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author | Tim Zallmann <tzallmann@gitlab.com> | 2017-07-27 11:23:34 +0200 |
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committer | Tim Zallmann <tzallmann@gitlab.com> | 2017-07-27 15:01:27 +0200 |
commit | 710d0435f7c54801ff9efafc14a46095f3c83244 (patch) | |
tree | e8fac60cd034531393c0655901f46c8e88dc81b7 /doc/development/fe_guide/performance.md | |
parent | 14b9c83f41efeaa8f5468dcb81986d118e74d2d3 (diff) | |
download | gitlab-ce-710d0435f7c54801ff9efafc14a46095f3c83244.tar.gz |
Changed Images in Blob Viewer to image_tag35577-fix-image-blob-display-due-to-lazy-image-loading
Updated documentation about the lazy class
Diffstat (limited to 'doc/development/fe_guide/performance.md')
-rw-r--r-- | doc/development/fe_guide/performance.md | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/development/fe_guide/performance.md b/doc/development/fe_guide/performance.md index f25313d6cff..14ac1133cc0 100644 --- a/doc/development/fe_guide/performance.md +++ b/doc/development/fe_guide/performance.md @@ -29,11 +29,12 @@ To improve the time to first render we are using lazy loading for images. This w the actual image source on the `data-src` attribute. After the HTML is rendered and JavaScript is loaded, the value of `data-src` will be moved to `src` automatically if the image is in the current viewport. -* Prepare images in HTML for lazy loading by renaming the `src` attribute to `data-src` +* Prepare images in HTML for lazy loading by renaming the `src` attribute to `data-src` AND adding the class `lazy` * If you are using the Rails `image_tag` helper, all images will be lazy-loaded by default unless `lazy: false` is provided. If you are asynchronously adding content which contains lazy images then you need to call the function -`gl.lazyLoader.searchLazyImages()` which will search for lazy images and load them if needed. +`gl.lazyLoader.searchLazyImages()` which will search for lazy images and load them if needed. +But in general it should be handled automatically through a `MutationObserver` in the lazy loading function. ## Reducing Asset Footprint |