[英]How to handle page numbers for an infinite scroll with Jquery / Ajax?
This is my first time trying to implement an infinite scroll with JQuery / Ajax. 这是我第一次尝试使用JQuery / Ajax实现无限滚动。 This is where I am currently:
这是我目前所在的位置:
<script>
$(document).ready(function() {
// see if we're at the bottom of the page to potentially load more content
$(window).on('scroll', scrollProducts);
function scrollProducts() {
var end = $("#footer").offset().top;
var viewEnd = $(window).scrollTop() + $(window).height();
var distance = end - viewEnd;
// when we're almost at the bottom
if (distance < 300) {
// unbind to prevent excessive firing
$(window).off('scroll', scrollProducts);
console.log('we reached the bottom');
$.ajax({
type: 'GET',
url: "foo/bar/2",
success: function(data) {
console.log("success!");
$('#container').append(data).fadeIn();
// rebind after successful update
$(window).on('scroll', scrollProducts);
}
});
}
}
});
</script>
I'd like to understand the correct way to update the page number in the url: foo/bar/2
. 我想了解更新url中的页码的正确方法:
foo/bar/2
。
I've read that due to the difference between synchronous and asynchronous calls you can't use a global variable but instead need a callback (although I'm failing to understand it). 我读过,由于同步和异步调用之间的差异,您不能使用全局变量,而需要回调(尽管我无法理解)。 I've also seen a solution where someone updated the values of hidden fields and then referenced those, although that seems like an ugly workaround.
我也看到了一个解决方案,其中有人更新了隐藏字段的值,然后引用了这些值,尽管这似乎是一个丑陋的解决方法。
What is the correct or recommended way to handle page numbers in this situation, so that the number increases with each request until there are no more pages? 在这种情况下,处理页码的正确或推荐方法是什么,以便该数目随每个请求而增加,直到没有更多页为止?
keep a counter and use it in you request 保留一个计数器并在您的请求中使用它
var page = 1;
$(document).ready(function() {
// see if we're at the bottom of the page to potentially load more content
$(window).on('scroll', scrollProducts);
function scrollProducts() {
var end = $("#footer").offset().top;
var viewEnd = $(window).scrollTop() + $(window).height();
var distance = end - viewEnd;
// when we're almost at the bottom
if (distance < 300) {
// unbind to prevent excessive firing
$(window).off('scroll', scrollProducts);
console.log('we reached the bottom');
$.ajax({
type: 'GET',
url: "foo/bar/" + page,
success: function(data) {
console.log("success!");
$('#container').append(data).fadeIn();
// rebind after successful update
$(window).on('scroll', scrollProducts);
page++;
}
});
}
}
});
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