{"id":5514,"date":"2023-05-19T15:51:04","date_gmt":"2023-05-19T07:51:04","guid":{"rendered":"https:\/\/app.applebyme.cn\/cloud\/?p=5514"},"modified":"2023-05-19T15:51:04","modified_gmt":"2023-05-19T07:51:04","slug":"domtoimage%e6%89%93%e5%8c%85%e6%9c%89%e9%82%a3%e4%ba%9b%e4%bd%9c%e7%94%a8%e5%91%80%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/app.applebyme.cn\/cloud\/exekaifa\/5514.html","title":{"rendered":"domtoimage\u6253\u5305\u6709\u90a3\u4e9b\u4f5c\u7528\u5440\uff1f"},"content":{"rendered":"

DomToImage\u662f\u4e00\u4e2aJavaScript\u5e93\uff0c\u5b83\u53ef\u4ee5\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u5c06HTML\u548cCSS\u8f6c\u6362\u4e3a\u56fe\u50cf\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u5c06\u5176\u4fdd\u5b58\u4e3aPNG\u3001JPEG\u6216WEBP\u683c\u5f0f\u7684\u56fe\u50cf\u3002\u8fd9\u4e2a\u5e93\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u5b83\u4f7f\u5f97\u5728JavaScript\u4e2d\u751f\u6210\u56fe\u50cf\u53d8\u5f97\u975e\u5e38\u5bb9\u6613\u3002<\/p>\n

DomToImage\u7684\u539f\u7406\u662f\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3acanvas\u5143\u7d20\uff0c\u7136\u540e\u4f7f\u7528canvas\u5143\u7d20\u7684toDataURL()\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n

1. \u4f7f\u7528HTML2Canvas\u5e93\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3acanvas\u5143\u7d20\u3002HTML2Canvas\u662f\u4e00\u4e2a\u5f00\u6e90\u7684JavaScript\u5e93\uff0c\u5b83\u53ef\u4ee5\u5c06\u4efb\u4f55DOM\u5143\u7d20\u8f6c\u6362\u4e3acanvas\u5143\u7d20\u3002<\/p>\n

2. \u4f7f\u7528canvas\u5143\u7d20\u7684toDataURL()\u65b9\u6cd5\u5c06canvas\u5143\u7d20\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002toDataURL()\u65b9\u6cd5\u5c06canvas\u5143\u7d20\u8f6c\u6362\u4e3a\u4e00\u4e2abase64\u7f16\u7801\u7684\u5b57\u7b26\u4e32\uff0c\u8fd9\u4e2a\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f5c\u4e3a\u56fe\u50cf\u7684\u6e90\u3002<\/p>\n

3. \u5c06base64\u7f16\u7801\u7684\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Image\u5bf9\u8c61\uff0c\u7136\u540e\u5c06base64\u7f16\u7801\u7684\u5b57\u7b26\u4e32\u4f5c\u4e3aImage\u5bf9\u8c61\u7684\u6e90\u6765\u5b8c\u6210\u3002<\/p>\n

DomToImage\u53ef\u4ee5\u901a\u8fc7NPM\u5305\u7ba1\u7406\u5668\u8fdb\u884c\u5b89\u88c5\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7CDN\u5f15\u5165\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528DomToImage\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3a\u56fe\u50cf\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

“`javascript<\/p>\n

import domtoimage from ‘dom-to-image’;<\/p>\n

const element = docum\u7f51\u9875\u8f6cexe\u8f6f\u4ef6<\/a>ent.getElementById(‘my-element’);<\/p>\n

domtoimage.toPng(element)<\/p>\n

.then(function (dataUrl) {<\/p>\n

const img = new Image();<\/p>\n

img.src = dataUrl;<\/p>\n

document.body.appendChild(img);<\/p>\n

})<\/p>\n

.catch(function (errom\u6587\u4ef6\u751f\u6210exe<\/a>r) {<\/p>\n

console.error(‘oops, something went wrong!’, error);<\/p>\n

});<\/p>\n

“`<\/p>\n

\u5728\u8fd9\u4e2a\u793a\u4f8b\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528document.getElementById()\u65b9\u6cd5\u83b7\u53d6DOM\u5143\u7d20\uff0c\u7136\u540e\u4f7f\u7528DomToImage\u7684toPng()\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3aPNG\u683c\u5f0f\u7684\u56fe\u50cf\u3002\u7136\u540e\uff0c\u6211\u4eec\u5c06\u56fe\u50cf\u6dfb\u52a0\u5230\u6587\u6863\u4e2d\u3002<\/p>\n

\u603b\u7684\u6765\u8bf4\uff0cDomToImage\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684J<\/p>\n

<\/figure>\n<\/p>\n

avaScript\u5e93\uff0c\u5b83\u53ef\u4ee5\u8ba9\u5f00\u53d1\u8005\u8f7b\u677e\u5730\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002\u5b83\u7684\u539f\u7406\u662f\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3acanvas\u5143\u7d20\uff0c\u7136\u540e\u4f7f\u7528canvas\u5143\u7d20\u7684toDataURL()\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002\u5982\u679c\u4f60\u9700\u8981\u5728JavaScript\u4e2d\u751f\u6210\u56fe\u50cf\uff0c\u90a3\u4e48DomToImage\u662f\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u9009\u62e9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

DomToImage\u662f\u4e00\u4e2aJavaScript\u5e93\uff0c\u5b83\u53ef\u4ee5\u5c06DOM\u5143\u7d20\u8f6c\u6362\u4e3a\u56fe\u50cf\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u5c06HTML\u548cCSS\u8f6c\u6362\u4e3a\u56fe\u50cf\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u5c06\u5176\u4fdd\u5b58\u4e3aPNG\u3001JPEG\u6216WEBP\u683c\u5f0f\u7684\u56fe\u50cf\u3002\u8fd9\u4e2a\u5e93\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u5b83<\/p>\n","protected":false},"author":23,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[7889,3126,4752,7888,3522],"class_list":{"0":"post-5514","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-exekaifa","7":"tag-exe","8":"tag-3126","9":"tag-4752","11":"tag-3522"},"_links":{"self":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/posts\/5514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/comments?post=5514"}],"version-history":[{"count":0,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/posts\/5514\/revisions"}],"wp:attachment":[{"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/media?parent=5514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/categories?post=5514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/app.applebyme.cn\/cloud\/wp-json\/wp\/v2\/tags?post=5514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}