Question

我正在尝试订购一个我从JSON“转换”的对象。我正在尝试使用我在this question上找到的这个功能，但它在我的情况下似乎不起作用：

function sortJsonArrayByProperty(objArray, prop, direction){
    if (arguments.length<2) throw new Error("sortJsonArrayByProp requires 2 arguments");
    var direct = arguments.length>2 ? arguments[2] : 1; //Default to ascending

    if (objArray && objArray.constructor===Array){
        var propPath = (prop.constructor===Array) ? prop : prop.split(".");
        objArray.sort(function(a,b){
            for (var p in propPath){
                if (a[propPath[p]] && b[propPath[p]]){
                    a = a[propPath[p]];
                    b = b[propPath[p]];
                }
            }
            // convert numeric strings to integers
            a = a.match(/^\d+$/) ? +a : a;
            b = b.match(/^\d+$/) ? +b : b;
            return ( (a < b) ? -1*direct : ((a > b) ? 1*direct : 0) );
        });
    }
}

这是我的JsFiddle

我想以3种不同的方式对其进行排序：

按时间顺序排列（使用“时间”字段）
按字母顺序排列（使用“term”字段“）
所有按时间顺序排列（忽略字母分隔）

如果这个对象不是那么嵌套，我会知道怎么做。我可以调整这个功能吗？

Answer 1

你还没有解释你想要的输出，所以这里是基于jsFiddle数据的逻辑猜测。

好的，这是来自你的jsFiddle的数据，这是一种可以理解的形式：

var obj = {saved: [
    {"dict":"English","terms": [
        {"term":"car","rowId":"3487","time":"1384773838069"},
        {"term":"dog","rowId":"443","time":"1384776129957"},
        {"term":"plane","rowId":"16171","time":"1384776168253"},
        {"term":"bread","rowId":"127564","time":"1384959605196"}]
     }, 
     {"dict":"French","terms": [
         {"term":"Monsieur","rowId":"934","time":"1384862250130"},
         {"term":"Croissant","rowId":"13612","time":"1384900161187"},
         {"term":"suis","rowId":"942","time":"1384900437068"}]
      }
    ]
};

我假设你想要用它中的一个字段分别对每个术语数组进行排序。

以下是按字段排序的方法：

// utility function for sorting an array by a key in alpha order
function sortArrayAlpha(arr, key) {
    arr.sort(function(a, b) {
        return a[key].localeCompare(b[key]);
    });
}

// utility function for sorting an array by a key in parsed numeric order
function sortArrayNum(arr, key) {
    arr.sort(function(a, b) {
        return parseInt(a[key], 10) - parseInt(b[key], 10);
    });
}

// sort by term
var dicts = obj.saved;
// cycle through each item in the saved array
for (var i = 0; i < dicts.length; i++) {
    var terms = dicts[i].terms;
    sortArrayAlpha(terms, "term");
}

// sort by time
// cycle through each item in the saved array
for (var i = 0; i < dicts.length; i++) {
    var terms = dicts[i].terms;
    sortArrayNum(terms, "time");
}

// sort by rowId
// cycle through each item in the saved array
for (var i = 0; i < dicts.length; i++) {
    var terms = dicts[i].terms;
    sortArrayNum(terms, "rowId");
}

并且，显示输出的jsFiddle：http://jsfiddle.net/jfriend00/vH8u7/。您可以在jsFiddle中看到每种排序的确切输出格式。

以下是按术语排序的内容：

{"saved":[
    {"dict":"English","terms":[
        {"term":"bread","rowId":"127564","time":"1384959605196"},
        {"term":"car","rowId":"3487","time":"1384773838069"},
        {"term":"dog","rowId":"443","time":"1384776129957"},
        {"term":"plane","rowId":"16171","time":"1384776168253"}]},
    {"dict":"French","terms":[
        {"term":"Croissant","rowId":"13612","time":"1384900161187"},
        {"term":"Monsieur","rowId":"934","time":"1384862250130"},
        {"term":"suis","rowId":"942","time":"1384900437068"}]
    }
]}

对对象进行排序

1 个答案: