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2024年4月12日发(作者：void printn int n)
vue2 项目打印预览空白
English Answer:
Why is the print preview of the Vue2 project blank?
When using Vue2, if you encounter a blank print preview,
it could be due to several reasons. Here are some common
causes and potential solutions:
1. Cross-Origin Issues.
If the content you are trying to print is located on a
different domain or server than the Vue2 application, you
may encounter cross-origin issues. Browsers restrict cross-
origin access to resources for security reasons. To resolve
this issue, you can use a CORS (Cross-Origin Resource
Sharing) proxy server to allow cross-origin requests.
2. Content Not Loaded.
Ensure that the content you intend to print is fully
loaded before triggering the print preview. This includes
images, scripts, and stylesheets. If the content is not
fully loaded, it may appear blank in the print preview. You
can use JavaScript's `onload` event or a lifecycle hook in
Vue2 to verify that the content is loaded before printing.
3. Print Styles Not Applied.
CSS styles may not be applied correctly in the print
preview. By default, browsers apply their styles to printed
documents. You may need to override these styles or create
separate CSS rules specifically for printing.
4. Printer Settings.
Check your printer settings to ensure they are
configured correctly for the paper size and orientation you
intend to print. Incorrect printer settings can lead to
blank pages or misaligned content.
5. Browser Compatibility.
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