对象数组 - 拼接所有对象的最高值。 Javascript

Question

Can you help me with this logical issue?

I have an array that has Object tasks inside, each task has a number of days to complete.

I have a function that .shift() the first item from an array, however, I need it to take out the task Object that's 'time' value is highest.

const assignableTasks = [
      {
        title: 'Design Framework',
        time: '5',
        sequential: 0,
        seqData: '',
      },
      {
        title: 'Design UI',
        time: '3',
        sequential: 0,
        seqData: '',
      },
      {
        title: 'Design Software',
        time: '10',
        sequential: 1,
        seqData: 'Design Framework',
      },
    ],

That is the design of the Array.

This is my function to take a task from the list and return it:

const fetchNewTask = () => {
    return assignableTasks.shift();
  };

With the above data in Tasks, it should take Design Software, then Design Framework, then Design UI.

Thank you in advance

Answer 1

sort your array by providing a custom compare function to this array method. Then proceed with your shifting approach.

Note

Be aware that due to a task object's structure each time property features the to be compared value as string value . Thus this value has to be explicitly casted into a number value in order to contribute to a correct (and non breaking) comparison result ...

 function fetchNewTask(task) { // does mutate the original // array reference. return task .sort((a, b) => Number(b.time) - Number(a.time)) .shift(); }; const assignableTasks = [{ title: 'Design Framework', time: '5', sequential: 0, seqData: '', }, { title: 'Design UI', time: '3', sequential: 0, seqData: '', }, { title: 'Design Software', time: '10', sequential: 1, seqData: 'Design Framework', }]; console.log('assignableTasks :', assignableTasks); console.log('fetchNewTask(assignableTasks) :', fetchNewTask(assignableTasks)); console.log('assignableTasks :', assignableTasks);

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