angularjs：比较Array中的值，并在新数组中添加它的数量

Question

我有一个包含多个值的数组，我想比较一些值是否相等，如果有多于1等于它，则将值放在一个新数组中

示例：

   for(var i=0; i<res.data.diaries.length;i++){

        var values = res.data.diaries[i].diary.symptoms;
        if( typeof values.whichSymptoms !== 'undefined' ) {
            // foo could get resolved and it's defined
            for(var j= 0; j<values.whichSymptoms.length;j++){
                //console.log(values.whichSymptoms[j].text);
                var whichSymptoms = values.whichSymptoms[j];
                console.log(whichSymptoms);

                //// ToDo Check values if equal and put that in an array.
            }

        }
    }

Answer 1

好的，现在明白了......         var counts = {};         var元素;         myArray.forEach（function（element）{             count [element] =（counts [element] || 0）+ 1;         }）;         var donatSymptoms = [];         var donatSymptomsCount = [];         for（计数中的元素）{             donatSymptoms.push（元件）;             donatSymptomsCount.push（计数[元素]）             console.log（element +＆＃39; =＆＃39; + counts [element]）;         }         的console.log（donatSymptoms，donatSymptomsCount）;