尝试使用 javascript 停止图像加载
有没有办法用javasript停止图像下载?我想从图像标签中提取所有网址,并仅在用户滚动到特定标签时才开始加载图像。我知道我可以通过以下方式停止下载
window.stop()
但是通过使用此解决方法,浏览器也会停止加载 CSS 文件中定义的背景图像。
那么有没有一种方法可以在不实现“标记解决方法”(例如“将图像 url 包含到跨度或其他内容中”)的情况下实现这一目标。
is there a way to halt the image download with javasript? I would like to extract all urls from the image tags and start the image loading only when the user scrolls to a specific one. I know that I can stop the download via
window.stop()
But by using this workaround the browser stops also loading the background images which are defined in the CSS file(s).
So is there a way to achieve this without implementing a "markup workaround" such as "including the image url into a span or something".
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您可以使用 JavaScript 完全删除 src 属性,这将有效地阻止图像被下载。
这将确保如果用户禁用了 JS,您的图像仍然会被加载,因为您稍后将使用 JS 删除 src 属性。
然后,您可以将 url 存储在变量中,并在想要再次加载它们时将其设置回来。
关键点是不要留下空的 src 属性(
src=""
),否则浏览器将把它视为“/”,实际上是在尝试加载您的主页并将其存储在图像中元素。您必须完全删除 src 属性。You can remove the src attribute entirely using JavaScript, this will effectively stop the images from being downloaded.
This will ensure your images will still be loaded if a user has JS disabled, because you are removing the src attributer later on using JS.
You can then store the url in a variable and set it back when you want to load them again.
The key point it not leaving an empty src attribute (
src=""
), otherwise it will be treated by the browser as '/', actually trying to load your home page and store it in the image element. You have to remove the src attribute entirely.我遇到了类似的问题,以下是我的解决方法:
简而言之:
在创建元素时,我制作了
src='Blank.gif'
并创建了setAttribute("data-src",response[i].photo_url)
。由于Blank.gif
不存在,如果下面的代码不起作用,或者加载速度不够快,它将被渲染为损坏的图像链接...然后,onscoll 我查看了一下当它在视图中并将 src 设置为“data-src”时。这对我来说非常有效...
详细信息!
希望这可以节省其他人 2 1/2 小时的搜索/工作!
如果您认为有一种方法可以提高上述效率,请随时告诉我!
I had a similar problem and here's how I solved it:
In a nut shell:
When creating the element I made
src='Blank.gif'
and I createdsetAttribute("data-src",response[i].photo_url)
. Seeing asBlank.gif
doesn't exist, it would be rendered as a broken image link if the below didn't work, or it cant load fast enough...Then, onscoll i checked to see when it was in view and set the src to the 'data-src'. This works very well for me...
The details!
Hope this can save someone else 2 1/2 hours of searching/work!
Feel free to let me know if you think there's a way to make the above more efficient!