strDate=Date.parse(strDate.replace(‘/-/g‘,‘/‘));
endDate=Date.parse(endDate.replace(‘/-/g‘,‘/‘));
var diffDate=(endDate-strDate)+1*24*60*60*1000;
var days=diffDate/(1*24*60*60*1000);
原文：https://www.cnblogs.com/java-cxh/p/13157711.html