• 写了个pager, 可供参考


    
    
    /*
    Author: Calos
    Description: patv2 pager
    !import: this pager goes with the time, we just temporarily stay, what a sad fact!
    */
    (function ($) {
        $.fn.patpager = function (options) {
            options = options || {
                turnPageTriggered: function (indexer) {
                    indexer = indexer || { pageIndex: 1, pageSize: 10 };
                }, pageIndex: 1, pageSize: 10, pageCount: 10
            };
            var pagerStatus = { pageIndex: options.pageIndex || 1, pageSize: options.pageSize || 10 };
            var $this = $(this);
            $this.children().remove();
            var timestamp = new Date().getTime();
            var caching = {};
            var fetchIndexer = function (indexerTo, transform) {
                if (options.turnPageTriggered) {
                    transform();
                    options.turnPageTriggered(indexerTo);
                }
            }
            var components = {
                Turntopage: '<label>Turn to page</label>',
                pageIndex: function (num) { return '<input type="text" class="pageTo" value=' + num + '>'; },
                previousPage: '<a class="prev"><<</a>',
                curStatus: function (pageIndex, totalPages) { return 'page <span class="cur">' + pageIndex + '</span> of <span class="totalPages">' + totalPages + '</span>'; },
                nextPage: '<a class="next">>></a>'
            };
            var methods = {
                createPager: function (pageIndex, totalPage) {
                    var html = '<div class=' + timestamp + ' >' + components.Turntopage + components.pageIndex(pageIndex) + components.previousPage + components.curStatus(pageIndex, totalPage) + components.nextPage + '</div>';
                    $this.html(html);
                },
                refreshCache: function () {
                    caching = {
                        pageTo: $this.find('.pageTo'),
                        prev: $this.find('.prev'),
                        pageIndex: $this.find('.cur'),
                        totalPages: $this.find('.totalPages'),
                        next: $this.find('.next')
                    }
                    $(".prev,.next").css('cursor', 'pointer');
                },
                initPager: function (option) {
                    methods.createPager(option.pageIndex, option.pageSize);
                    this.refreshCache();
                },
                pageIndexChanged: function (pager, sendInitTableRequest) {
                    pager = pager || { pageTo: 1, pageSize: 10 };
                    var totalPage = sendInitTableRequest(pager);
                    caching.pageIndex.text(pager.pageTo);
                },
                setCurrentPage: function (pageTo) { caching.pageIndex.text(pageTo >= 1 ? pageTo : 1) },
                getCurrentPage: function () { return parseInt(caching.pageIndex.text()); },
                ensureFirstPage: function () {
                    return this.getCurrentPage() === 1;
                },
                ensureLastPage: function () {
                    return this.getCurrentPage() === options.pageCount;
                },
                turnToPreviousPage: function () {
                    pagerStatus.pageIndex = methods.getCurrentPage() - 1;
                    fetchIndexer(pagerStatus, function () {
                        methods.setCurrentPage(pagerStatus.pageIndex);
                    });
                },
                turnToNextpage: function () {
                    pagerStatus.pageIndex = methods.getCurrentPage() + 1;
                    fetchIndexer(pagerStatus, function () {
                        methods.setCurrentPage(pagerStatus.pageIndex);
                    });
                },
                turnTopage: function (index) {
                    pagerStatus.pageIndex = index;
                    fetchIndexer(pagerStatus, function () {
                        methods.setCurrentPage(pagerStatus.pageIndex);
                    });
                },
                ensureValidPageIndex: function () {
                    var i = caching.pageTo.val();
                    var c = parseInt(caching.totalPages.text());
                    if (i <= 0) { caching.pageTo.val(1); caching.pageIndex.text(1); return true; }
                    if (i >= c) { caching.pageTo.val(c); caching.pageIndex.text(c); return true; }
                    return /d/gim.test(i) && i > 0 && i < parseInt(caching.totalPages.text());
                }
            };
            var behaviors = {
                prevClick: function () {
                    methods.turnToPreviousPage();
                },
                nextClick: function () {
                    methods.turnToNextpage();
                },
                curChange: function () {
                }
            };
    
            var getFrame = function (selector) {
                return '.' + timestamp + ' ' + selector;
            }
    
            $this.on('click', getFrame('.prev'), function (e) {
                if (!methods.ensureFirstPage())
                    behaviors.prevClick();
            });
            $this.on('click', getFrame('.next'), function (e) {
                if (!methods.ensureLastPage())
                    behaviors.nextClick();
            });
            $this.on('keydown blur', '.pageTo', function (e) {
                var eType = $.inArray(e.type, ['focusout', 'keydown']);
                if ((eType === 1 && e.keyCode === 13) || eType === 0) {
                    if (methods.ensureValidPageIndex()) {
                        var index = caching.pageTo.val();
                        methods.turnTopage(index);
                    }
                }
            });
    
            methods.initPager(options);
            return this;
        }
    })(jQuery);
    
    
    
    
    
     效果:

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  • 原文地址:https://www.cnblogs.com/hualiu0/p/5359541.html
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