{"id":109,"date":"2025-11-22T10:43:04","date_gmt":"2025-11-22T02:43:04","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=109"},"modified":"2025-11-22T10:43:04","modified_gmt":"2025-11-22T02:43:04","slug":"html5%e5%ae%9e%e7%8e%b0%e6%9c%ac%e5%9c%b0%e6%91%84%e5%83%8f%e5%a4%b4%e6%8b%8d%e7%85%a7%e4%b8%8e%e7%85%a7%e7%89%87%e4%b8%8a%e4%bc%a0%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/11\/22\/html5%e5%ae%9e%e7%8e%b0%e6%9c%ac%e5%9c%b0%e6%91%84%e5%83%8f%e5%a4%b4%e6%8b%8d%e7%85%a7%e4%b8%8e%e7%85%a7%e7%89%87%e4%b8%8a%e4%bc%a0%e7%9a%84%e6%96%b9%e6%b3%95\/","title":{"rendered":"HTML5\u5b9e\u73b0\u672c\u5730\u6444\u50cf\u5934\u62cd\u7167\u4e0e\u7167\u7247\u4e0a\u4f20\u7684\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u4e0b\u9762\u7ed9\u4f60\u6574\u7406\u4e00\u4efd <strong>HTML5 \u4f7f\u7528\u672c\u5730\u6444\u50cf\u5934\u62cd\u7167\u5e76\u4e0a\u4f20\u7167\u7247\u7684\u65b9\u6cd5<\/strong>\uff0c\u5305\u542b\u5b8c\u6574\u793a\u4f8b\u548c\u8be6\u7ec6\u8bf4\u660e\uff0c\u9002\u5408\u7f51\u9875\u524d\u7aef\u76f4\u63a5\u4f7f\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">1\ufe0f\u20e3 \u4f7f\u7528 HTML5 \u83b7\u53d6\u6444\u50cf\u5934<\/h1>\n\n\n\n<p>HTML5 \u63d0\u4f9b <strong>MediaDevices.getUserMedia()<\/strong> \u63a5\u53e3\uff0c\u53ef\u4ee5\u8bbf\u95ee\u7528\u6237\u6444\u50cf\u5934\u548c\u9ea6\u514b\u98ce\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;video id=&quot;video&quot; width=&quot;320&quot; height=&quot;240&quot; autoplay&gt;&amp;lt;\/video&gt;\n&amp;lt;button id=&quot;snap&quot;&gt;\u62cd\u7167&amp;lt;\/button&gt;\n&amp;lt;canvas id=&quot;canvas&quot; width=&quot;320&quot; height=&quot;240&quot; style=&quot;display:none;&quot;&gt;&amp;lt;\/canvas&gt;\n&amp;lt;img id=&quot;photo&quot; alt=&quot;\u62cd\u6444\u7684\u7167\u7247&quot;&gt;\n\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><code>&lt;video><\/code>\uff1a\u663e\u793a\u6444\u50cf\u5934\u5b9e\u65f6\u753b\u9762<\/li>\n\n\n\n<li><code>&lt;canvas><\/code>\uff1a\u4e34\u65f6\u5b58\u50a8\u62cd\u6444\u7684\u56fe\u50cf<\/li>\n\n\n\n<li><code>&lt;img><\/code>\uff1a\u663e\u793a\u6700\u7ec8\u7167\u7247<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">2\ufe0f\u20e3 JavaScript \u62cd\u7167\u903b\u8f91<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst video = document.getElementById(&#039;video&#039;);\nconst canvas = document.getElementById(&#039;canvas&#039;);\nconst photo = document.getElementById(&#039;photo&#039;);\nconst snap = document.getElementById(&#039;snap&#039;);\n\n\/\/ \u8bbf\u95ee\u6444\u50cf\u5934\nnavigator.mediaDevices.getUserMedia({ video: true, audio: false })\n    .then(stream =&gt; {\n        video.srcObject = stream;\n        video.play();\n    })\n    .catch(err =&gt; {\n        console.error(&quot;\u65e0\u6cd5\u8bbf\u95ee\u6444\u50cf\u5934: &quot;, err);\n    });\n\n\/\/ \u62cd\u7167\nsnap.addEventListener(&#039;click&#039;, () =&gt; {\n    const context = canvas.getContext(&#039;2d&#039;);\n    context.drawImage(video, 0, 0, canvas.width, canvas.height);\n    \n    \/\/ \u5c06 canvas \u8f6c\u6210\u56fe\u7247\u663e\u793a\n    const dataURL = canvas.toDataURL(&#039;image\/png&#039;);\n    photo.src = dataURL;\n});\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">3\ufe0f\u20e3 \u5c06\u7167\u7247\u4e0a\u4f20\u5230\u670d\u52a1\u5668<\/h1>\n\n\n\n<p>\u5047\u8bbe\u6709\u670d\u52a1\u5668\u63a5\u53e3 <code>upload.php<\/code> \u63a5\u6536 Base64 \u6216\u6587\u4ef6\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nfunction uploadPhoto() {\n    const dataURL = canvas.toDataURL(&#039;image\/png&#039;);\n\n    fetch(&#039;upload.php&#039;, {\n        method: &#039;POST&#039;,\n        body: JSON.stringify({ image: dataURL }),\n        headers: { &#039;Content-Type&#039;: &#039;application\/json&#039; }\n    })\n    .then(response =&gt; response.json())\n    .then(data =&gt; {\n        console.log(&#039;\u4e0a\u4f20\u6210\u529f:&#039;, data);\n        alert(&#039;\u4e0a\u4f20\u6210\u529f&#039;);\n    })\n    .catch(err =&gt; {\n        console.error(&#039;\u4e0a\u4f20\u5931\u8d25:&#039;, err);\n    });\n}\n\nconst uploadBtn = document.createElement(&#039;button&#039;);\nuploadBtn.textContent = &#039;\u4e0a\u4f20\u7167\u7247&#039;;\ndocument.body.appendChild(uploadBtn);\n\nuploadBtn.addEventListener(&#039;click&#039;, uploadPhoto);\n\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><code>canvas.toDataURL('image\/png')<\/code>\uff1a\u5c06\u62cd\u6444\u5185\u5bb9\u8f6c\u6362\u6210 Base64<\/li>\n\n\n\n<li>\u901a\u8fc7 <code>fetch<\/code> \u53d1\u9001\u5230\u670d\u52a1\u5668<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">4\ufe0f\u20e3 \u5b8c\u6574\u793a\u4f8b<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;!DOCTYPE html&gt;\n&amp;lt;html lang=&quot;zh-CN&quot;&gt;\n&amp;lt;head&gt;\n&amp;lt;meta charset=&quot;UTF-8&quot;&gt;\n&amp;lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;\n&amp;lt;title&gt;HTML5 \u6444\u50cf\u5934\u62cd\u7167\u793a\u4f8b&amp;lt;\/title&gt;\n&amp;lt;\/head&gt;\n&amp;lt;body&gt;\n\n&amp;lt;h2&gt;HTML5 \u6444\u50cf\u5934\u62cd\u7167\u4e0e\u4e0a\u4f20\u793a\u4f8b&amp;lt;\/h2&gt;\n\n&amp;lt;video id=&quot;video&quot; width=&quot;320&quot; height=&quot;240&quot; autoplay&gt;&amp;lt;\/video&gt;\n&amp;lt;button id=&quot;snap&quot;&gt;\u62cd\u7167&amp;lt;\/button&gt;\n&amp;lt;canvas id=&quot;canvas&quot; width=&quot;320&quot; height=&quot;240&quot; style=&quot;display:none;&quot;&gt;&amp;lt;\/canvas&gt;\n&amp;lt;img id=&quot;photo&quot; alt=&quot;\u62cd\u6444\u7684\u7167\u7247&quot;&gt;\n\n&amp;lt;button