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Vue 分页组件

发布时间:2018-07-23编辑:windydeng浏览(451)评论览(0)

    <!-- 模板 -->
    <script type="text/template" id="template_pagination">
        <nav>
            <ul class="pagination">
                <li :class="{'disabled': current == 1}">
                <a href="javascript:;" @click="setCurrent(1)"> 首页 </a></li>
                <li :class="{'disabled': current == 1}">
                <a href="javascript:;"@click="setCurrent(current - 1)"> 上一页 </a>
                </li> 
                <li v-for="p in grouplist" :class="{'active': current == p.val}">
                <a href="javascript:;" @click="setCurrent(p.val)"> {{ p.text }} </a></li>
                <li :class="{'disabled': current == page}">
                <a href="javascript:;" @click="setCurrent(current + 1)"> 下一页</a>
                </li>
                <li :class="{'disabled': current == page}">
                <a href="javascript:;" @click="setCurrent(page)"> 尾页 </a></li>
            </ul>
            <ul class="pagination pull-right">
                <li><span> 共 {{ total }}  条数据 </span></li>            
                <li><span> 每页显示 {{ display }}  条数据 </span></li>
                <li><span> 共 {{ page }} 页 </span></li>
                <li><span> 当前第 {{ current }} 页 </span></li>
            </ul>
        </nav>
    </script>


    /**
     * [pagination 分页组件]
     * @param  {Number} total         [数据总条数]
     * @param  {Number} display     [每页显示条数 default:10]
     * @param  {Number} current     [当前页码 default:1]
     * @param  {Number} pagegroup     [分页条数(奇数) default:5]
     * @param  {Event} pagechange     [页码改动时 dispatch ]
     * @return {[type]}   [description]
     */
    Vue.component('pagination', {
        template: '#template_pagination',
        props: {
            total: {            // 数据总条数
                type: Number,
                default: 0
            },
            display: {            // 每页显示条数
                type: Number,
                default: 10
            },
            current: {            // 当前页码
                type: Number,
                default: 1
            },
            pagegroup: {        // 分页条数 -- 奇数
                type: Number,
                default: 5,
                coerce:function(v){
                    v = v > 0 ? v : 5;
                    return v % 2 === 1 ? v : v + 1;
                }
            }
        },
        computed: {
            page:function() { // 总页数
                return Math.ceil(this.total / this.display);
            },
            grouplist:function(){ // 获取分页页码
                var len = this.page , temp = [], list = [], count = Math.floor(this.pagegroup / 2) ,center = this.current;
                if( len <= this.pagegroup ){
                    while(len--){ temp.push({text:this.page-len,val:this.page-len});};
                    return temp;
                }
                while(len--){ temp.push(this.page - len);};
                var idx = temp.indexOf(center);                
                (idx < count) && ( center = center + count - idx); 
                (this.current > this.page - count) && ( center = this.page - count);
                temp = temp.splice(center - count -1, this.pagegroup);                
                do {
                    var t = temp.shift();
                    list.push({
                        text: t,
                        val: t
                    });
                }while(temp.length);                
                if( this.page > this.pagegroup ){
                    (this.current > count + 1) && list.unshift({ text:'...',val: list[0].val - 1 });
                    (this.current < this.page - count) && list.push({ text:'...',val: list[list.length - 1].val + 1 });
                }
                return list;
            }
        },
        methods: {
            setCurrent: function(idx) {
                if( this.current != idx && idx > 0 && idx < this.page + 1) {
                    this.current = idx;
                    this.$dispatch('pagechange',this.current);                    
                }                
            }
        }
    });
    <div id="app">
        <div class="container">
            <h1>  Vue 分页组件 </h1>
            <pagination :total="total" :current.sync="current"></pagination>
            <pre>{{ $data|json }}</pre>
        </div>
    </div>
     
    <script>
    var app = new Vue({
        el: '#app',
        data: {
            total: 81,     // 记录总条数
            display: 10,   // 每页显示条数
            current: 1     // 当前第n页 , 也可以 watch current 的变化 
        },
        events:{
            pagechange:function(p){     // 页码改变event , p 为新的 current
                console.log('pagechange',p);
            }
        }
    });
    </script>


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