{"id":1558,"date":"2024-11-10T16:06:45","date_gmt":"2024-11-10T08:06:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/1558\/"},"modified":"2024-11-10T16:06:45","modified_gmt":"2024-11-10T08:06:45","slug":"%e5%a6%82%e4%bd%95%e7%94%a8-javascript-%e5%ae%9e%e7%8e%b0%e5%b8%a6%e5%9b%be%e7%89%87%e9%94%99%e8%af%af%e4%bf%a1%e6%81%af%e7%9a%84%e6%96%87%e6%9c%ac%e6%a1%86%e6%a0%a1%e9%aa%8c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/1558\/","title":{"rendered":"\u5982\u4f55\u7528 JavaScript \u5b9e\u73b0\u5e26\u56fe\u7247\u9519\u8bef\u4fe1\u606f\u7684\u6587\u672c\u6846\u6821\u9a8c\uff1f"},"content":{"rendered":"

\"\u5982\u4f55\u7528<\/p>\n

\u5982\u4f55\u5728 javascript \u4e2d\u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\uff0c\u5e76\u5728\u8f93\u5165\u9519\u8bef\u65f6\u5728\u8f93\u5165\u6846\u4e0b\u65b9\u663e\u793a\u5e26\u56fe\u7247\u7684\u9519\u8bef\u4fe1\u606f\uff1f<\/strong><\/p>\n

\u5b9e\u73b0\u8fd9\u79cd\u6587\u672c\u6846\u6821\u9a8c\u6548\u679c\u7684 JavaScript \u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

function validateInput(input) {\n  \/\/ \u83b7\u53d6\u8f93\u5165\u6846\u7684\u503c\n  const value = input.value;\n\n  \/\/ \u6839\u636e\u89c4\u5219\u6821\u9a8c\u8f93\u5165\u5185\u5bb9\u662f\u5426\u4e3a\u7a7a\n  if (!value) {\n    \/\/ \u663e\u793a\u9519\u8bef\u4fe1\u606f\n    const errorMessage = document.createElement(\"p\");\n    errorMessage.className = \"error-message\"; \/\/ \u8fd9\u91cc\u53ef\u4ee5\u81ea\u5b9a\u4e49\u9519\u8bef\u4fe1\u606f\u6837\u5f0f\n    errorMessage.innerHTML = '<img  src=\"error-icon.png\" alt=\"\u5982\u4f55\u7528 JavaScript \u5b9e\u73b0\u5e26\u56fe\u7247\u9519\u8bef\u4fe1\u606f\u7684\u6587\u672c\u6846\u6821\u9a8c\uff1f\" > \u8f93\u5165\u4e0d\u80fd\u4e3a\u7a7a'; \/\/ \u53ef\u4ee5\u81ea\u5b9a\u4e49\u9519\u8bef\u4fe1\u606f\u6587\u672c\u548c\u56fe\u7247\u8def\u5f84\n    input.after(errorMessage);\n  } else {\n    \/\/ \u6821\u9a8c\u6210\u529f\uff0c\u79fb\u9664\u9519\u8bef\u4fe1\u606f\n    const errorMessage = input.nextSibling;\n    if (errorMessage && errorMessage.className === \"error-message\") {\n      errorMessage.remove();\n    }\n  }\n}\n\n\/\/ \u521d\u59cb\u5316\u65f6\u68c0\u6d4b\u5185\u5bb9\u662f\u5426\u4e3a\u7a7a\nwindow.onload = function () {\n  const inputs = document.querySelectorAll(\"input\");\n  inputs.forEach(input => {\n    validateInput(input);\n  });\n};\n\n\/\/ \u5f53\u8f93\u5165\u6846\u5149\u6807\u79bb\u5f00\u65f6\u89e6\u53d1\u6821\u9a8c\ninputs.forEach(input => {\n  input.addEventListener(\"blur\", () => {\n    validateInput(input);\n  });\n});<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4f7f\u7528\u8fd9\u4e2a\u4ee3\u7801\uff0c\u5f53\u6587\u672c\u6846\u4e3a\u7a7a\u65f6\uff0c\u5b83\u5c06\u5728\u8f93\u5165\u6846\u4e0b\u65b9\u663e\u793a\u5e26\u6709\u9519\u8bef\u56fe\u6807\u7684\u9519\u8bef\u4fe1\u606f\u3002\u8f93\u5165\u5185\u5bb9\u7b26\u5408\u89c4\u5219\u540e\uff0c\u9519\u8bef\u4fe1\u606f\u5c06\u81ea\u52a8\u6d88\u5931\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u7528 JavaScript \u5b9e\u73b0\u5e26\u56fe\u7247\u9519\u8bef\u4fe1\u606f\u7684\u6587\u672c\u6846\u6821\u9a8c\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u5728 javascript \u4e2d\u5b9e\u73b0\u6587\u672c\u6846\u6821\u9a8c\uff0c\u5e76\u5728\u8f93\u5165\u9519\u8bef\u65f6\u5728\u8f93\u5165\u6846\u4e0b\u65b9\u663e\u793a\u5e26\u56fe\u7247\u7684\u9519\u8bef\u4fe1\u606f\uff1f \u5b9e\u73b0\u8fd9\u79cd\u6587\u672c\u6846\u6821\u9a8c\u6548\u679c\u7684 JavaScript \u4ee3\u7801\u5982\u4e0b\uff1a function validateInput(input) { \/\/ \u83b7\u53d6\u8f93\u5165\u6846\u7684\u503c const value = input.value; \/\/ \u6839\u636e\u89c4\u5219\u6821\u9a8c\u8f93\u5165\u5185\u5bb9\u662f\u5426\u4e3a\u7a7a if (!value) { \/\/ \u663e\u793a\u9519\u8bef\u4fe1\u606f const errorMessage = document.createElement(“p”); errorMessage.className = “error-message”; \/\/ \u8fd9\u91cc\u53ef\u4ee5\u81ea\u5b9a\u4e49\u9519\u8bef\u4fe1\u606f\u6837\u5f0f errorMessage.innerHTML = ‘<img src=”error-icon.png” alt=”\u5982\u4f55\u7528 JavaScript \u5b9e\u73b0\u5e26\u56fe\u7247\u9519\u8bef\u4fe1\u606f\u7684\u6587\u672c\u6846\u6821\u9a8c\uff1f” > \u8f93\u5165\u4e0d\u80fd\u4e3a\u7a7a’; \/\/ \u53ef\u4ee5\u81ea\u5b9a\u4e49\u9519\u8bef\u4fe1\u606f\u6587\u672c\u548c\u56fe\u7247\u8def\u5f84 input.after(errorMessage); } else { \/\/ \u6821\u9a8c\u6210\u529f\uff0c\u79fb\u9664\u9519\u8bef\u4fe1\u606f const errorMessage = input.nextSibling; if (errorMessage && […]<\/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-1558","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/1558","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=1558"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/1558\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=1558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=1558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=1558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}