@tanshenghu/web-utils/lib/algorithm/index.js

web公共方法

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
/**
 * 商品规格穷举
 */

exports.default = {
  exhaustive: function exhaustive(datas, cb, debug) {
    var options = {
      datas: datas,
      callback: cb,
      debug: debug
    };
    if (!options.datas || options.datas.length === 0) {
      return false;
    }
    var loopIndex = 0;
    var forstr = 'for(let i_{{index}}=0;i_{{index}}<options.datas[{{index}}].length;i_{{index}}++){/** loop */}';
    var forQuery = '';
    var fnArgs = 'options.datas[0][i_0]';

    if (options.datas.length > 1) {
      for (var j = 1; j < options.datas.length; j++) {
        forQuery = (j === 1 ? forstr.replace(/\{\{index\}\}/mg, 0) : forQuery).replace('/** loop */', forstr).replace(/\{\{index\}\}/mg, j);
        fnArgs += ',options.datas[' + j + '][i_' + j + ']';
      }
    } else {
      forQuery = forstr.replace(/\{\{index\}\}/mg, 0);
    }

    forQuery = forQuery.replace('/** loop */', 'options.callback([' + fnArgs + '], loopIndex);loopIndex++;');

    eval(forQuery);

    return debug === true ? forQuery : void 0;
  }
};
module.exports = exports['default'];