如何对JSON对象进行计数并在计数的基础上取相同的输出

Question

    var obj = 
   [
    {"id":"0","name":"Mike Johnson","group":1},
    {"id":"1","name":"Bob Smith","group":2},
    {"id":"2","name":"Richard Thomas","group":3},
    {"id":"3","name":"Betty White","group":16},
    {"id":"4","name":"Tim Thompson","group":3},
    {"id":"5","name":"Carl Lewis","group":16},
    {"id":"6","name":"Kathy Towers","group":3},
    {"id":"7","name":"Billy Bob","group":1},
    {"id":"8","name":"Sally Bailey","group":1}
    ];

首先我想在计数的基础上进行计数。我想要与输入相同的输出。对于计数：-

var count = 0;
function getCount() {

for (var i = 0; i < obj.length; i++) {

        count++;

}
return count;
}

输出：-

function showDetails()   this is not giving the proper output
{ 

   for(var j=0; j< count; j++){ 
   obj.push([{j}]);    
   }                   
alert(obj.name);        
}                      
alert(showDetails());   
And I want an output like:- 

     var obj = 
   [
    {"id":"0","name":"Mike Johnson","group":1},
    {"id":"1","name":"Bob Smith","group":2},
    {"id":"2","name":"Richard Thomas","group":3},
    {"id":"3","name":"Betty White","group":16},
    {"id":"4","name":"Tim Thompson","group":3},
    {"id":"5","name":"Carl Lewis","group":16},
    {"id":"6","name":"Kathy Towers","group":3},
    {"id":"7","name":"Billy Bob","group":1},
    {"id":"8","name":"Sally Bailey","group":1}
    ];

有人可以帮我吗？

Answer 1

var str = "January,February,March,April,May,June,July,August,September,October";

var arr = str.split(',').map(function(v) {
 return {name: v};
});

console.log(arr);

Answer 2

var data ="January,February,March,April,May,June,July,August,September,October";
var obj = data.split(',').map((item)=>{
     return {
           name:item
           }
});

obj 将是所需的输出

Answer 3

var str = "January,February,March,April,May,June,July,August,September,October";
var months = str.split(",");
var result = [];


for (i in months)
{
   var month = {};
   month.name = months[i];
   //you can do more things else here, for example:
   //month.monthOfYear = (i+1);
   //month.numberOfDay = 123123123;
   result.push(month);
}

Answer 4

你可以这样做：

var array = string.split(",");
var finalArray = [];

array.forEach(function(item){

   var obj = {
        name: item
   }

   finalArray.push(obj);

});

console.log(finalArray);

Answer 5

求更ES2015重磅版。常量、箭头函数和隐式 return 语句。

const str = 'January,February,March,April,May,June,July,August,September,October'
const result = str.split(',').map(name => ({name}))
console.log(result)

Answer 6

MDN reference

使用var array = string.split(',');

如何对JSON对象进行计数并在计数的基础上取相同的输出

How to count the JSON object and on the basis of count take the same output

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dom-events