我怎样才能按字母顺序排列我的数组？
我正在使用node.js 我想按照他们的名字sorting这个数组，它有以下格式：
[["Kingston upon Thames",36.9],["Croydon",36.8],["Bromley",40.1],["Hounslow",35.4],["Ealing",35.9],["Havering",40.3],["Hillingdon",36.2],["Harrow",37.9],["Brent",35.4],["Barnet",37.1],["Lambeth",34.2],["Southwark",34.1],["Lewisham",34.8],["Greenwich",34.9],["Bexley",38.9],["Enfield",36.1],["Waltham Forest",34.7],["Redbridge",35.7],["Sutton",38.6],["Richmond upon Thames",38.5],["Merton",36.4],["Wandsworth",34.8],["Hammersmith and Fulham",35.4],["Kensington and Chelsea",38.9],["Westminster",37.4],["Camden",36],["Tower Hamlets",31.2],["Islington",34.6],["Hackney",32.8],["Haringey",34.8],["Newham",31.7],["Barking and Dagenham",32.9],["City of London",41.9]] 我想把它分类为[“Barking and Dagenham”，32.9]，[“Barnet”，37.1]，[“Bexley”，38.9]等
只要把你喜欢的元素，应用sorting。
array.sort(function (a, b) { return a[0].localeCompare(b[0]); });
工作示例：
var array = [["Kingston upon Thames",36.9],["Croydon",36.8],["Bromley",40.1],["Hounslow",35.4],["Ealing",35.9],["Havering",40.3],["Hillingdon",36.2],["Harrow",37.9],["Brent",35.4],["Barnet",37.1],["Lambeth",34.2],["Southwark",34.1],["Lewisham",34.8],["Greenwich",34.9],["Bexley",38.9],["Enfield",36.1],["Waltham Forest",34.7],["Redbridge",35.7],["Sutton",38.6],["Richmond upon Thames",38.5],["Merton",36.4],["Wandsworth",34.8],["Hammersmith and Fulham",35.4],["Kensington and Chelsea",38.9],["Westminster",37.4],["Camden",36],["Tower Hamlets",31.2],["Islington",34.6],["Hackney",32.8],["Haringey",34.8],["Newham",31.7],["Barking and Dagenham",32.9],["City of London",41.9]]; array.sort(function (a, b) { return a[0].localeCompare(b[0]); }); document.write('<pre>' + JSON.stringify(array, 0, 4) + '</pre>');
使用Array.prototype.sort() 。
a = [["Kingston upon Thames",36.9],["Croydon",36.8],["Bromley",40.1],["Hounslow",35.4],["Ealing",35.9],["Havering",40.3],["Hillingdon",36.2],["Harrow",37.9],["Brent",35.4],["Barnet",37.1],["Lambeth",34.2],["Southwark",34.1],["Lewisham",34.8],["Greenwich",34.9],["Bexley",38.9],["Enfield",36.1],["Waltham Forest",34.7],["Redbridge",35.7],["Sutton",38.6],["Richmond upon Thames",38.5],["Merton",36.4],["Wandsworth",34.8],["Hammersmith and Fulham",35.4],["Kensington and Chelsea",38.9],["Westminster",37.4],["Camden",36],["Tower Hamlets",31.2],["Islington",34.6],["Hackney",32.8],["Haringey",34.8],["Newham",31.7],["Barking and Dagenham",32.9],["City of London",41.9]]; a.sort(function(a, b){ var aName = a[0].toLowerCase(); var bName = b[0].toLowerCase(); return ((aName < bName) ? -1 : ((aName > bName) ? 1 : 0)); }); console.log(a);
这种方式可能效率不高，但它会为你的目的服务。
var myArray =[["Kingston upon Thames",36.9],["Croydon",36.8],["Bromley",40.1],["Hounslow",35.4],["Ealing",35.9],["Havering",40.3],["Hillingdon",36.2],["Harrow",37.9],["Brent",35.4],["Barnet",37.1],["Lambeth",34.2],["Southwark",34.1],["Lewisham",34.8],["Greenwich",34.9],["Bexley",38.9],["Enfield",36.1],["Waltham Forest",34.7],["Redbridge",35.7],["Sutton",38.6],["Richmond upon Thames",38.5],["Merton",36.4],["Wandsworth",34.8],["Hammersmith and Fulham",35.4],["Kensington and Chelsea",38.9],["Westminster",37.4],["Camden",36],["Tower Hamlets",31.2],["Islington",34.6],["Hackney",32.8],["Haringey",34.8],["Newham",31.7],["Barking and Dagenham",32.9],["City of London",41.9]] // Convert array of arrays to single json object var _tempArray = []; for(var i =0;i<myArray.length;i++){ _tempArray.push({ "name":myArray[i][0], "val":myArray[i][1] }) } //sort it var sortedArray = _tempArray.sort(function(a,b){ return a.name >b.name?1:-1 }) console.log(sortedArray);
jsfiddle工作模式