{"id":170844,"date":"2024-05-08T17:16:23","date_gmt":"2024-05-08T09:16:23","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/170844.html"},"modified":"2024-05-08T17:16:28","modified_gmt":"2024-05-08T09:16:28","slug":"javascript-%e7%bc%96%e7%a8%8b%e7%9a%84-show-%e6%96%b9%e6%b3%95%e6%80%8e%e4%b9%88%e8%b0%83%e7%94%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/170844.html","title":{"rendered":"JavaScript \u7f16\u7a0b\u7684 show \u65b9\u6cd5\u600e\u4e48\u8c03\u7528"},"content":{"rendered":"

\"JavaScript<\/p>\n

\u5728JavaScript\u7f16\u7a0b\u4e2d\uff0c\u8c03\u7528show\u65b9\u6cd5\u901a\u5e38\u662f\u4e3a\u4e86\u663e\u793a\u67d0\u4e2a\u5143\u7d20\u3001\u4fe1\u606f\u6216\u6267\u884c\u67d0\u79cd\u663e\u793a\u903b\u8f91\u3002\u8c03\u7528show\u65b9\u6cd5\u7684\u5e38\u89c1\u573a\u666f\u5305\u62ec\u4f7f\u9690\u85cf\u7684HTML\u5143\u7d20\u53ef\u89c1\u3001\u663e\u793a\u5f39\u51fa\u4fe1\u606f\u3001\u6216\u662f\u5728\u7279\u5b9a\u64cd\u4f5c\u540e\u5c55\u793a\u6570\u636e<\/strong>\u3002\u8fd9\u4e9b\u64cd\u4f5c\u6d89\u53ca\u76f4\u63a5\u4f7f\u7528JavaScript\u5185\u7f6e\u51fd\u6570\u3001\u4fee\u6539CSS\u5c5e\u6027\u3001\u6216\u8fd0\u7528JavaScript\u6846\u67b6\u548c\u5e93\uff08\u5982jQuery\uff09\u8fdb\u884c\u66f4\u9ad8\u7ea7\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n

\u5c55\u5f00\u8be6\u7ec6\u63cf\u8ff0\uff0c\u4f7f\u9690\u85cf\u7684HTML\u5143\u7d20\u53ef\u89c1<\/strong>\u662f\u8c03\u7528show\u65b9\u6cd5\u6700\u76f4\u89c2\u7684\u5e94\u7528\u4e4b\u4e00\u3002\u8fd9\u901a\u5e38\u901a\u8fc7\u6539\u53d8\u5143\u7d20\u7684CSS\u6837\u5f0f\u6765\u5b9e\u73b0\uff0c\u5982\u5c06\u5143\u7d20\u7684display<\/code>\u5c5e\u6027\u4ecenone<\/code>\u4fee\u6539\u4e3ablock<\/code>\u6216inline<\/code>\uff0c\u4f7f\u4e4b\u6210\u4e3a\u53ef\u89c1\u72b6\u6001\u3002\u8fd9\u79cd\u65b9\u5f0f\u7b80\u5355\u6613\u884c\uff0c\u5bf9\u4e8e\u57fa\u672c\u7684\u663e\u793a\u9690\u85cf\u64cd\u4f5c\u975e\u5e38\u6709\u6548\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u5728\u4e0d\u540c\u7684\u60c5\u5883\u4e0b\u8c03\u7528show\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u539f\u751fJavaScript\u4e2d\u8c03\u7528Show\u65b9\u6cd5<\/h3>\n<\/p>\n

\u5728\u6ca1\u6709\u4f7f\u7528\u4efb\u4f55\u5e93\u6216\u6846\u67b6\u7684\u7eafJavaScript\u4e2d\uff0c\u8c03\u7528show\u65b9\u6cd5\u4e3b\u8981\u4f9d\u9760\u64cd\u4f5cDOM\u5143\u7d20\u7684\u6837\u5f0f\u3002<\/p>\n<\/p>\n

\u663e\u793a\u9690\u85cf\u7684HTML\u5143\u7d20<\/h4>\n<\/p>\n

