Google表格脚本可为特定单元格添加时间

Question

i need help with a script that will add a time value to a specific cell that contains a time value. For example, Cell A1 contains a time value like 09:30. Then when the script runs, it will add 30 minutes to the time in A1 resulting it to be 10:00.

Appreciate the help.

Edit: Below is my current code

function modifyCell(cellName, increase) {
  var range = SpreadsheetApp.getActiveSheet().getRange(cellName)
  var AddTime = -30;
  if (increase) {
    AddTime = 30;
  }
  range.setValue(range.getValue() + AddTime);
}

function increaseLine2() {
  modifyCell("C5", true);
}

function decreaseLine2() {
  modifyCell("C5", false);
}

Answer 1

A Digital Clock for dummies

Here's a digital clock that starts with correct time from the Date() function. But when it's updated it just get 60 seconds added to it by taking the previous datetime value and adding 60*1000 milliseconds to it and formatting the date with the new value rather than using the available actual value. So it only changes once every minute. It also creates and manages a one minute timer for you.

function digitalClockMenu(){
  SpreadsheetApp.getUi().createMenu('Clock Tools')
     .addItem('Start Clock', 'startDigitalClock')
     .addItem('Stop Clock', 'stopDigitalClock')
     .addToUi();
}

function startDigitalClock() {
  if(!isTrigger('addMinute')){
    ScriptApp.newTrigger('addMinute').timeBased().everyMinutes(1).create();
  }
  SpreadsheetApp.getActive().getSheetByName('ClockSheet').getRange('A2').clearFormat().setValue('');
  SpreadsheetApp.getActive().getSheetByName('ClockSheet').getRange('A1').setValue('Starting');
}

function initialTime(){
  var ss=SpreadsheetApp.getActive();
  var sh=ss.getSheetByName('ClockSheet');
  sh.getRange('A2').setValue(Utilities.formatDate(new Date(), Session.getScriptTimeZone(), "HH:mm:ss"));
  sh.getRange('A1').setValue('Running');
}

function addMinute(){
  var ss=SpreadsheetApp.getActive();
  var sh=ss.getSheetByName('ClockSheet');
  var v=sh.getRange('A2').getValue();
  if(v){
    var old=new Date(v).valueOf();
    var minute=60*1000;
    sh.getRange('A2').setValue(Utilities.formatString(Utilities.formatDate(new Date(old + minute), Session.getScriptTimeZone(), "HH:mm:ss")));
  }else{
    initialTime();
  }
}

function stopDigitalClock(){
  deleteTrigger('addMinute');
  SpreadsheetApp.getActive().getSheetByName('ClockSheet').getRange('A1').setValue('Stopped');
}  


function isTrigger(funcName)
{
  var r=false;
  if(funcName)
  {
    var allTriggers=ScriptApp.getProjectTriggers();
    var allHandlers=[];
    for(var i=0;i<allTriggers.length;i++)
    {
      allHandlers.push(allTriggers[i].getHandlerFunction());
    }
    if(allHandlers.indexOf(funcName)>-1)
    {
      r=true;
    }
  }
  return r;
}

function deleteTrigger(funcName)
{
  var triggers=ScriptApp.getProjectTriggers();
  for(var i=0;i<triggers.length;i++)
  {
    if(funcName==triggers[i].getHandlerFunction())
    {
      ScriptApp.deleteTrigger(triggers[i]);
      break;
    }
  }

}

It does what you requested plus a little bit more.