js分页器详解

依赖于:bootstrap 和 jquery

html代码:通过class="pj_pager"引用,pj_total初始化总条数

<p class="btn-group pj_pager" pj_total="10001"></p>

js代码:

/** * 分页器,依赖于bootstrap,jquery */ var pager = { init : function(r) { this.obj = $(".pj_pager"); this.total = Number(this.obj.attr("pj_total")); this.rows = r != undefined ? r : 10;// Number(this.obj.find(.page-count).html()) this.page = 1; this.initpagecount = 10; this.pages = parseInt(this.total / pager.rows) + (pager.total % pager.rows > 0 ? 1 : 0); this.maxpages = this.pages > this.initpagecount ? this.initpagecount : this.pages; this.outnumber = this.pages > this.initpagecount ? true : false; this.start = 1; this.end = this.start + (this.maxpages - 1); this.html(); }, next : function() { this.obj.find(".pj_next").click(function() { if (pager.pages > pager.page) { pager.page++; pager.html(); } }); }, prov : function() { this.obj.find(".pj_prov").click(function() { if (pager.page > 1) { pager.page--; pager.html(); } }); }, first : function() { this.obj.find(".first").click(function() { if (pager.page != 1) { pager.page = 1; pager.html(); } }); }, last : function() { this.obj.find(".last").click(function() { if (pager.page != pager.pages) { pager.page = pager.pages; pager.html(); } }); }, jump : function() { this.obj.find(".jump").click(function() { var p = $(this).prev("input").val(); if (p != '' && Number(p) <= pager.pages) { pager.page = Number(p); pager.html(); } }); }, setOutnumber : function() { if (this.pages > this.initpagecount) { if (this.end < this.page || this.start > this.page) { this.start = parseInt((this.page - 1) / this.initpagecount) * this.initpagecount + 1; this.end = this.start + this.initpagecount - 1; if (this.pages - this.start < this.initpagecount) { this.outnumber = false; this.end = this.start + pager.total % pager.rows - 1; } else { this.outnumber = true; } } } }, selectRows : function() { $(".dropdown-menu li").click( function() { // pager.rows = Number($(this).find("a").html()); // pager.page = 1; pager.init(Number($(this).find("a").html())); $(this).parent("ul").prev("button").children("em").html( $(this).find("a").html()); }); }, html : function() { this.setOutnumber(); var html = ''; html += '<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown"><em class="page-count">' + this.rows + '</em> <span class="caret"></span></button>'; html += '<ul class="dropdown-menu" style="min-width: auto" role="menu">'; html += '<li><a href="#">10</a></li><li><a href="#">20</a></li><li><a href="#">30</a></li><li><a href="#">40</a></li><li><a href="#">50</a></li><li><a href="#">100</a></li>'; html += '</ul>'; html += '<button type="button" class="btn btn-default first">首页</button>'; html += '<button type="button" class="btn btn-default pj_prov"><<</button>'; if (this.pages > 0) { for (var i = this.start; i <= this.end; i++) { var cls = (i == this.page ? 'btn-success' : 'btn-default'); html += '<button type="button" class="btn ' + cls + '">' + i + '</button>'; } if (this.outnumber) { html += '<button type="button" class="btn btn-default">...</button>'; } } html += '<button type="button" class="btn btn-default pj_next">>></button>'; html += '<button type="button" class="btn btn-default last">尾页</button>'; html += '<input type="text" style="width: 50px;display:inherit" class="btn form-control" placeholder="页数">'; html += '<button type="button" class="btn btn-default jump">跳转</button>'; html += '<span> </span><span>' + this.total + '</span><span>条</span>'; html += '<span> 共</span><span>' + this.pages + '</span><span>页</span>'; this.obj.html(html); this.next(); this.prov(); this.first(); this.last(); this.jump(); this.selectRows(); } } $(function() { pager.init(); })

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