【先看效果】
(1)内容小于2页
不展示页码
(2)1 < 内容页数< 限定展示页码
展示:页码、上下页;隐藏:首页、末页图标,上、下一区间码。即:(页数:3;限定展示页码:5)
(3)内容页数 > 展示页码
展示:页码、上下页、首页、末页图标,上、下一区间码,去输入指定页
隐藏:无
【VUE代码 html部分】
<ul v-if="pages > 1" class="am-pagination" style="text-align: center;">
<li :class="pageIndex === 1 ? 'am-disabled':''" >
<a v-if="pages>showPageNum" href="#" @click.prevent="changeIndex(1)" style="display: inline;" title="首页">«</a>
<a href="#" @click.prevent="changeIndex(pageIndex-1)" style="display: inline;" title="上一页">‹</a>
<input title="上一区间码" class="movePageNum" :class="prePageNumClass" style="margin-left: -5px;" type="button" @click="prePageNum" value="…"/>
</li><!-- 上一页 -->
<li v-for="p in computePages"
:key="p"
@click.prevent="changeIndex(p)"
:class="pageIndex === p ? 'am-active':''">
<a href="#">{{p}}</a>
</li><!-- 第1、2…n…页(pageSize=6) -->
<li :class="pageIndex === pages ? 'am-disabled':''" >
<input title="下一区间码" class="movePageNum" :class="nextPageNumClass" style="margin-left: -5px;" type="button" @click="nextPageNum" value="…"/>
<a href="#" @click.prevent="changeIndex(pageIndex+1)" style="display: inline; margin-right: 5px;" title="下一页">›</a>
<a v-if="pages>showPageNum" href="#" @click.prevent="changeIndex(pages)" style="display: inline;" title="末页">»</a>
</li><!-- 下一页 -->
<li v-if="pages>showPageNum" style="display: inline;">
<span style="display: inline-block; border: 0; pointer-events: none; padding:0.5em 6px 0.5em 2px; " >去</span>
<input ref="inputGotoPage" class="inputGotoPage" type="number" max="99999" min="1" oninput="if(value.length>4) value=value.slice(0,5)" value="1" />
<span style="display: inline; border: 0; pointer-events: none; padding: 5px 0;">页</span>
<input title="点击跳转至相应页" class="movePageNum" type="button" @click="gotoPage" value="go"/>
</li>
</ul>
【VUE代码 JavaScript部分】
<script>
export default {
name: "NewsView",
data(){
return{
newsPageList:[], // 数据集
computePages:[],
prePageNumClass:'',
nextPageNumClass:'',
pageIndex: 1,
pageSize: 6, // 每页显示数量
offset: 0,
pages: 1,
total: 0,
showPageNum: 5, // 限制展示页码
beginPageNum: 0,
endPageNum: 0,
}
},
mounted() {
this.getNewList();
},
methods:{
// 获取数据集
getNewList(){
this.getRequest("/api/page/news", {typeKey:'n_2_1_list', sort:'order_num', order: 'desc', isEnabled: 0, hideContent:"", limit: this.pageSize, offset: this.offset}).then(resp =>{
if (resp && resp.code == 0 && resp.data != null){
this.explainData(resp.data);
}
});
},
// 数据集解析
explainData(respData){
this.newsPageList = respData.rows;
this.total = respData.total
this.pages = Math.ceil(this.total / this.pageSize)
// 首次加载,生成页码。后续加载,依据页码传参加载,依需 刷新页码
if(this.endPageNum==0) this.freshPageNum(1);
},
/* 【新闻分页】----begin------------<<<<<<<<<<<<<<<<<<<<<<<<<-------------------------- */
gotoPage(){
var gotoPageVal = this.$refs.inputGotoPage.value;
if(gotoPageVal){
var gotoPage = parseInt(gotoPageVal)
if(gotoPage<1){
gotoPage = 1;
this.$refs.inputGotoPage.value = 1;
}
if(gotoPage>this.pages) {
gotoPage = this.pages;
this.$refs.inputGotoPage.value = gotoPage;
}
if(gotoPage<this.beginPageNum || gotoPage>this.endPageNum) this.freshPageNum(gotoPage)
this.changeIndex(gotoPage);
}
},
prePageNum(){
this.endPageNum = this.beginPageNum;
this.beginPageNum = this.beginPageNum - this.showPageNum + 1
if(this.beginPageNum<1) {
this.beginPageNum = 1;
}
var changeIndex = (this.beginPageNum <= this.pageIndex && this.pageIndex <= this.endPageNum) ? this.pageIndex : this.endPageNum;
this.freshPageNum(this.beginPageNum);
this.changeIndex(changeIndex);
},
nextPageNum(){
this.beginPageNum = this.endPageNum;
this.endPageNum = this.endPageNum + this.showPageNum - 1
if(this.endPageNum>this.pages) {
this.beginPageNum = this.pages - this.showPageNum + 1;
}
var changeIndex = (this.beginPageNum <= this.pageIndex && this.pageIndex <= this.endPageNum)?this.pageIndex : this.beginPageNum;
this.freshPageNum(this.beginPageNum);
this.changeIndex(changeIndex);
},
// 页码总是最多展示 this.showPageNum 个
// 三目运算,多语句,返回值为最后的语句结果
// condition ? (statement1, statement2, statement3) : (statement4, statement5);
// true 返回值 statement3; false 返回值 statement5
freshPageNum(start) {
// 计算 起止页码
var startMax = this.pages - this.showPageNum + 1; // 起始页码 的最大值
start = start>startMax?startMax:start;
start<=1?(this.prePageNumClass = 'hiddenChangePage', this.beginPageNum = start = 1):(this.prePageNumClass = 'showChangePage')
var end = start + this.showPageNum - 1; // 根据 起始页码 计算 终止页码
end = end > this.pages ? this.pages : end;
end==this.pages ? (this.nextPageNumClass = 'hiddenChangePage'):(this.nextPageNumClass = 'showChangePage');
this.beginPageNum = start;
this.endPageNum = end;
// 生成页码
var arr = [];
for (var i = start; i <= end; i++) {
arr.push(i);
}
this.computePages = arr;
},
changeIndex(p){
if(this.pageIndex != p) {// 只有切换页码,才请求数据。减少重复请求。
this.pageIndex = p;
this.offset = (this.pageIndex-1) * this.pageSize;
this.getNewList();
}
if(p>this.endPageNum) return this.freshPageNum(p);
if(p<this.beginPageNum) return this.freshPageNum(p-this.showPageNum + 1);
if(p==1 || p==this.pages) this.freshPageNum(p); // 首、末的页
},
/* 【新闻分页】------end------------->>>>>>>>>>>>>>>---------------------- */
},
}
</script>
【VUE代码 css部分】
<style scoped>
.hiddenChangePage{
display: none !important;
}
.showChangePage{
display: inline !important;
}
</style>