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loadOnTransitionStart doesn't work

See original GitHub issue

const params = { pagination: { el: '.swiper-pagination', type: 'bullets', clickable: true, dynamicBullets: true }, slidesPerView: 1, loop: true, preloadImages: false, lazy: { enabled: true, loadOnTransitionStart: true } };

We need the image to start loading as soon as the swipe begins rather than waiting for the blur event. This property doesn’t seem to be working however! Still only lazy loads on blur.

Issue Analytics

  • State:closed
  • Created 6 years ago
  • Comments:9 (3 by maintainers)

github_iconTop GitHub Comments

kidjp85commented, Mar 10, 2018

Hi @joe-f , sorry for my late reply cause I am so busy recently. I found one solution for u.

params = {
    lazy: {
       loadPrevNext: true,
       loadPrevNextAmount: 1,  // number of slides u wanna preload on transition start
       loadOnTransitionStart: true
AndreasCagcommented, Apr 3, 2018

Actually, it doesn’t. @kidjp85 's solution just do this:

  • when you start transition to next slide, swiper loads content on left and right sides of this slide, instead of loading content on left and right sides only if transition is ended.

But issue question relates to another possibility: lazy load slide image only when user tries to swipe to this slide.

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