开发者问题收集

如何从对象数组中删除一个项目?

2011-04-12
9896
    var arr = [
                     {id:2,date:'2010-10-03',des:'goodday'},
                     {id:3,date:'2011-02-13',des:'badday'},
                     {id:4,date:'2011-04-03',des:'niceday'}
                   ];

现在我想删除 {id:3,date:'2011-02-13',des:'badday'> ,那么arr应该是

        var arr = [
                     {id:2,date:'2010-10-03',des:'goodday'},
                     {id:4,date:'2011-04-03',des:'niceday'}
                   ];

我该怎么办?

3个回答

假设您的对象中的 id 字段是唯一的,您可以执行以下操作来删除它。要使用的函数是 Splice :

    var arr = [
        {
        id: 2,
        date: '2010-10-03',
        des: 'goodday'},
    {
        id: 3,
        date: '2011-02-13',
        des: 'badday'},
    {
        id: 4,
        date: '2011-04-03',
        des: 'niceday'}
    ];

    for(var i=0; i<arr.length; i++){
        if(arr[i].id == 3){
            arr.splice(i, 1);  //removes 1 element at position i 
            break;
        }
    }

console.log(arr);  
//should give you 
//                      var arr = [
//                               {id:2,date:'2010-10-03',des:'goodday'},
//                               {id:4,date:'2011-04-03',des:'niceday'}
//                          ];
KJYe.Name
2011-04-12

arr.splice(1,1); 将移除 arr[1] 处的对象,而 arr[2] 将滑入其位置。

kennebec
2011-04-12