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Javascript - Using condition with object and array


By : user2176351
Date : October 14 2020, 02:21 PM
I wish this help you I receive a data value from a API, and I want to make a condition to deal with it. Sometimes it can comes as an array or object. I will use a simple example. , A simple OR (||) operator is pretty idiomatic JavaScript:
code :
(data.arr || data).map(i => ++i);
let data, result;

data = [1, 2, 3];

result = (data.arr || data).map(i => ++i);
console.log(result);

data = {
  arr: [1, 2, 3]
}

result = (data.arr || data).map(i => ++i);
console.log(result);


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Add dynamic Parameter to Javascript Array Object by condition


By : victorvicpal
Date : March 29 2020, 07:55 AM
help you fix your problem I want to add the parameter to the array object url depends on some function value.
code :
Define sections array before accessing it inside your function.

var sections = [
      {
        url: ""
      }
    ];
var change_lookup_number = function() {
      var type = document.getElementById('type_number').value;
      if (type == 1) {
        sections[0].url = "/hello/lookup/modelname.js?columns[column_id]=1"
      } else {
        sections[0].url = "/hello/lookup/modelname.js?columns[column_id]=2"
      }
    };

change_lookup_number();

Split an object into array of objects based on a condition in JavaScript


By : ranjed khan
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Here is a bunch of code you can try.
1) Iterate over oldObject and get the name of the property.
code :
var oldObject = {"Chicago, IL:Myrtle Beach, SC": 0.005340186908091907,
          "Portsmouth, NH:Rock Hill, SC": 0.0063224791225441205, 
          "Columbia, SC:Laconia, NH": 0.006360767389277389, 
          "Council Bluffs, IA:Derry, NH": 0.0016636141225441225};
var newArray = [];

for (object in oldObject) {
  var thisObjectName = object;
  var thisObjectAsArray = thisObjectName.split(':');
  var newObject = {
    'city': '',
    'similar_to': ''
  };
  thisObjectAsArray.forEach(function(element,index,array) {
      var thisObjectNameAsArray = element.split(',');
      var thisObjectNameCity = thisObjectNameAsArray[0];
      if(index===0) {
         newObject.city = thisObjectNameCity;
      } else if(index===1) {
         newObject.similar_to = thisObjectNameCity;
      }
  });
  newArray.push(newObject);
}
console.log(newArray);

JavaScript - Remove object from array when the condition is met


By : ZEGZAG Global
Date : March 29 2020, 07:55 AM
it helps some times filter() returns a new array. From the docs:
code :
var arr = [{"userId":"12j219","name":"Harry"},{"userId":"232j32", "name":"Nancy"}]
arr = arr.filter((user) => {
    return user.userId !== '12j219'
})

Check and convert duplicate object with condition in javascript array


By : Gabor Gajdos
Date : March 29 2020, 07:55 AM
should help you out You can use reduce method by passing a callback provided function as argument.
code :
var array = [ { key: 'NAME', value: 'JAY'},
     { key: 'AGE', value: '65'},
     { key: 'YEAR', value: '2017'},
     { key: 'PLACE', value: 'Delhi'},
     { key: 'PLACE', value: 'Mumbai'},
     { key: 'YEAR', value: '2018'}
]

let result = array.reduce(function(arr, item){
  let foundElem = arr.find(elem => elem.key === item.key);
  if(!foundElem)
     arr.push({key : item.key, value : [item.value]});  
  else
    foundElem.value.push(item.value);
  return arr;
}, []);
console.log(result);

JavaScript, forEach array of object stop at condition


By : R.C.
Date : March 29 2020, 07:55 AM
it helps some times You could take Array#some and return true to stop the iteration.
code :
columns.some((col, i) => {
    if (col.name !== keys[i]) {
        console.log('yes, I entered the if statement')
        //do something here
        return true;
    }
});
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