff0cinner\u6570\u7ec4\u5c06\u88ab\u6b63\u786e\u5730\u521b\u5efa\uff0c\u4e0d\u4f1a\u51fa\u73b0 undefined \u503c\u3002<\/p>\n<p>\u672c\u7bc7\u5173\u4e8e\u300aJavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u5982\u4f55\u6709\u6548\u5904\u7406 Redis \u4e2d\u7684\u5927 key \u95ee\u9898\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f \u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aJavaScript\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u6570\u636e\u65f6\u51fa\u73b0undefined\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002 js\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u65f6\u6570\u636e\u524d\u9762\u51fa\u73b0undefined\u95ee\u9898\u7684\u5904\u7406\u65b9\u6cd5 \u5728javascript\u4e2d\uff0c\u5982\u679c\u4f7f\u7528\u6570\u7ec4\u7684length\u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff0c\u4f46\u6570\u7ec4\u4e2d\u6ca1\u6709\u5143\u7d20\uff0c\u5c31\u4f1a\u8fd4\u56deundefined\u3002\u5728\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u65f6\uff0c\u4e5f\u53ef\u80fd\u9047\u5230\u540c\u6837\u7684\u95ee\u9898\u3002 \u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u5728\u83b7\u53d6\u957f\u5ea6\u4e4b\u524d\uff0c\u5148\u4e3a\u6570\u7ec4\u5206\u914d\u4e00\u5b9a\u6570\u91cf\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5728\u4ee5\u4e0b\u4ee3\u7801\u4e2d\uff1a var lists = []; $(&#8220;#model&#8221;).children(&#8220;div&#8221;).each(function (i) { lists[i][] = []; lists[i][0] += $(&#8220;#one&#8221;).val(); lists[i][1] += $(&#8220;#two&#8221;).val(); lists[i][2] += $(&#8220;#thtee&#8221;).val(); lists[i][3] += $(&#8220;#four&#8221;).val(); }); \u95ee\u9898\u51fa\u5728 lists[i][] = []; \u8fd9\u884c\u4ee3\u7801\u4e0a\u3002\u5b83\u5c1d\u8bd5\u8bbe\u7f6e\u6570\u7ec4\u7684\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u4f46\u6ca1\u6709\u6307\u5b9a\u4efb\u4f55\u503c\u3002\u56e0\u6b64\uff0cinner\u6570\u7ec4\u5b9e\u9645\u4e0a\u4e3a\u7a7a\uff0c\u5bfc\u81f4 undefined \u7684\u51fa\u73b0\u3002 \u6b63\u786e\u7684\u89e3\u51b3\u65b9\u6848\u662f\uff1a var lists = []; $(&#8220;#Model&#8221;).children(&#8220;div&#8221;).each(function (i) { lists[i] = []; \/\/ \u8fd9\u91cc\u6539\u4e3a\u521b\u5efa\u7a7a\u7684\u6570\u7ec4 lists[i][0] = $(&#8220;#One&#8221;).val(); lists[i][1] = $(&#8220;#Two&#8221;).val(); lists[i][2] [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-52937","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=52937"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52937\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}