Question

我有json文件，数据就像这样

   [{"wingnum":0,"name":"vatsal chauhan","email":"chauhanvatsal81@yahoo.com","city":"bhavnagar","address":"asdf"},
{"wingnum":0,"name":"hardik","email":"hardikdave@gmail.com","city":"GANDHINAGAR","address":"Gandhinagar"},
{"wingnum":0,"name":"kevin","email":"kevin@gmail.com","city":"GANDHINAGAR","address":"Gandhinagar"},
{"wingnum":0,"name":"rohit","email":"rohit@gmail.com","city":"GANDHINAGAR","address":"Gandhinagar"}]

我想使用fs.readfile或任何其他选项搜索名称，我的代码如下所示

exports.getdata = function(req,res,next){
console.log('reqobj',req.body.params.name);

fs.readFile('./server/api/Appartment/appartment.json', 'utf8',function          read(err, data) {

        /*obj = JSON.parse(data);
        console.log(obj);*/
        if (err) {
            throw err;
        }
        else{
            if (data === ""){

                console.log('data does not exsist');


            }
            else{
                console.log('exsist data getdata');
                var arrayobject = JSON.parse(data);

                console.log(arrayobject);
                return res.status(200).json(data);
                }
        }

        // res.end();      
});
};

此代码提供所有数据，但我想根据传递的参数获取名称像自动完成

Answer 1

一旦解析了JSON并将对象放在变量中，就要在此函数中传递要搜索的对象和名称：

var searchname=function(x, somename){
    for(var i = 0; i < x.length; i++) {
        if (x[i]['name']==somename){
            return i;
        }
    }
    return -1; //This means no match found
}

例如，您可以在代码中获取包含所需名称的文档：

var index=searchname(arrayobject, req.body.params.name);
if (index!=-1){
    console.log(json[index]);
    // Or do something else with json[index]
}

更新：如果你想在对象本身内进行搜索，并获得符合条件的所有名称，那么函数将如何改变：

var searchname=function(x, somename){
    var result=[];
    for(var i = 0; i < x.length; i++) {
        if (x[i]['name'].indexOf(somename)>-1){
            result.push(x[i]['name']);
        }
    }
    return result; //Array containing matched names. Returns empty array if no matches found.
}

console.log(searchname(arrayobject, req.body.params.name)); //To display the working of above for testing.

从节点js中的json文件中搜索单词

1 个答案: