Javascript Js分页页面链接不起作用
我正试图实现一个简单的分页项目,但我遇到了一个搜索栏问题 以下是我迄今为止所取得的成就: 每页显示10个条目 我的脚本可以根据EntriessStudent的总数计算页面链接的总数 我可以访问每一页,看到它的条目,比如说,第1页:从0到9的学生。。。第三页:30到39岁的学生等 搜索功能 我故意关闭了按按钮搜索。它仅在“keyup”事件侦听器中可用。 到目前为止我未能实施的内容: 键入搜索查询“/15”时,将显示两页,其中包含相应的条目。 但如果我点击第2页的链接,它会显示每页超过10条默认参数,返回到第1页,同样的错误也会发生。 我怀疑页面链接从其他地方得到了错误的值。 我试着调试,似乎他们从$StudentList整个学生列表中获得了值,但不是从我传递到那里的搜索结果中获得的值 我总共有3个函数Javascript Js分页页面链接不起作用,javascript,jquery,web,pagination,Javascript,Jquery,Web,Pagination,我正试图实现一个简单的分页项目,但我遇到了一个搜索栏问题 以下是我迄今为止所取得的成就: 每页显示10个条目 我的脚本可以根据EntriessStudent的总数计算页面链接的总数 我可以访问每一页,看到它的条目,比如说,第1页:从0到9的学生。。。第三页:30到39岁的学生等 搜索功能 我故意关闭了按按钮搜索。它仅在“keyup”事件侦听器中可用。 到目前为止我未能实施的内容: 键入搜索查询“/15”时,将显示两页,其中包含相应的条目。 但如果我点击第2页的链接,它会显示每页超过10条默认参数
function showPage(studentList, pageNum = 1){
const showPerPage = 10;
$(studentList).hide();
const calcStart = (pageNum) => pageNum === 1 ? 0 : (pageNum - 1) * showPerPage;
const start = calcStart(pageNum);
const end = pageNum * showPerPage;
$(studentList).slice(start,end).each(function(i, li){
$(li).fadeIn(50);
});
}
function appendPageLinks(studentList){
totalPageNum = Math.ceil(studentList.length / 10);
const pagination = 'pagination';
if($('.pagination').length === 0){
$('.page').append(`
<div class="${pagination}">
<ul></ul>
</div>
`);
}
$('.pagination ul').children().remove();
if (totalPageNum > 1){
for(let i=0; i<totalPageNum; i++){
const pageLink = `
<li>
<a href="#">${i + 1}</a>
</li>
`;
$('.pagination ul').append(pageLink);
}
}
$('.pagination ul li').children().first().addClass('active');
$('.pagination ul').on('click', 'a', function(e){
e.preventDefault();
const pgNum = parseInt($(e.target).text());
showPage(studentList, pgNum);
$(this).parent().siblings().children().removeClass('active');
$(this).addClass('active');
});
}
function searchStudent(element, filter){
$(element).each(function(){
if($(this).text().toUpperCase().includes(filter)){
$(this).show();
} else {
$(this).hide();
}
});
let num = $('.student-item:not([style*="display: none"])').length;
let searchRes = $('.student-item:not([style*="display: none"])');
num > 0 ? $('.notFound').hide() : $('.notFound').show();
return searchRes;
}
})
和上面这个一样
$('.pagination ul').on('click', 'a', function(e)
下面是codepen的源代码:
如果有人可以建议如何修复页面链接以正确更新
$('.pagination ul').on('click', 'a', function(e){
e.preventDefault();
const pgNum = parseInt($(e.target).text());
showPage(studentList, pgNum);
$(this).parent().siblings().children().removeClass('active');
$(this).addClass('active');
});
上述函数showPageStudentList,pgNum;存在问题;。单击分页链接时,整个学生数组将作为studentList传递。相反,您可能希望只发送搜索查询为您提供新studentArray后得到的结果
下面是我对js做了一些修改,可能会得到你想要的结果
// Setting up variables
const $studentList = $('.student-list').children();
var $changedStudentList = $studentList;
$('.student-list').prepend('<div class="notFound"></div>');
$('.notFound').html(`<span>No results</span>`);
$('.notFound').hide();
// Bulding a list of ten students and displaying them on the page
function showPage(studentList, pageNum = 1){
const showPerPage = 10;
// hide all students on the page
$(studentList).hide();
// Get start/end for each student based on the page number
const calcStart = (pageNum) => pageNum === 1 ? 0 : (pageNum - 1) * showPerPage;
const start = calcStart(pageNum);
const end = pageNum * showPerPage;
// Looping through all students in studentList
$(studentList).slice(start,end).each(function(i, li){
// if student should be on this page number
// show the student
$(li).fadeIn(50);
});
}
// Search component
const searchBar = `
<div class="student-search">
<input placeholder="Search for students...">
<button>Search</button>
</div>
`;
$('.page-header').append(searchBar);
$('.student-search input').on('keyup', function(){
const searchQuery = $(this).val();
const searchResults = searchStudent($('.student-list li'), searchQuery.toUpperCase());
$changedStudentList = searchResults;
showPage(searchResults);
appendPageLinks(searchResults);
});
// Student search
function searchStudent(element, filter){
$(element).each(function(){
if($(this).text().toUpperCase().includes(filter)){
$(this).show();
} else {
$(this).hide();
}
});
let num = $('.student-item:not([style*="display: none"])').length;
let searchRes = $('.student-item:not([style*="display: none"])');
num > 0 ? $('.notFound').hide() : $('.notFound').show();
return searchRes;
};
