var nameArr = [{name:'男'},{name:'女'}];
var numArr = [{num:'10万'},{num:'20万'},{num:'30万'}];
var yearArr = [{year:'1年'},{year:'2年'},{year:'3年'}];
var totalArr = [];
nameArr.forEach(function (item) {
numArr.forEach(function (numItem) {
yearArr.forEach(function (yearItem) {
totalArr.push([{name:item.name,num:numItem.num,year:yearItem.year}]);
});
});
});