iterating through object

by

You use a for..in loop for this. Be sure to check if the object owns the properties or all inherited properties are shown as well. An example is like this:

var obj = {a: 1, b: 2};
for (var key in obj) {
  if (obj.hasOwnProperty(key)) {
    var val = obj[key];
    console.log(val);
  }
}

Or if you need recursion to walk through all the properties:

var obj = {a: 1, b: 2, c: {a: 1, b: 2}};
function walk(obj) {
  for (var key in obj) {
    if (obj.hasOwnProperty(key)) {
      var val = obj[key];
      console.log(val);
      walk(val);
    }
  }
}
walk(obj);

More Related Contents:

  1. Count the recurrence of a word
  2. Dynamically access object property using variable
  3. Why is null an object and what’s the difference between null and undefined?
  4. Remove array element based on object property
  5. How to check if object property exists with a variable holding the property name?
  6. Print content of JavaScript object? [duplicate]
  7. Adding custom properties to a function
  8. Is there any way to use a numeric type as an object key?
  9. Why do empty JavaScript arrays evaluate to true in conditional structures?
  10. javascript pass object as reference
  11. How to determine whether an object has a given property in JavaScript
  12. How can I find the keys of an object?
  13. how to access object property using variable [duplicate]
  14. What is an “internal slot” of an object in JavaScript?
  15. break array of objects into separate arrays based on a property
  16. In JavaScript, is chained assignment okay?
  17. ES6 destructuring object assignment function parameter default value
  18. Encoding Javascript Object to Json string
  19. Get all instances of class in Javascript
  20. Filtering array of objects by searching nested object properties
  21. Dynamic deep setting for a JavaScript object [duplicate]
  22. getting the last item in a javascript object
  23. Sort Keys in Javascript Object
  24. How to prevent automatic sort of Object numeric property?
  25. Javascript / Chrome – How to copy an object from the webkit inspector as code
  26. How to remove undefined and null values from an object using lodash?
  27. What’s the JavaScript’s Object.prototype behavior?
  28. Using non-ASCII character as JavaScript object key [duplicate]
  29. Difference between ( for… in ) and ( for… of ) statements?
  30. Find object having maximum value for the `id` property in an array of objects

Leave a Comment