jsの常用パッケージ関数ライブラリの配列操作

// arrayEqual
//           
function arrayEqual(arr1, arr2) {
    if (arr1 === arr2) return true;
    if (arr1.length != arr2.length) return false;
    for (var i = 0; i < arr1.length; ++i) {
        if (arr1[i] !== arr2[i]) return false;
    }
    return true;
}


//         
//         
//var arr=[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:5,b:9},{a:4,b:2,c:5},{a:4,b:5,c:7}]
//getOptionArray(arr,'a,c')
//[{a:1,c:9},{a:2,c:5},{a:5,c:underfind},{a:4,c:5},{a:4,c:7}]
//        
//getOptionArray(arr,'a',1)
//getOptionArray(arr,'b',1)
//[2, 3, 9, 2, 5]
function getOptionArray(arr, keys, type) {
    var newArr = [];
    if (!keys) {
        return arr
    }
    //             
    if (type === 1) {
        for (var i = 0, len = arr.length; i < len; i++) {
            newArr.push(arr[i][keys])
        }
        return newArr;
    }
    var _keys = keys.split(','), newArrOne = {};
    for (var i = 0, len = arr.length; i < len; i++) {
        newArrOne = {};
        for (var j = 0, len1 = _keys.length; j < len1; j++) {
            newArrOne[_keys[j]] = arr[i][_keys[j]]
        }
        newArr.push(newArrOne);
    }
    return newArr;
}




//       
//       
//var arr=[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:5,b:9},{a:4,b:2,c:5},{a:4,b:5,c:7}]
//filterOptionArray(arr,'a')
//[{b:2,c:9},{b:3,c:5},{b:9},{b:2,c:5},{b:5,c:7}]
//filterOptionArray(arr,'a,c')
//[{b:2},{b:3},{b:9},{b:2},{b:5}]
function filterOptionArray(arr, keys) {
    var newArr = [];
    var _keys = keys.split(','), newArrOne = {};
    for (var i = 0, len = arr.length; i < len; i++) {
        newArrOne = {};
        for (var key in arr[i]) {
            //  key     keys  ,    
            if (_keys.indexOf(key) === -1) {
                newArrOne[key] = arr[i][key];
            }
        }
        newArr.push(newArrOne);
    }
    return newArr;
}



//      
//       
//var arr=[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:5,b:9},{a:4,b:2,c:5},{a:4,b:5,c:7}]
//arraySort(arr2,'a,b')  a       ，b       
//[{a:1,b:2,c:9},{a:2,b:3,c:5},{a:4,b:2,c:5},{a:4,b:5,c:7},{a:5,b:9}]
function arraySort (arr, sortText) {
    if (!sortText) {
        return arr;
    }
    var _sortText = sortText.split(',').reverse(), _arr = arr.slice(0);
    for (var i = 0, len = _sortText.length; i < len; i++) {
        _arr.sort(function (n1, n2) {
            return n1[_sortText[i]] - n2[_sortText[i]];
        })
    }
    return _arr;
}