\u9996\u5148\uff0c\u4f60\u9700\u8981\u901a\u8fc7JavaScript\u83b7\u53d6\u5230\u9700\u8981\u663e\u793a\u7684DOM\u5143\u7d20\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7document.getElementById()<\/code>\u3001document.getElementsByClassName()<\/code>\u7b49\u65b9\u6cd5\u5b9e\u73b0\u3002\u83b7\u53d6\u5143\u7d20\u540e\uff0c\u4f60\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u5176style\u5c5e\u6027\u4e2d\u7684display\u503c\u4e3a'block'<\/code>\u6216\u662f'inline'<\/code>\uff0c\u53d6\u51b3\u4e8e\u4f60\u5e0c\u671b\u8be5\u5143\u7d20\u5982\u4f55\u663e\u793a\u3002<\/p>\n<\/p>\n

function showElement() {<\/p>\n
  var x = document.getElementById("myElement");<\/p>\n
  if (x.style.display === "none") {<\/p>\n
    x.style.display = "block";<\/p>\n
  }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u52a8\u6001\u6dfb\u52a0\u663e\u793a\u903b\u8f91<\/h4>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u7528\u6237\u64cd\u4f5c\u6216\u5176\u4ed6\u903b\u8f91\u52a8\u6001\u663e\u793a\u5143\u7d20\u3002\u6b64\u65f6\uff0c\u53ef\u4ee5\u5c06\u663e\u793a\u903b\u8f91\u5c01\u88c5\u5728\u4e00\u4e2a\u51fd\u6570\u4e2d\uff0c\u7136\u540e\u5728\u5408\u9002\u7684\u65f6\u673a\u8c03\u7528\u8be5\u51fd\u6570\u3002<\/p>\n<\/p>\n
function toggleVisibility() {<\/p>\n
  var x = document.getElementById("toggleElement");<\/p>\n
  if (x.style.display === "none") {<\/p>\n
    x.style.display = "block";<\/p>\n
  } else {<\/p>\n
    x.style.display = "none";<\/p>\n
  }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528CSS\u7c7b\u6765\u63a7\u5236\u663e\u793a<\/h3>\n<\/p>\n
\u6709\u65f6\uff0c\u76f4\u63a5\u64cd\u4f5c\u5143\u7d20\u7684style\u5c5e\u6027\u5e76\u4e0d\u662f\u6700\u4f18\u96c5\u7684\u65b9\u5f0f\uff0c\u7279\u522b\u662f\u5f53\u663e\u793a\u903b\u8f91\u6d89\u53ca\u591a\u4e2a\u6837\u5f0f\u6539\u53d8\u65f6\u3002\u8fd9\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5207\u6362\u5143\u7d20\u7684\u7c7b\u6765\u63a7\u5236\u663e\u793a\u72b6\u6001\u3002<\/p>\n<\/p>\n
\u5b9a\u4e49CSS\u663e\u793a\u7c7b<\/h4>\n<\/p>\n
\u9996\u5148\uff0c\u5b9a\u4e49\u4e00\u4e2aCSS\u7c7b\uff0c\u8be5\u7c7b\u4e2d\u5305\u542b\u4e86\u5143\u7d20\u53ef\u89c1\u65f6\u7684\u6240\u6709\u5fc5\u8981\u6837\u5f0f\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a.visible<\/code>\u7c7b\uff0c\u5f53\u9700\u8981\u663e\u793a\u5143\u7d20\u65f6\uff0c\u5c06\u8fd9\u4e2a\u7c7b\u6dfb\u52a0\u5230\u5143\u7d20\u4e0a\u3002<\/p>\n<\/p>\n
.visible {<\/p>\n
  display: block !important; \/* \u786e\u4fdd\u8986\u76d6\u5176\u4ed6display\u8bbe\u7f6e *\/<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5207\u6362\u5143\u7d20\u7c7b\u6765\u663e\u793a\u5143\u7d20<\/h4>\n<\/p>\n
