Parse JSON with JavaScript to build a HTML string

Question

I currently have built an API which posts JSON strings of objects. A simple example of the JSON is:

[ {
  "id" : 0,
  "name" : "test SAMPLE Att1 name",
  "attributes" : [ {
    "id" : -1,
    "name" : "AttKey1",
    "value" : "AttValue1"
  }, {
    "id" : -1,
    "name" : "AttKey2",
    "value" : "AttValue2"
  } ]
} ]

My issue lies in my client code here:

function loadSamples() {
  $("#content").children().remove();
  $.getJSON("/api/samples", function (data) {
    $.each(data, function (key, val) {
      $("<tr><td>" + val.id + "</td><td>" + val.name + "</td><td>" + val.attributes + "</td>" +
        "</tr>").appendTo("#content");
    });
    initCallbacks();
  });
}

I am iterating through each sample I send (in this case only one, and appending the field values to the HTML string. How can I iterate through attributes and append each attribute.key and attribute.value to the string?

A picture of the current problem:

How do you want to format it? val.attributes.reduce(function(pv,v){return ( pv ? pv + ',' : pv ) + v.name + '=' + v.value;}, ''); — George Houpis
– George Houpis, Commented Jan 25, 2016 at 21:23

Viktor Kukurba · Accepted Answer · 2016-01-25 21:29:22Z

3

You can try to use this code instead of val.attributes

$.map(val.attributes, function(item){
   return item.key + ':' +item.value;
}).join(',')

answered Jan 25, 2016 at 21:29

Viktor Kukurba

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Comments

Michał Perłakowski · Accepted Answer · 2016-01-25 21:22:55Z

3

Use another loop, iterate through all attributes, build an array of attributes in format "property: value" and then append joined array to HTML:

$.each(data, function (key, val) {
  var attributes = [];
  for (var prop in val.attributes) {
    var value = val.attributes[prop];
    attributes.push(prop + ": " + value);
  }
  $("<tr><td>" + val.id + "</td><td>" + val.name +
    "</td><td>" + attributes.join(",") + "</td>" + "</tr>").appendTo("#content");
});

answered Jan 25, 2016 at 21:22

Michał Perłakowski

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Comments

pid · Accepted Answer · 2016-01-25 21:29:48Z

3

If you feel nerdy you can just serialize the object back into a JSON string like this:

... + JSON.stringify(val.attributes) + ...

It is recursive, has a standard syntax (JSON) and doesn't require any support function or additional code at all.

edited Jan 25, 2016 at 21:29

answered Jan 25, 2016 at 21:24

pid

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