JAVASCRIPT

loop through json object javascript

var p = {
    0: "value1",
    "b": "value2",
    key: "value3"
};

for (var key of Object.keys(p)) {
    console.log(key + " -> " + p[key])
}

loop over json javascript

var arr = [ {"id":"10", "class": "child-of-9"}, {"id":"11", "class": "child-of-10"}];
    
for (var i = 0; i < arr.length; i++){
  document.write("<br><br>array index: " + i);
  var obj = arr[i];
  for (var key in obj){
    var value = obj[key];
    document.write("<br> - " + key + ": " + value);
  }
}

json loop in js

var elements = document.querySelectorAll("a");
for (var i=0; i<elements.length; i++) {
   elements[i].style.color = "red";
}
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access json object in javascript loop

for (var key in data) {
   if (data.hasOwnProperty(key)) {
         alert(data[key].id);
   }
}