\u5728JavaScript\u4e2d\uff0c\u4f7f\u7528classList.add()<\/code>\u65b9\u6cd5\u4e3a\u5143\u7d20\u6dfb\u52a0.visible<\/code>\u7c7b\uff0c\u4f7f\u7528classList.remove()<\/code>\u79fb\u9664\u8be5\u7c7b\uff0c\u4ece\u800c\u63a7\u5236\u5143\u7d20\u7684\u663e\u793a\u548c\u9690\u85cf\u3002<\/p>\n<\/p>\n
function showElementById(id) {<\/p>\n
  var element = document.getElementById(id);<\/p>\n
  element.classList.add("visible");<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528jQuery\u5e93\u8c03\u7528Show\u65b9\u6cd5<\/h3>\n<\/p>\n
jQuery\u662f\u4e00\u4e2a\u5feb\u901f\u3001\u5c0f\u5de7\u3001\u529f\u80fd\u4e30\u5bcc\u7684JavaScript\u5e93\u3002\u8c03\u7528show\u65b9\u6cd5\u662fjQuery\u4e2d\u76f8\u5f53\u57fa\u7840\u7684\u529f\u80fd\u4e4b\u4e00\u3002<\/p>\n<\/p>\n
\u57fa\u672c\u7684show\u65b9\u6cd5\u8c03\u7528<\/h4>\n<\/p>\n
\u4f7f\u7528jQuery\uff0c\u53ef\u4ee5\u975e\u5e38\u7b80\u6d01\u5730\u5b9e\u73b0\u663e\u793a\u903b\u8f91\u3002\u53ea\u9700\u8981\u4e00\u4e2a\u7b80\u5355\u7684.show()<\/code>\u8c03\u7528\u5c31\u53ef\u4ee5\u4f7f\u5143\u7d20\u53ef\u89c1\u3002jQuery\u5185\u90e8\u4f1a\u5904\u7406\u9700\u8981\u4fee\u6539\u7684\u6837\u5f0f\u3002<\/p>\n<\/p>\n
$("#myElement").show();<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u9ad8\u7ea7\u663e\u793a\u6548\u679c<\/h4>\n<\/p>\n
jQuery\u8fd8\u5141\u8bb8\u4f60\u6dfb\u52a0\u4e00\u4e9b\u52a8\u753b\u6548\u679c\uff0c\u4f7f\u5143\u7d20\u663e\u793a\u7684\u8fc7\u7a0b\u66f4\u52a0\u5e73\u6ed1\u3001\u6709\u8da3\u3002<\/p>\n<\/p>\n
$("#myElement").show("slow"); \/\/ \u5143\u7d20\u4ee5\u6162\u901f\u52a8\u753b\u663e\u793a<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u7ed3\u5408Vue\u3001React\u7b49\u73b0\u4ee3\u524d\u7aef\u6846\u67b6<\/h3>\n<\/p>\n
\u5728\u73b0\u4ee3web\u5f00\u53d1\u4e2d\uff0cVue\u3001React\u7b49\u524d\u7aef\u6846\u67b6\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7ea7\u3001\u66f4\u58f0\u660e\u5f0f\u7684\u65b9\u5f0f\u6765\u63a7\u5236\u5143\u7d20\u7684\u663e\u793a\u4e0e\u9690\u85cf\u3002<\/p>\n<\/p>\n
\u5728Vue\u4e2d\u4f7f\u7528v-show<\/h4>\n<\/p>\n
Vue\u6846\u67b6\u63d0\u4f9b\u4e86v-show<\/code>\u6307\u4ee4\uff0c\u901a\u8fc7\u7b80\u5355\u7684\u5e03\u5c14\u503c\u63a7\u5236\u5143\u7d20\u7684\u663e\u793a\u4e0e\u9690\u85cf\u3002<\/p>\n<\/p>\n
<div id="app"><\/p>\n
  <p v-show="isVisible">Now you see me<\/p><\/p>\n
<\/div><\/p>\n
<\/code><\/pre>\n<\/p>\n
var app = new Vue({<\/p>\n
  el: '#app',<\/p>\n
  data: {<\/p>\n
    isVisible: true<\/p>\n
  }<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728React\u4e2d\u7684\u6761\u4ef6\u6e32\u67d3<\/h4>\n<\/p>\n
React\u901a\u8fc7JavaScript\u8868\u8fbe\u5f0f\u76f4\u63a5\u5728JSX\u4e2d\u8fdb\u884c\u6761\u4ef6\u6e32\u67d3\uff0c\u52a8\u6001\u51b3\u5b9a\u662f\u5426\u6e32\u67d3\u67d0\u4e2a\u7ec4\u4ef6\u6216\u5143\u7d20\u3002<\/p>\n<\/p>\n
