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Javascript 在对象数组中查找索引_Javascript_Underscore.js - Fatal编程技术网

Javascript 在对象数组中查找索引

Javascript 在对象数组中查找索引,javascript,underscore.js,Javascript,Underscore.js,我想在数组中查找索引。数组中的位置是对象,我想根据它们的属性进行过滤。我知道要过滤哪些键及其值。问题是获取满足条件的数组索引 现在,我编写了代码来过滤数据,并返回对象数据,但不返回数组的索引 var data = [ { "text":"one","siteid":"1","chid":"default","userid":"8","time":1374156747 }, { "text":"two

我想在数组中查找索引。数组中的位置是对象,我想根据它们的属性进行过滤。我知道要过滤哪些键及其值。问题是获取满足条件的数组索引

现在,我编写了代码来过滤数据,并返回对象数据,但不返回数组的索引

var data =  [
        {
            "text":"one","siteid":"1","chid":"default","userid":"8","time":1374156747
        },
        {
            "text":"two","siteid":"1","chid":"default","userid":"7","time":1374156735
        }
    ];

var filterparams = {userid:'7', chid: 'default'};

function getIndexOfArray(thelist, props){
    var pnames = _.keys(props)
    return _.find(thelist, function(obj){
        return _.all(pnames, function(pname){return obj[pname] == props[pname]})
    })};

var check = getIndexOfArray(data, filterparams ); // Want to get '2', not key => val

我不认为你需要下划线,只是普通的ole js-希望这就是你要找的

var data =  [
        {
            "text":"one","siteid":"1","chid":"default","userid":"8","time":1374156747
        },
        {
            "text":"two","siteid":"1","chid":"default","userid":"7","time":1374156735
        }
    ];

var userid = "userid"
var filterparams = {userid:'7', chid: 'default'};
var index;
for (i=0; i < data.length; i++) {
    for (prop in data[i]) {
        if ((prop === userid) && (data[i]['userid'] === filterparams.userid)) {
            index = i
        }
    }
}

alert(index);
var数据=[
{
“文本”:“一”,“站点ID”:“1”,“chid”:“默认”,“用户ID”:“8”,“时间”:1374156747
},
{
“文本”:“两个”,“站点ID”:“1”,“chid”:“默认”,“用户ID”:“7”,“时间”:1374156735
}
];
var userid=“userid”
var filterparams={userid:'7',chid:'default'};
var指数;
对于(i=0;i
我不确定,但我认为这正是您需要的:

var data =  [{
    "text":"one","siteid":"1","chid":"default","userid":"8","time":1374156747
}, {
    "text":"two","siteid":"1","chid":"default","userid":"7","time":1374156735
}];
var filterparams = {userid:'7', chid: 'default'};

var index = data.indexOf( _.findWhere( data, filterparams ) );
希望它能帮助你吗

 for(var intIndex=0;intIndex < data.length; intIndex++){
  eachobj = data[intIndex];
var flag = true;
 for (var k in filterparams) {

    if (eachobj.hasOwnProperty(k)) {
        if(eachobj[k].toString() != filterparams[k].toString()){
           flag = false;
        }
    }
}
if(flag){
       alert(intIndex);
}
for(var intIndex=0;intIndex
}

使用下划线代替下划线,您可以非常轻松地使用


不是真正的答案,但你可以使用
.findWhere
得到与你现在得到的完全相同的结果我想他想要的是
索引,而不是
lastIndexOf
prop==userid
应该在那里做什么?难道你不能完全省略
数据[i]
的属性枚举吗?prop===userid必须等于我刚刚存储在变量中的对象的键值非常感谢,例如我需要的:)祝您愉快,先生!这应该是可接受的答案,因为它使用下划线。
var index = _.findIndex(array, { userid: '7', chid: 'default' })