Push child array of objects into parent array

Question

I have a parent array lines = [] and contains a number of objects in lines.push(data); . The data is read line by line in my node application. And i split each line whenever \\ slash character is found. Then change line into Objects data = {} and properties data.marker; data.value; data.children data.marker; data.value; data.children data.marker; data.value; data.children and so. Now when a line which has several \\ slash characters is found i want that data.children to be a child array of objects. This is the line data after split()

    [ 'ft Some older versions read, ',
      'fqa And we are writing these things to you so that your joy will be complete. ',
      'fqb  ',
      'f*' ]

and this is my code to convert into data.children array

    data.children = [];
    //object for child
    var obj = {};
    for (var j=0; j<childArr.length; j++) {
        obj.marker = childArr[j].split(" ")[0] ;
        obj.value = childArr[j].substr(childArr[j].indexOf(' ')+1) ;                           
    }
    data.children.push(obj);

Now when i check console.log(data.children) this is what i gets

    [ { marker: 'f*', value: 'f*' }]

instead of what i need is

    [ { marker: 'ft' , value: 'Some older versions read,' },
      { marker: 'fqa', value: 'And we are writing these things to you so that your joy will be complete.' },
      { marker: 'fqb', value: 'null' },
      { marker: 'f*', value: 'null' },]

I am sure that it will be some trouble while i am pushing data into children array. Any help will be appreciated! Thanks in advance.

Answer 1

This is the right answer i needed. Sorry for posting it very lately and appreciate all of your efforts. Thank you.

data.children = [];

 var childArr = [ 'ft Some older versions read, ', 'fqa And we are writing these things to you so that your joy will be complete. ', 'fqb ', 'f*' ]; var data = {}; data.children = []; for (var j = 0; j < childArr.length; j++) { let split = childArr[j].split(" "); data.children.push({ marker: split[0], value: ((split[1] == "" ||split[1] == undefined) ? null : split.slice(1).join(" ")) }); } console.log(data.children); 

Answer 2

If I understand you correctly you are only creating one object, then updating it, wheras you want 1 object in object.children for each item in the array "childArr" ...

data.children = [];
//object for child
var obj = {};
for (var j=0; j<childArr.length; j++) {
    var obj = {
        marker: childArr[j].split(" ")[0],
        value: childArr[j].substr(childArr[j].indexOf(' ')+1) 
    };
    data.children.push(obj);                  
}

Or did I miss something?

Answer 3

 var childArr = [ 'ft Some older versions read, ', 'fqa And we are writing these things to you so that your joy will be complete. ', 'fqb ', 'f*' ]; var data = {}; data.children = []; for (var j=0; j<childArr.length; j++) { var dataArr = childArr[j].split(" "); var obj = {}; obj.marker = dataArr[0]; obj.value = (dataArr.length > 1) ? childArr[j].substr(childArr[j].indexOf(' ')+1) : ""; data.children.push(obj); } console.log(data.children); 

Try this code. Its working

Otherwise you can Check in JS Fiddle

Answer 4

Try using Array#forEach to iterate over all the array elements.Find the index of first space to separate keys and values of new objects.

  var array = [ 'ft Some older versions read, ', 'fqa And we are writing these things to you so that your joy will be complete. ', 'fqb ', 'f*' ]; var finalArray =[] ; array.forEach(function(value,index){ var firstSpace = value.indexOf(' '); if(firstSpace >=0){ var key = value.substr(0,firstSpace); var val = value.substr(firstSpace+1); } else{ var key = value; var val = ''; } var obj = {}; obj.marker = key; obj.value = val; finalArray.push(obj); }); console.log(finalArray); 

Answer 5

 var childArr = ['ft Some older versions read, ', 'fqa And we are writing these things to you so that your joy will be complete. ', 'fqb ', 'f*' ], data = { children: [] }; for (var j = 0; j < childArr.length; j++) { let split = childArr[j].split(" "); data.children.push({ marker: split[0], value: split.slice(1, -1).join(" ") }); } console.log(data.children);