id=&quot;upload&quot;&gt;\u4e0a\u4f20\u7167\u7247&amp;lt;\/button&gt;\n\n&amp;lt;script&gt;\nconst video = document.getElementById(&#039;video&#039;);\nconst canvas = document.getElementById(&#039;canvas&#039;);\nconst photo = document.getElementById(&#039;photo&#039;);\nconst snap = document.getElementById(&#039;snap&#039;);\nconst uploadBtn = document.getElementById(&#039;upload&#039;);\n\n\/\/ \u83b7\u53d6\u6444\u50cf\u5934\nnavigator.mediaDevices.getUserMedia({ video: true, audio: false })\n    .then(stream =&gt; { video.srcObject = stream; video.play(); })\n    .catch(err =&gt; { console.error(&quot;\u65e0\u6cd5\u8bbf\u95ee\u6444\u50cf\u5934: &quot;, err); });\n\n\/\/ \u62cd\u7167\nsnap.addEventListener(&#039;click&#039;, () =&gt; {\n    const context = canvas.getContext(&#039;2d&#039;);\n    context.drawImage(video, 0, 0, canvas.width, canvas.height);\n    photo.src = canvas.toDataURL(&#039;image\/png&#039;);\n});\n\n\/\/ \u4e0a\u4f20\u7167\u7247\nuploadBtn.addEventListener(&#039;click&#039;, () =&gt; {\n    const dataURL = canvas.toDataURL(&#039;image\/png&#039;);\n    fetch(&#039;upload.php&#039;, {\n        method: &#039;POST&#039;,\n        body: JSON.stringify({ image: dataURL }),\n        headers: { &#039;Content-Type&#039;: &#039;application\/json&#039; }\n    })\n    .then(response =&gt; response.json())\n    .then(data =&gt; { alert(&#039;\u4e0a\u4f20\u6210\u529f&#039;); console.log(data); })\n    .catch(err =&gt; { alert(&#039;\u4e0a\u4f20\u5931\u8d25&#039;); console.error(err); });\n});\n&amp;lt;\/script&gt;\n\n&amp;lt;\/body&gt;\n&amp;lt;\/html&gt;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">5\ufe0f\u20e3 \u6ce8\u610f\u4e8b\u9879<\/h1>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6d4f\u89c8\u5668\u517c\u5bb9<\/strong>\n<ul class=\"wp-block-list\">\n<li>Chrome\u3001Firefox\u3001Edge \u652f\u6301<\/li>\n\n\n\n<li>iOS Safari 13+ \u652f\u6301<\/li>\n\n\n\n<li>\u5fc5\u987b HTTPS \u624d\u80fd\u8bbf\u95ee\u6444\u50cf\u5934<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6743\u9650\u95ee\u9898<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u7528\u6237\u9700\u8981\u5141\u8bb8\u6444\u50cf\u5934\u8bbf\u95ee<\/li>\n\n\n\n<li>\u53ef\u4ee5\u6355\u83b7\u5f02\u5e38\u5904\u7406 <code>catch<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4e0a\u4f20\u4f18\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u5c06 Base64 \u8f6c\u6210 Blob\uff0c\u63d0\u9ad8\u4e0a\u4f20\u6548\u7387<\/li>\n\n\n\n<li>\u670d\u52a1\u5668\u9700\u89e3\u7801\u4fdd\u5b58\u56fe\u7247<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u7ed9\u4f60\u6574\u7406\u4e00\u4efd HTML5 \u4f7f\u7528\u672c\u5730\u6444\u50cf\u5934\u62cd\u7167\u5e76\u4e0a\u4f20\u7167\u7247\u7684\u65b9\u6cd5\uff0c\u5305\u542b\u5b8c\u6574\u793a\u4f8b\u548c&#8230; 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