Sort array of objects

问题

I have an array of object literals like this:

var myArr = [];

myArr[0] = {
   'score': 4,
   'name': 'foo'
}

myArr[1] = {
   'score': 1,
   'name': 'bar'
}

myArr[2] = {
   'score': 3,
   'name': 'foobar'
}

How would I sort the array so it ascends by the 'score' parameter such that it would change to:

myArr[0] = {
   'score': 1,
   'name': 'bar'
}

myArr[1] = {
   'score': 3,
   'name': 'foobar'
}

myArr[2] = {
   'score': 4,
   'name': 'foo'
}

Thanks in advance.

回答1:

Try myArr.sort(function (a, b) {return a.score - b.score});

The way the array elements are sorted depends on what number the function passed in returns:

• < 0 (negative number): a goes ahead of b
• > 0 (positive number): b goes ahead of a
• 0: In this cases the two numbers will be adjacent in the sorted list. However, the sort is not guaranteed to be stable: the order of a and b relative to each other may change.

回答2:

You could have a look at the Array.sort documentation on MDN. Specifically at the documentation about providing a custom compareFunction

回答3:

const myArray = [  
    {
   'score': 4,
   'name': 'foo'
},{
   'score': 1,
   'name': 'bar'
},{
   'score': 3,
   'name': 'foobar'
}
]

const myOrderedArray = _.sortBy(myArray, o => o.name);
console.log(myOrderedArray);

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.js"></script>

lodash sortBy

来源：https://stackoverflow.com/questions/5876424/sort-array-of-objects