function MyComponent({ isVisible }) {<\/p>\n
  return (<\/p>\n
    <div><\/p>\n
      { isVisible && <p>Now you see me<\/p> }<\/p>\n
    <\/div><\/p>\n
  );<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8c03\u7528show\u65b9\u6cd5\u6765\u5b9e\u73b0\u5143\u7d20\u7684\u663e\u793a\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u9009\u62e9\u54ea\u4e00\u79cd\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u9879\u76ee\u9700\u6c42\u3001\u6280\u672f\u6808\u4ee5\u53ca\u4e2a\u4eba\u504f\u597d\u3002\u65e0\u8bba\u662f\u901a\u8fc7\u7eafJavaScript\u64cd\u4f5cDOM\u3001\u4f7f\u7528CSS\u7c7b\u6765\u63a7\u5236\u6837\u5f0f\u3001\u5229\u7528jQuery\u5b9e\u73b0\u5feb\u901f\u7684\u52a8\u6548\uff0c\u8fd8\u662f\u5728\u73b0\u4ee3\u524d\u7aef\u6846\u67b6\u4e2d\u58f0\u660e\u5f0f\u5730\u63a7\u5236\u663e\u793a\u903b\u8f91\uff0c\u91cd\u8981\u7684\u662f\u7406\u89e3\u80cc\u540e\u7684\u539f\u7406\u548c\u9002\u7528\u573a\u666f\u3002\u901a\u8fc7\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u4f60\u4f1a\u66f4\u52a0\u7075\u6d3b\u5730\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u8c03\u7528show\u65b9\u6cd5\uff0c\u4f7f\u4f60\u7684Web\u5e94\u7528\u754c\u9762\u66f4\u52a0\u4e30\u5bcc\u548c\u4e92\u52a8\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u5982\u4f55\u5728JavaScript\u7f16\u7a0b\u4e2d\u8c03\u7528show\u65b9\u6cd5\uff1f<\/strong><\/p>\n
\u8c03\u7528JavaScript\u7f16\u7a0b\u4e2d\u7684show\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u786e\u4fdd\u60a8\u5df2\u7ecf\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3ashow\u7684\u51fd\u6570\u6216\u65b9\u6cd5\u3002\u7136\u540e\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u51fd\u6570\u540d\u540e\u8ddf\u5706\u62ec\u53f7\u6765\u8c03\u7528\u8be5\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3ashow\u7684\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7 typing "show();" \u6765\u8c03\u7528\u5b83\u3002\u5982\u679c\u60a8\u5b9a\u4e49\u4e86\u4e00\u4e2ashow\u65b9\u6cd5\u5e76\u4e14\u5b83\u5c5e\u4e8e\u4e00\u4e2a\u5bf9\u8c61\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7 typing "objectName.show();" \u6765\u8c03\u7528\u5b83\uff0c\u5176\u4e2dobjectName\u662f\u5305\u542bshow\u65b9\u6cd5\u7684\u5bf9\u8c61\u7684\u540d\u79f0\u3002<\/p>\n
2. \u5982\u4f55\u6b63\u786e\u5730\u4f7f\u7528\u53c2\u6570\u8fdb\u884cJavaScript\u7f16\u7a0b\u4e2d\u7684show\u65b9\u6cd5\u8c03\u7528\uff1f<\/strong><\/p>\n
