daily-report.js

[].map.call(document.getElementsByTagName("table"),table => {
  try {
    let task = table.children[0].children[0].children[0].textContent
    if ("task" == task) {
      return [].map.call(table.children[1].children, record => {
        let spend = record.children[2]
        let text = spend.childNodes[0]
        
        let times = text.nodeValue
        if (times && /\d+:\d+(:\d+)?(\s*\+\s*\d+:\d+(:\d+)?)*/.test(times)) {
          spend.innerText = [
            times.split(/\s*\+\s*/).map(
              (v) => [
                v.split(":")
              ].reduce((_,[h,m=0,s=0]) => h*60**2+m*60+s, 0)
            )
            .reduce((acc,v)=>acc+v, 0)
          ].reduce((_,v) => Math.floor(v/60**2) + ":" + ("0"+v%60**2/60).slice(-2) + ":" + ("0"+(v%60**2)%60).slice(-2), 0)
        }
      })
    }
  } catch (e) {}
})