{"id":170561,"date":"2024-05-08T17:10:34","date_gmt":"2024-05-08T09:10:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/170561.html"},"modified":"2024-05-08T17:10:38","modified_gmt":"2024-05-08T09:10:38","slug":"javascript-%e7%bc%96%e7%a8%8b%e4%b8%ad%e6%80%8e%e4%b9%88%e4%bd%bf%e7%94%a8-innerhtml","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/170561.html","title":{"rendered":"JavaScript \u7f16\u7a0b\u4e2d\u600e\u4e48\u4f7f\u7528 innerHTML"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27041328\/b468d0f3-de04-49ff-ba88-e5673ad3ee3e.webp\" alt=\"JavaScript \u7f16\u7a0b\u4e2d\u600e\u4e48\u4f7f\u7528 innerHTML\" 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class=\"language-javascript\">document.getElementById(&#039;elementId&#039;).innerHTML = &#039;\u65b0\u7684\u5185\u5bb9&#039;;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6bb5\u4ee3\u7801\u67e5\u627eID\u4e3a<code>elementId<\/code>\u7684\u5143\u7d20\uff0c\u5e76\u5c06\u5176\u5185\u5bb9\u66ff\u6362\u4e3a<code>\u65b0\u7684\u5185\u5bb9<\/code>\u3002\u5982\u679c<code>\u65b0\u7684\u5185\u5bb9<\/code>\u5305\u542bHTML\u6807\u8bb0\uff0c\u8fd9\u4e9b\u6807\u8bb0\u4e5f\u4f1a\u88ab\u6d4f\u89c8\u5668\u89e3\u6790\u5e76\u5448\u73b0\u51fa\u76f8\u5e94\u7684\u683c\u5f0f\u3002<\/p>\n<\/p>\n<p><h4>\u83b7\u53d6innerHTML\uff1a<\/h4>\n<\/p>\n<p><p>\u540c\u6837\u5730\uff0cinnerHTML\u4e5f\u53ef\u4ee5\u7528\u6765\u83b7\u53d6\u67d0\u4e2a\u5143\u7d20\u5185\u7684HTML\u5185\u5bb9\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">var content = document.getElementById(&#039;elementId&#039;).innerHTML;<\/p>\n<p>console.log(content);<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u8fd9\u6bb5\u4ee3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u5230ID\u4e3a<code>elementId<\/code>\u7684\u5143\u7d20\u5185\u7684\u5168\u90e8HTML\u5185\u5bb9\uff0c\u5e76\u901a\u8fc7console.log\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u3002\u8fd9\u5bf9\u4e8e\u52a8\u6001\u5206\u6790\u9875\u9762\u7ed3\u6784\u6216\u5bf9\u5143\u7d20\u5185\u5bb9\u8fdb\u884c\u8fdb\u4e00\u6b65\u5904\u7406\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4e0etextContent\u7684\u5bf9\u6bd4<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u7eaf\u6587\u672c\u5185\u5bb9\uff0c\u800c\u4e0d\u9700\u8981HTML\u6807\u7b7e\u65f6\uff0c\u53ef\u80fd\u4f1a\u66f4\u503e\u5411\u4e8e\u4f7f\u7528textContent\u5c5e\u6027\uff0c\u56e0\u4e3a\u8fd9\u6837\u53ef\u4ee5\u907f\u514dHTML\u6ce8\u5165\u98ce\u9669\uff0c\u5e76\u4e14\u901a\u5e38\u6027\u80fd\u66f4\u597d\u3002<\/p>\n<\/p>\n<p><p><strong>\u4f7f\u7528textContent\u65f6\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u6216\u83b7\u53d6\u5143\u7d20\u7684\u7eaf\u6587\u672c\u5185\u5bb9\uff0c\u800c\u4e0d\u4f1a\u89e3\u6790HTML\u6807\u7b7e<\/strong>\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5982\u679c\u4f60\u7ed9textContent\u8d4b\u503c\u5305\u542bHTML\u6807\u7b7e\u7684\u5b57\u7b26\u4e32\uff0c\u9875\u9762\u4e0a\u663e\u793a\u7684\u5c06\u662f\u6240\u6709\u7684\u5b57\u7b26\uff0c\u5305\u62ec\u6807\u7b7e\u672c\u8eab\uff0c\u800c\u4e0d\u662f\u88ab\u6807\u7b7e\u683c\u5f0f\u5316\u7684\u6587\u672c\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