canvas中的toDataURL

canvas中的toDataURL()方法是用来将canvas对象转换为包含图像展示的数据URL的方法。这个方法可以接受一个可选的type参数，用来指定图像的格式，默认为PNG格式。这个方法将返回一个包含图像数据的base64编码的字符串。需要注意的是，当在canvas上绘制了来自不同源的图像时，使用toDataURL()方法可能会出现安全错误，提示"Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported." [1][2][3<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *1* *3* [canvas学习——toDataURL()方法](https://blog.csdn.net/XuM222222/article/details/82667084)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [canvas的toDataURL()方法](https://blog.csdn.net/first_shun/article/details/106753024)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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