\u8c03\u7528\u5177\u6709\u53c2\u6570\u7684show\u65b9\u6cd5\u9700\u8981\u5728\u8c03\u7528\u65f6\u4f20\u9012\u6b63\u786e\u7684\u53c2\u6570\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u7684show\u65b9\u6cd5\u5e26\u6709\u4e00\u4e2a\u53c2\u6570\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u5728\u8c03\u7528\u4e2d\u4f7f\u7528\u53c2\u6570\u503c\u6765\u4f20\u9012\u8be5\u53c2\u6570\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u7684show\u65b9\u6cd5\u5e26\u6709\u4e00\u4e2a\u540d\u4e3amessage\u7684\u53c2\u6570\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7 typing "show('Hello World');" \u6765\u8c03\u7528\u8be5\u65b9\u6cd5\u5e76\u4f20\u9012\u5b57\u7b26\u4e32"Hello World"\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n
3. \u5728JavaScript\u7f16\u7a0b\u4e2d\uff0c\u5982\u4f55\u5904\u7406show\u65b9\u6cd5\u8fd4\u56de\u7684\u503c\uff1f<\/strong><\/p>\n
\u5982\u679c\u60a8\u7684show\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u503c\uff0c\u60a8\u53ef\u4ee5\u5728\u8c03\u7528\u4ee3\u7801\u4e2d\u6355\u83b7\u5e76\u4f7f\u7528\u8be5\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u7684show\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u60a8\u53ef\u4ee5\u5c06\u8c03\u7528\u65b9\u6cd5\u7684\u7ed3\u679c\u8d4b\u503c\u7ed9\u4e00\u4e2a\u53d8\u91cf\uff0c\u5e76\u5728\u4ee3\u7801\u4e2d\u8fdb\u4e00\u6b65\u5904\u7406\u8be5\u53d8\u91cf\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a "var result = show(); console.log(result);" \u8fd9\u5c06\u8c03\u7528show\u65b9\u6cd5\u5e76\u5c06\u5176\u8fd4\u56de\u7684\u503c\u5b58\u50a8\u5728\u540d\u4e3aresult\u7684\u53d8\u91cf\u4e2d\uff0c\u5e76\u5c06\u8be5\u503c\u6253\u5370\u5230\u6d4f\u89c8\u5668\u7684\u63a7\u5236\u53f0\u4e0a\u3002\u8fd9\u6837\uff0c\u60a8\u53ef\u4ee5\u5bf9\u8fd4\u56de\u7684\u503c\u8fdb\u884c\u66f4\u591a\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u5728\u9875\u9762\u4e0a\u663e\u793a\u5b83\u6216\u5c06\u5b83\u4f20\u9012\u7ed9\u5176\u4ed6\u51fd\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u7f16\u7a0b\u4e2d\uff0c\u8c03\u7528show\u65b9\u6cd5\u901a\u5e38\u662f\u4e3a\u4e86\u663e\u793a\u67d0\u4e2a\u5143\u7d20\u3001\u4fe1\u606f\u6216\u6267\u884c\u67d0\u79cd\u663e\u793a\u903b\u8f91\u3002\u8c03\u7528show\u65b9\u6cd5 […]","protected":false},"author":3,"featured_media":170853,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/170844"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=170844"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/170844\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/170853"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=170844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=170844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=170844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}