// Creating all page links based on a list of students
function appendPageLinks(studentList){
// determine how many pages for this student list
totalPageNum = Math.ceil(studentList.length / 10);
// create a page link section
const pagination = 'pagination';
// add a page link to the page link section
// if class the element already exists
if($('.pagination').length === 0){
$('.page').append(`
<div class="${pagination}">
<ul></ul>
</div>
`);
}
// remove the old page link section from the site
$('.pagination ul').children().remove();
if (totalPageNum > 1){
// 'for' every page
for(let i=0; i<totalPageNum; i++){
const pageLink = `
<li>
<a href="#">${i + 1}</a>
</li>
`;
// append our new page link section to the site
$('.pagination ul').append(pageLink);
}
}
$('.pagination ul li').children().first().addClass('active');
// define what happens when you click a link (event listener)
$('.pagination ul').on('click', 'a', function(e){
e.preventDefault();
const pgNum = parseInt($(e.target).text());
// Use showPage() to display the page for the link clicked
showPage($changedStudentList, pgNum);
// mark that link as 'active'
$(this).parent().siblings().children().removeClass('active');
$(this).addClass('active');
});
}
showPage($studentList);
appendPageLinks($studentList);
谢谢,现在一切正常。我一直在绞尽脑汁想如何获得这样的价值,并考虑重组所有资产。很高兴它起到了作用!!干杯
// Setting up variables
const $studentList = $('.student-list').children();
var $changedStudentList = $studentList;
$('.student-list').prepend('<div class="notFound"></div>');
$('.notFound').html(`<span>No results</span>`);
$('.notFound').hide();
// Bulding a list of ten students and displaying them on the page
function showPage(studentList, pageNum = 1){
const showPerPage = 10;
// hide all students on the page
$(studentList).hide();
// Get start/end for each student based on the page number
const calcStart = (pageNum) => pageNum === 1 ? 0 : (pageNum - 1) * showPerPage;
const start = calcStart(pageNum);
const end = pageNum * showPerPage;
// Looping through all students in studentList
$(studentList).slice(start,end).each(function(i, li){
// if student should be on this page number
// show the student
$(li).fadeIn(50);
});
}
// Search component
const searchBar = `
<div class="student-search">
<input placeholder="Search for students...">
<button>Search</button>
</div>
`;
$('.page-header').append(searchBar);
$('.student-search input').on('keyup', function(){
const searchQuery = $(this).val();
const searchResults = searchStudent($('.student-list li'), searchQuery.toUpperCase());
$changedStudentList = searchResults;
showPage(searchResults);
appendPageLinks(searchResults);
});
// Student search
function searchStudent(element, filter){
$(element).each(function(){
if($(this).text().toUpperCase().includes(filter)){
$(this).show();
} else {
$(this).hide();
}
});
let num = $('.student-item:not([style*="display: none"])').length;
let searchRes = $('.student-item:not([style*="display: none"])');
num > 0 ? $('.notFound').hide() : $('.notFound').show();
return searchRes;
};
// Creating all page links based on a list of students
function appendPageLinks(studentList){
// determine how many pages for this student list
totalPageNum = Math.ceil(studentList.length / 10);
// create a page link section
const pagination = 'pagination';
// add a page link to the page link section
// if class the element already exists
if($('.pagination').length === 0){
$('.page').append(`
<div class="${pagination}">
<ul></ul>
</div>
`);
}
// remove the old page link section from the site
$('.pagination ul').children().remove();
if (totalPageNum > 1){
// 'for' every page
for(let i=0; i<totalPageNum; i++){
const pageLink = `
<li>
<a href="#">${i + 1}</a>
</li>
`;
// append our new page link section to the site
$('.pagination ul').append(pageLink);
}
}
$('.pagination ul li').children().first().addClass('active');
// define what happens when you click a link (event listener)
$('.pagination ul').on('click', 'a', function(e){
e.preventDefault();
const pgNum = parseInt($(e.target).text());
// Use showPage() to display the page for the link clicked
showPage($changedStudentList, pgNum);
// mark that link as 'active'
$(this).parent().siblings().children().removeClass('active');
$(this).addClass('active');
});
}
showPage($studentList);
appendPageLinks($studentList);