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Create JSON object dynamically via JavaScript (Without concate strings) Ask Question

tag-icon • tag-icon javascript json
Create JSON object dynamically via JavaScript (Without concate strings) Ask Question

I have this JSON data:

{
    "employees": [
        {
            "firstName": "John",
            "lastName": "Doe"
        },
        {
            "firstName": "Anna",
            "lastName": "Smith"
        },
        {
            "firstName": "Peter",
            "lastName": "Jones"
        }
    ]
}

Suppose I don't know how many columns and rows of employees I have, how do I create this object in JavaScript (Without concate strings)? Assume that I get each row in "onGeneratedRow" method, and I need to push each column (firstName, lastName) to the '{}' brackets.

var viewData = { 
    employees : [] 
};

var rowNum = -1; 

function onGeneratedRow(columnsResult)
{
    rowNum = rowNum + 1;
    viewData.employees.push({});    
    columnsResult.forEach(function(column) {                  
    var columnName = column.metadata.colName;
    viewData.employees[rowNum][columnName] = column.value;  });
}

ベストアンサー1

This is what you need!

function onGeneratedRow(columnsResult)
{
    var jsonData = {};
    columnsResult.forEach(function(column) 
    {
        var columnName = column.metadata.colName;
        jsonData[columnName] = column.value;
    });
    viewData.employees.push(jsonData);
 }

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