在对象数组中查找索引

Find index in array of objects

本文关键字：查找 索引 数组 对象      更新时间：2023-09-26

我想在数组中找到索引。数组中的位置是对象，我想根据它们的属性进行过滤。我知道要筛选哪些键及其值。问题是获取符合条件的数组的索引。

现在，我编写了一些代码来过滤数据，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

使用Lo Dash代替下划线可以很容易地使用_.findIndex()。

var index = _.findIndex(array, { userid: '7', chid: 'default' })

希望它能帮助您

 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);
}

}

我不确定，但我认为这正是您所需要的：

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 ) );

我认为你不需要下划线，只需要普通的ole js-希望这就是你想要的

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