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I'm trying to concat the selected items from 2 grids in to an array for further processing but I don't want to affect any change in either data source and this is proving problematic as the first data source seems to (after the concat) contain the items I pull from the first ...

var allItems = JSLINQ(grid1.data("kendoGrid").dataSource.data())
     .Concat(grid2.data("kendoGrid").dataSource.data())
     .ToArray();

the source code for the concat function in JSLINQ is doing this ...

Concat: function (array) {
    var arr = array.items || array;
    return new JSLINQ(this.items.concat(arr));
}

this.items is from what I can tell the value of "grid1.data("kendoGrid").dataSource.data()" and i'm trying to build a new array with the items in "grid2.data("kendoGrid").dataSource.data()" which I then intend to filter based on selection criteria.

does anyone have any experience with this / a means to say "I want a copy of the data item from the source that's not connected to the source"?

UPDATE: The base functionality here relies on having a standard JS array, it seems that kendo returns an observable array object (specific to kendo, and missing the concat function).

The implementation above results in an exception on the concat call (because it doesn't exist), so I rewrote the function to something like this ...

Concat: function (array) {
    //var arr = array.items || array;
    //return new JSLINQ(this.items.concat(arr));

    var retVal = new Array();
    for (var i = 0; i < this.items.length; i++) {
        var clone = JSON.parse(JSON.stringify(this.items[i]));
        retVal.push(clone);
    }
    for (var i = 0; i < array.length; i++) {
        var clone = JSON.parse(JSON.stringify(array[i]));
        this.items.push(clone);
    }

    return new JSLINQ(retVal);
},

That results in the duplicate problem I mentioned above.

So it seems that the error I have here is something to do with observable array, but I don't know how to get a "detatched item" / "array" from the data source.

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1 回答 1

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好的，结果是可观察数组上的 toJSON() 方法将可观察数组转换为数组（奇怪的命名，但嘿，这是剑道对！）

简而言之，通过操纵我对 JSLINQ 方法的调用输入来包含它，我就会有正常的 JS 行为，正如我所期望的那样......

var allItems = JSLINQ(grid1.data("kendoGrid").dataSource.data().toJSON())
     .Concat(grid2.data("kendoGrid").dataSource.data().toJSON())
     .ToArray();
于 2017-02-09T16:09:54.223 回答