如何从二维数组中删除特定的一维数组？

Question

I have project's function as follow: I have a two-dimensional array, then should delete the specific one-dimensional array. The two-dimensional array is:

//ID,Name,Age,Score.Student's ID is unique.

var arr1=[["1","aaa","20","90"],
      ["2","bbb","21","80"],
      ["3","ccc","22","70"], 
      ["4","ddd","23","60"],
     ];

var arr2=["3","ccc","22","70"];

I want to get the a two-dimensional array.The result as follow:

result=arr1=[["1","aaa","20","90"],
      ["2","bbb","21","80"],
      ["4","ddd","23","60"],
     ];

I write some codes,but I get a logic error.The URL of jsfiddle is: Edit fiddle

Thank you very much.

Answer 1

So you want to delete the array in arr1 with the ID correspoding to the ID in arr2 ? If thats the problem simply write:

for(var i=0;i<arr1.length;i++){
    if(arr1[i][0] === arr2[0])
        arr1.splice(i, 1);
}

http://jsfiddle.net/2pYT2/3/

Answer 2

Since you are using Underscore in your demo:

var result = _.filter(arr1, function (el) {
    return el[0] != arr2[0];
});

Updated demo: http://jsfiddle.net/2pYT2/4/

Answer 3

You can use filter function of Array. See the code below, not tested but hope it helps.

This is to fix your current code. Better is solution is to convert two dimensional array to dictionary as MarcoCI suggested. It will help to you a lot.

var arr1 = [
    ["1", "aaa", "20", "90"],
    ["2", "bbb", "21", "80"],
    ["3", "ccc", "22", "70"],
    ["4", "ddd", "23", "60"], ];
var arr2 = ["3", "ccc", "22", "70"];




// filters comparing all elements
// use filterArray(sourceArray, array1, array2, array3 ...)
function filterArray(arr) {
    var args = arguments;
    return arr.filter(function (x) {
        for (var i = 1; i < args.length; i++) {
            var tarr = args[i];
            for (var j = 0; j < tarr.length && j < x.length; j++) {
                if (tarr[j] != x[j]) {
                    return true;
                }
            }
        }
        return false;
    });

}

console.log(filterArray(arr1, arr2));

// filters comparing 0th element
// use filterArrayID(sourceArray, array1, array2, array3 ...)
function filterArrayID(arr) {
    var args = arguments;
    return arr.filter(function (x) {
        for (var i = 1; i < args.length; i++) {
            var tarr = args[i];
            if (tarr[0] != x[0]) {
                return true;
            }
        }
        return false;
    });

}

console.log(filterArrayID(arr1, arr2));

fiddle : http://jsfiddle.net/2pYT2/5/