u6027\u80fd\u548c\u5b89\u5168\u8003\u8651<\/h3>\n<\/p>\n<p><p>\u5f53\u4f7f\u7528innerHTML\u4fee\u6539\u9875\u9762\u5185\u5bb9\u65f6\uff0c\u6d4f\u89c8\u5668\u4f1a\u89e3\u6790\u7ed9\u5b9a\u7684\u5b57\u7b26\u4e32\uff0c\u5e76\u521b\u5efa\u76f8\u5e94\u7684DOM\u8282\u70b9\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u6bd4\u4ec5\u4ec5\u66f4\u6539\u6587\u672c\u5185\u5bb9\u8981\u590d\u6742\u548c\u8017\u65f6\u3002\u56e0\u6b64\uff0c\u9891\u7e41\u5730\u4f7f\u7528innerHTML\u66f4\u65b0\u5927\u91cf\u5185\u5bb9\u53ef\u80fd\u4f1a\u5f71\u54cd\u9875\u9762\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><p><strong>\u66f4\u91cd\u8981\u7684\u662f\uff0c\u7531\u4e8einnerHTML\u4f1a\u89e3\u6790\u4f20\u5165\u7684\u5b57\u7b26\u4e32\u5e76\u5c06\u5176\u4f5c\u4e3aHTML\u6267\u884c\uff0c\u6240\u4ee5\u6709\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8de8\u7ad9\u811a\u672c\u653b\u51fb\uff08XSS\uff09<\/strong>\u3002\u56e0\u6b64\uff0c\u5f53\u4f7f\u7528innerHTML\u5411\u9875\u9762\u6dfb\u52a0\u4e0d\u53d7\u4fe1\u7684\u5185\u5bb9\u65f6\uff0c\u59cb\u7ec8\u8981\u786e\u4fdd\u5185\u5bb9\u662f\u5b89\u5168\u7684\uff0c\u6216\u8005\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\uff0c\u5982textContent\u6216DOM\u64cd\u4f5c\u65b9\u6cd5\uff0c\u6765\u907f\u514d\u8fd9\u79cd\u5b89\u5168\u98ce\u9669\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5b9e\u9645\u5e94\u7528\u793a\u4f8b<\/h3>\n<\/p>\n<p><h4>\u52a8\u6001\u66f4\u65b0\u9875\u9762\u5185\u5bb9\uff1a<\/h4>\n<\/p>\n<p><p>\u5229\u7528innerHTML\uff0c\u53ef\u4ee5\u5feb\u901f\u5b9e\u73b0\u5bf9\u9875\u9762\u67d0\u90e8\u5206\u7684\u52a8\u6001\u66f4\u65b0\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u4e2a\u7f51\u7ad9\u4e2d\u5b9e\u73b0\u4e00\u4e2a\u5b9e\u65f6\u641c\u7d22\u529f\u80fd\uff0c\u6839\u636e\u7528\u6237\u7684\u8f93\u5165\u52a8\u6001\u663e\u793a\u5339\u914d\u7684\u7ed3\u679c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">function updateSearchResults(data) {<\/p>\n<p>    var resultsDiv = document.getElementById(&#039;searchResults&#039;);<\/p>\n<p>    resultsDiv.innerHTML = &#039;&#039;; \/\/ \u6e05\u7a7a\u5f53\u524d\u5185\u5bb9<\/p>\n<p>    data.forEach(function(item) {<\/p>\n<p>        resultsDiv.innerHTML += &#039;&lt;div&gt;&#039; + item + &#039;&lt;\/div&gt;&#039;; \/\/ \u6dfb\u52a0\u65b0\u7684\u641c\u7d22\u7ed3\u679c<\/p>\n<p>    });<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>\u521b\u5efa\u4ea4\u4e92\u5f0f\u5217\u8868\uff1a<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528innerHTML\u548c\u76d1\u542c\u5668\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u80fd\u591f\u54cd\u5e94\u7528\u6237\u64cd\u4f5c\u7684\u4ea4\u4e92\u5f0f\u5217\u8868\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">function addItemToList(itemText) {<\/p>\n<p>    var list = document.getElementById(&#039;myList&#039;);<\/p>\n<p>    var listItem = &#039;&lt;li onclick=&quot;removeItem(this)&quot;&gt;&#039; + itemText + &#039;&lt;\/li&gt;&#039;;<\/p>\n<p>    list.innerHTML += listItem; \/\/ \u6dfb\u52a0\u65b0\u9879\u76ee<\/p>\n<p>}<\/p>\n<p>function removeItem(item) {<\/p>\n<p>    item.remove(); \/\/ 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