Nodejs String to Date Convert toDate(pattern = 'YYYY-MM-DD')

Method Source Code

String.prototype.toDate = function (pattern = 'YYYY-MM-DD') {
    let date = new Date()/*from  w  w  w . j a v a 2 s . c o m*/
    if (pattern.indexOf("YYYY") > -1) {
        const yearIndex = pattern.indexOf("YYYY")
        date.setFullYear(this.substring(yearIndex,yearIndex+4))
    }
    if(pattern.indexOf("MM")>-1){
        const monthIndex = pattern.indexOf("MM")
        date.setMonth(this.substring(monthIndex,monthIndex+2)-1)
    }
    if(pattern.indexOf("DD")>-1){
        const dayIndex = pattern.indexOf("DD")
        date.setDate(this.substring(dayIndex,dayIndex+2))
    }
    if(pattern.indexOf("HH")>-1){
        const hourIndex = pattern.indexOf("HH")
        console.log('hehe')
        date.setHours(this.substring(hourIndex,hourIndex+2))
    }
    if(pattern.indexOf("mm")>-1){
        const minutesIndex = pattern.indexOf("mm")
        date.setMinutes(this.substring(minutesIndex,minutesIndex+2))
    }
    if(pattern.indexOf("SS")>-1){
        const secondsIndex = pattern.indexOf("SS")
        date.setSeconds(this.substring(secondsIndex,secondsIndex+2))
    }
    return date
}

Related

1. toDate()

   String.prototype.toDate = function() {
       return new Date(this.slice(0,15));
   };
   

2. toDate()

   String.prototype.toDate = function()
     var date, parts, year, month, day, hours, minutes, seconds, ms;
     if (parts = this.match(/^([0-9]{4})\-([0-9]{2})\-([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(\.([0-9]{1,3}))?(Z|([-+0-9:]{6}))$/))
       date = Date.parse(this);
       if (isNaN(date)) 
         year    = parts[1];
   ...
   

3. toDate()

   String.prototype.toDate = () =>{
       var from = $(this).val().split("/");
       var f = new Date(from[2], from[1] - 1, from[0]);
       return f;
   

4. toDate(dateIsOmittable, monthIsOmittable)

   String.THROW_WHEN_INVALID_DATE = true
   String.prototype.toDate = function(dateIsOmittable, monthIsOmittable) {
       var date = null;
       var str = "0000-00-00";
       if (/^\d{4}-\d{2}-\d{2}$/.test(this))
           str = new String(this);
       else if (dateIsOmittable && /^\d{4}-\d{2}$/.test(this))
           str = this + "-01";
       else if (dateIsOmittable && monthIsOmittable && /^\d{4}$/.test(this))
   ...
   

5. toDate(str)

   String.prototype.toDate = function(str) {
       var m = this.match(/(\d+)-(\d+)-(\d+)\s+(\d+):(\d+):(\d+)/);
       return new Date(+m[1], +m[2] - 1, +m[3], +m[4], +m[5], +m[6]);
   

6. toDateFormat(format)

   String.prototype.toDateFormat = function (format) {
       return this.parseToDate().toDateFormat(format);
   };
   

7. toDateFromAspNet()

   if (!window.console) {
       console = {
           log: function (msg) {
       };
   };
   String.prototype.toDateFromAspNet = function () {
       var dte = eval("new " + this.replace(/\
       dte.setMinutes(dte.getMinutes() - dte.getTimezoneOffset());
   ...
   

8. toDateFromAspNet()

   String.prototype.toDateFromAspNet = function () {
       var dte = eval("new " + this.replace(/\
       dte.setMinutes(dte.getMinutes() - dte.getTimezoneOffset());
       return dte;
   };