我使用AJAX获取了以下对象,并将它们存储在数组中:

var homes = [
    {
        "h_id": "3",
        "city": "Dallas",
        "state": "TX",
        "zip": "75201",
        "price": "162500"
    }, {
        "h_id": "4",
        "city": "Bevery Hills",
        "state": "CA",
        "zip": "90210",
        "price": "319250"
    }, {
        "h_id": "5",
        "city": "New York",
        "state": "NY",
        "zip": "00010",
        "price": "962500"
    }
];

如何创建一个函数,仅使用JavaScript按price属性按升序或降序对对象进行排序?


当前回答

 function compareValues(key, order = 'asc') {
  return function innerSort(a, b) {
    if (!a.hasOwnProperty(key) || !b.hasOwnProperty(key)) {
      // property doesn't exist on either object
      return 0;
    }

    const varA = (typeof a[key] === 'string')
      ? a[key].toUpperCase() : a[key];
    const varB = (typeof b[key] === 'string')
      ? b[key].toUpperCase() : b[key];

    let comparison = 0;
    if (varA > varB) {
      comparison = 1;
    } else if (varA < varB) {
      comparison = -1;
    }
    return (
      (order === 'desc') ? (comparison * -1) : comparison
    );
  };
}

http://yazilimsozluk.com/sort-array-in-javascript-by-asc-or-desc

其他回答

这里是以上所有答案的顶点。

Fiddle验证:http://jsfiddle.net/bobberino/4qqk3/

var sortOn = function (arr, prop, reverse, numeric) {

    // Ensure there's a property
    if (!prop || !arr) {
        return arr
    }

    // Set up sort function
    var sort_by = function (field, rev, primer) {

        // Return the required a,b function
        return function (a, b) {

            // Reset a, b to the field
            a = primer(a[field]), b = primer(b[field]);

            // Do actual sorting, reverse as needed
            return ((a < b) ? -1 : ((a > b) ? 1 : 0)) * (rev ? -1 : 1);
        }

    }

    // Distinguish between numeric and string to prevent 100's from coming before smaller
    // e.g.
    // 1
    // 20
    // 3
    // 4000
    // 50

    if (numeric) {

        // Do sort "in place" with sort_by function
        arr.sort(sort_by(prop, reverse, function (a) {

            // - Force value to a string.
            // - Replace any non numeric characters.
            // - Parse as float to allow 0.02 values.
            return parseFloat(String(a).replace(/[^0-9.-]+/g, ''));

        }));
    } else {

        // Do sort "in place" with sort_by function
        arr.sort(sort_by(prop, reverse, function (a) {

            // - Force value to string.
            return String(a).toUpperCase();

        }));
    }


}

我最近编写了一个通用函数,如果您想使用它,可以为您管理它。

/**
 * Sorts an object into an order
 *
 * @require jQuery
 *
 * @param object Our JSON object to sort
 * @param type Only alphabetical at the moment
 * @param identifier The array or object key to sort by
 * @param order Ascending or Descending
 *
 * @returns Array
 */
function sortItems(object, type, identifier, order){

    var returnedArray = [];
    var emptiesArray = []; // An array for all of our empty cans

    // Convert the given object to an array
    $.each(object, function(key, object){

        // Store all of our empty cans in their own array
        // Store all other objects in our returned array
        object[identifier] == null ? emptiesArray.push(object) : returnedArray.push(object);

    });

    // Sort the array based on the type given
    switch(type){

        case 'alphabetical':

            returnedArray.sort(function(a, b){

                return(a[identifier] == b[identifier]) ? 0 : (

                    // Sort ascending or descending based on order given
                    order == 'asc' ? a[identifier] > b[identifier] : a[identifier] < b[identifier]

                ) ? 1 : -1;

            });

            break;

        default:

    }

    // Return our sorted array along with the empties at the bottom depending on sort order
    return order == 'asc' ? returnedArray.concat(emptiesArray) : emptiesArray.concat(returnedArray);

}

仅对于元素值的普通数组:

function sortArrayOfElements(arrayToSort) {
    function compareElements(a, b) {
        if (a < b)
            return -1;
        if (a > b)
            return 1;
        return 0;
    }

    return arrayToSort.sort(compareElements);
}

e.g. 1:
var array1 = [1,2,545,676,64,2,24]
output : [1, 2, 2, 24, 64, 545, 676]

var array2 = ["v","a",545,676,64,2,"24"]
output: ["a", "v", 2, "24", 64, 545, 676]

对于对象数组:

function sortArrayOfObjects(arrayToSort, key) {
    function compareObjects(a, b) {
        if (a[key] < b[key])
            return -1;
        if (a[key] > b[key])
            return 1;
        return 0;
    }

    return arrayToSort.sort(compareObjects);
}

e.g. 1: var array1= [{"name": "User4", "value": 4},{"name": "User3", "value": 3},{"name": "User2", "value": 2}]

output : [{"name": "User2", "value": 2},{"name": "User3", "value": 3},{"name": "User4", "value": 4}]

如果不想使用任何sort()方法,可以使用以下方法

函数sortObj(obj){设numArr=[]//仅包含价格作为Number的数组让sortedObj=[];对象映射((x)=>{numArr.push(数字(x[“价格”]));});而(numArr.length>0){让minIndex=numArr.indexOf(数学最小(…numArr))//obj最便宜的住宅指数numArr.拼接(最小索引,1);排序对象推送(对象拼接(minIndex,1));//将最便宜的家庭从Homes Array拼接到sortedObj Array。}console.log(sortedObj);}var家=[{h_id:“3”,城市:“达拉斯”,状态:“TX”,邮编:“75201”,价格:“162500”,},{h_id:“4”,城市:“贝弗利山”,状态:“CA”,邮编:“90210”,价格:“319250”,},{h_id:“5”,城市:“纽约”,州:“NY”,邮编:“00010”,价格:“962500”,},];sortObj(家);

这可以通过一个简单的单行值of()排序函数实现。运行下面的代码片段以查看演示。

var家=[{“h_id”:“3”,“城市”:“达拉斯”,“状态”:“TX”,“zip”:“75201”,“价格”:“162500”}, {“h_id”:“4”,“城市”:“贝弗利山”,“状态”:“CA”,“zip”:“90210”,“price”:“319250”}, {“h_id”:“5”,“城市”:“纽约”,“州”:“NY”,“zip”:“00010”,“价格”:“962500”}];console.log(“要首先对降序/最高排序,请使用运算符'<'”);homes.sort(函数(a,b){return a.price.valueOf()<b.price.vvalueOf(;});console.log(homes);console.log(“要首先对升序/最低排序,请使用运算符'>'”);homes.sort(函数(a,b){return a.price.valueOf()>b.price.vvalueOf(;});console.log(homes);