barretlee / lazyload Goto Github PK
View Code? Open in Web Editor NEWLazyload images or lazy execute scripts. (图片脚本懒加载)
Home Page: https://barretlee.github.io/lazyload/demo/index.html
License: MIT License
Lazyload images or lazy execute scripts. (图片脚本懒加载)
Home Page: https://barretlee.github.io/lazyload/demo/index.html
License: MIT License
觉得你想要的distance 效果是还没进入屏幕的元素在一个距离范围内,就提前开始加载。
看代码,只是做了个区域偏移。比如我设个distance = 12000,当前屏幕的元素都不会执行加载。
比如我设个500,那屏幕上边500px内的元素就不会进行加载,即使进入了可视区。
Lazyload.prototype._detectElementIfInScreen = function () {
// pause 可以提前判断,可以减少一些不需要执行的代码被执行
if (!this.elements.length || !this._pause) return;
你好,胡子哥。我在看你的$()
函数,发现你使用了一句sheet.addRule(query, "a:b")
,然后获取到document.all
后判断当前的元素是否有a
属性,再将有a属性的添加到结果数组中,我想请问下,这样做的原理是什么呢?
如果可以的话,请稍加点拨下,谢谢啦。
目前是容器进入区域,就一股脑的把里面的图片全去加载了。
比如手机上,无限加载的列表页,每次ajax得到16~32个图片地址,插入进ul列表,所有图片会同时去加载,没得到想要的效果。
api应该是传入图片的容器,但是应该判断容器里的每个图片是否进入可视区。
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