Use JS to convert a string into a date and compare the two sizes

This article mainly introduces the JS method of converting string to date and comparing the size. It analyzes the skills of JavaScript string and date operation in detail in the form of examples. It has It must be of reference value. Friends in need can refer to

. This article analyzes the JS method of converting strings to dates and comparing sizes. Share it with everyone for your reference, the details are as follows:

Method 1:

function compareDate(DateOne, DateTwo) {
  var OneMonth = DateOne.substring(5, DateOne.lastIndexOf("-"));
  var OneDay = DateOne.substring(DateOne.length, DateOne.lastIndexOf("-") + 1);
  var OneYear = DateOne.substring(0, DateOne.indexOf("-"));
  var TwoMonth = DateTwo.substring(5, DateTwo.lastIndexOf("-"));
  var TwoDay = DateTwo.substring(DateTwo.length, DateTwo.lastIndexOf("-") + 1);
  var TwoYear = DateTwo.substring(0, DateTwo.indexOf("-"));
  if (Date.parse(OneMonth + "/" + OneDay + "/" + OneYear) > Date.parse(TwoMonth + "/" + TwoDay + "/" + TwoYear)) {
    return true;
  } else {
    return false;
  }
}

Example:

The code is as follows:

alert(compareDate(''2004-12-01'',''2004-05-02'''));

Currently only supported In the format of year-month-day

Method 2:

var checkStartDate = document.form1.checkStartDate.value; 
var checkEndDate = document.form1.checkEndDate.value; 
var arys= new Array(); 
var startdate=new Date(arys[0],parseInt(arys[1]-1),arys[2]); 
if(checkStartDate != null && checkEndDate != null) { 
  arys=checkStartDate.split('-'); 
  var startdate=new Date(arys[0],parseInt(arys[1]-1),arys[2]); 
  arys=checkEndDate.split('-'); 
  var checkEndDate=new Date(arys[0],parseInt(arys[1]-1),arys[2]);  
  if(startdate > checkEndDate) { 
    alert("你的检查日期开始时间大于结束时间啦"); 
    return; 
  }
}

The above is the detailed content of Use JS to convert a string into a date and compare the two sizes. For more information, please follow other related articles on the PHP Chinese website!