Question

我有一个类似的数组：

['honda accord', '1986 honda accord', '1990 honda accord', '2000 honda accord', '2011 honda accord', '2016 honda accord'].

我需要在javascript中对此进行排序，以便结果为：

['honda accord', '2016 honda accord', '2011 honda accord', '2000 honda accord', '1990 honda accord', '1986 honda accord'].

我该怎么做。

array.sort()

不起作用。我知道我需要发送一个函数来排序。

由于布赖恩

Answer 1

您可以使用split并检查字符串的第一项

var arr = ['honda accord', '1986 honda accord', '1990 honda accord', '2000 honda accord', '2011 honda accord', '2016 honda accord'];

arr.sort((a, b) => b.split(' ')[0] - a.split(' ')[0])

document.write(JSON.stringify(arr));

Answer 2

工作小提琴： https://jsfiddle.net/7nu7bp3g/

var arr = [
          'honda accord',
          '1986 honda accord',
          '1990 honda accord',
          '2000 honda accord',
          '2011 honda accord',
          '2016 honda accord'
          ];

var sortArr = arr.sort(function(a, b) {
return b.split(' ')[0] - a.split(' ')[0];
});

console.log(sortArr);

我希望它能奏效。

Answer 3

它不是很优雅（或高效）但它有效。基本上它使用正则表达式从每辆车中提取年份然后进行比较。

// the regular expression to extract the year and car
var regEx = /((\d+)\s)*(.*)/;

var list = ['honda accord', '1986 honda accord', '1990 honda accord', '2000 honda accord', '2011 honda accord', '2016 honda accord'];

// custom sort function
list.sort(function(a, b)
{
    // get the car details
    var aR = regEx.exec(a);
    var bR = regEx.exec(b);

    var aCar = aR[3];
    var bCar = bR[3];

    var aYear = aR[2];
    var bYear = bR[2];

    // compare the strings
    if(aCar < bCar) return -1;
    else if(aCar > bCar) return 1;
    // we'll only get this far if both strings are the same

    // if there was no year provided then it should be first
    else if(!aYear) return -1;
    else if(!bYear) return 1;

    // at this point the car types are the same, and both have an year so compare the year
    else if(aYear < bYear) return 1;
    else if(aYear > bYear) return -1;
    return 0;
})

通过预处理列表以在所有项目上运行正则表达式，可以提高效率。

Answer 4

如果没有给出年份，则替换为

var array = ['honda accord', '1986 honda accord', '1990 honda accord', '2000 honda accord', '2011 honda accord', '2016 honda accord'];

array.sort((a, b) => b.replace(/^\D*$/g, '9999 $1').localeCompare(a.replace(/^\D*$/g, '9999 $1')));

document.write('<pre>' + JSON.stringify(array, 0, 4) + '</pre>');

Javascript - 排序alpha然后数字

4 个答案: