从javascript对象删除一行

问题描述

我有一个如下所示的javascript对象：-

I have a javascript object which looks like this :-

var myObject = [{"id": "1", "URL": "http://shsudhf.com", "value": "1"},

                {"id": "2", "URL": "http://shsusadhf.com", "value": "2"},

                {"id": "3", "URL": "http://shsudsdff.com", "value": "0"}];

现在，我必须删除ID值为的对象中的所有行2 。

Now , I have to delete all the rows in the object with id value 2. How can this be done ?

推荐答案

如果删除行后不需要原始数组，则可以使用 splice 像这样：

If you don't need the original array after "deleting" rows, you can use splice like this:

var myArray = [{"id": "1", "URL": "http://shsudhf.com", "value": "1"},
                {"id": "2", "URL": "http://shsusadhf.com", "value": "2"},
                {"id": "3", "URL": "http://shsudsdff.com", "value": "0"}];

function removeItemsById(arr, id) {
    var i = arr.length;
    if (i) {   // (not 0)
        while (--i) {
            var cur = arr[i];
            if (cur.id == id) {
                arr.splice(i, 1);
            }
        }
    }
}

removeItemsById(myArray, "2");

console.log(JSON.stringify(myArray));

它不会创建新的数组，只是修改原始数组。如果需要原始数组及其所有项目，请使用其他解决方案之一，该解决方案将为您返回原始数组的修改副本。

It doesn't create a new array, just modifies the original in place. If you need the original array and all of its items, then use one of the other solutions that return you a modified copy of the original.

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