zent/es/pagination/layout/getPageRange.js

一套前端设计语言和基于React的实现

export function getPageRange(options) {
    var pageSize = options.pageSize, total = options.total, current = options.current, startDelta = options.startDelta, endDelta = options.endDelta;
    var totalPages = Math.ceil(total / pageSize);
    var start = 1 + (startDelta || 0);
    var end = totalPages + (endDelta || 0);
    var min = Math.max(start, current - 2);
    var max = Math.min(current + 2, end);
    var len = max - min + 1;
    if (len < 5) {
        var delta = 5 - len;
        if (min > start) {
            min = Math.max(start, min - delta);
        }
        if (max < end) {
            max = Math.min(max + delta, end);
        }
    }
    return {
        min: min,
        max: max,
    };
}