尝试访问json内容并以网格方式显示

Question

I have a JSON file having the following content.

{
    "rooms":[
      {
        "id": "1",
        "name": "living",
        "Description": "The living room",
         "backgroundpath":"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrsU8tuZWySrSuRYdz72WWFiYaW5PCMIwPAPr_xAIqL-FgmQ4qRw",       
         "Settings": {
          "Sources": [
            {
              "srcname":["DirectTV","AppleTV","Sonos"],
              "iconpath":["src/assets/images/ThemeEditorImgLib_iTVLight5d3a46c1ad5d7796.png","path2"]
            }
            ],
          "hex": "#000"
          }
      },
      {
        "id": "2",
        "name": "dining",
        "Description": "The Dining room",
        "backgroundpath":"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTjjspDkQEzbJJ1sSLS2ReWEx5P2ODNQmOtT572OIF9k3HbTGxV",
        "Settings": {
          "Sources": [
            {
              "srcname":["Climate","Shades"],
              "iconpath":["path1","path2"]
            }
            ],
          "hex": "#000"
        }
      }
]
}

My HTML file Has:

<div class="roww">
<div class="col-md-4 col-sm-6 col-12">

</div>
 </div>

I want to display my JSON content in the HTML. So far I have tried the following.

private initTileGrid():void
  {

    var col = document.getElementsByClassName("roww")[0];

    var outeritems=this.room_list.rooms;
   // console.log(outeritems);
    for(var i=0;i<outeritems.length;i++){
      var tile = document.getElementsByClassName("col-md-4 col-sm-6 col-12 tile no-padding")[0];
     var outerdiv = document.createElement("div");
      var h5 = document.createElement("h5");
      h5.innerHTML = outeritems[i].Description;
      outerdiv.appendChild(h5);
      var p = document.createElement("p");
      p.innerHTML = outeritems[i].name;
      outerdiv.appendChild(p);
     // col.appendChild(outerdiv);
      tile.appendChild(outerdiv);
      var inneritem=outeritems[i].Settings.Sources.srcname;
      console.log(inneritem);
      var innerdiv = document.createElement("div");
      for(var j=0;j<inneritem.length;j++)
      {
        console.log("hi")
        var h5inner = document.createElement("h5");
        h5inner.innerHTML = inneritem.srcname; 
        console.log(h5inner);
        innerdiv.appendChild(h5inner);
      }
tile.appendChild(innerdiv);
    }

I am able to display the description and name from the json but not able to fetch the list of sources.

My final solution should be a grid with number of tiles equal to the number of objects in the JSON, with each tile having a background image from the json and its content.

Can anybody tell me where I am going wrong? Any help appreciated!

Answer 1

I would suggest and recommend generating your dynamic HTML the following way with Template Literals .

Using Array#map , Array#join and Destructuring assignment

 const data = {"rooms":[{"id":"1","name":"living","Description":"The living room","backgroundpath":"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrsU8tuZWySrSuRYdz72WWFiYaW5PCMIwPAPr_xAIqL-FgmQ4qRw","Settings":{"Sources":[{"srcname":["DirectTV","AppleTV","Sonos"],"iconpath":["src/assets/images/ThemeEditorImgLib_iTVLight5d3a46c1ad5d7796.png","path2"]}],"hex":"#000"}},{"id":"2","name":"dining","Description":"The Dining room","backgroundpath":"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTjjspDkQEzbJJ1sSLS2ReWEx5P2ODNQmOtT572OIF9k3HbTGxV","Settings":{"Sources":[{"srcname":["Climate","Shades"],"iconpath":["path1","path2"]}],"hex":"#000"}}]} const res = data.rooms.map(({name, Description, Settings:{Sources}})=>{ const inner = Sources.map(({srcname})=>{ return srcname.map(src=>`<h5>${src}</h5>`).join(""); }).join(""); return ` <div> <h5>${Description}</h5> <p>${name}</p> <div class="inner"> ${inner} </div> </div> ` }).join(""); document.body.innerHTML = res; 

 body>div{background-color:lightgrey;padding:5px;margin-top:5px}body>div::before{content:"row"}body>div>*{margin-left:10px}h5{background-color:blue;color:white;padding:5px}h5::before{content:"outer h5:: "}p{background-color:purple;color:white;padding:5px}p::before{content:"p:: "}div.inner{padding:5px;background-color:grey}div.inner::before{content:"inner div"}div.inner>h5{background-color:green;color:white}div.inner>h5::before{content:"inner h5:: "} 

Unminified CSS:

 body > div { background-color: lightgrey; padding: 5px; margin-top: 5px; } body > div::before { content: "row"; } body > div > * { margin-left: 10px; } h5 { background-color: blue; color: white; padding: 5px; } h5::before { content: "outer h5:: " } p { background-color: purple; color: white; padding: 5px; } p::before { content: "p:: "; } div.inner { padding: 5px; background-color: grey; } div.inner::before { content: "inner div"; } div.inner > h5 { background-color: green; color: white; } div.inner > h5::before { content: "inner h5:: " } 

Answer 2

Your main problem starts at this line var inneritem=outeritems[i].Settings.Sources.srcname; Sources is an array so you need to access it like Sources[j] where j is a number within the arrays length.

The inner loop is fine, you just need to loop through Sources properly

I also had to add classes to the tiles class to match your getElementsByClassName query

 const room_list = { "rooms": [{ "id": "1", "name": "living", "Description": "The living room", "backgroundpath": "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrsU8tuZWySrSuRYdz72WWFiYaW5PCMIwPAPr_xAIqL-FgmQ4qRw", "Settings": { "Sources": [{ "srcname": ["DirectTV", "AppleTV", "Sonos"], "iconpath": ["src/assets/images/ThemeEditorImgLib_iTVLight5d3a46c1ad5d7796.png", "path2"] }], "hex": "#000" } }, { "id": "2", "name": "dining", "Description": "The Dining room", "backgroundpath": "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTjjspDkQEzbJJ1sSLS2ReWEx5P2ODNQmOtT572OIF9k3HbTGxV", "Settings": { "Sources": [{ "srcname": ["Climate", "Shades"], "iconpath": ["path1", "path2"] }], "hex": "#000" } } ] } var col = document.getElementsByClassName("roww")[0]; var outeritems = room_list.rooms; // console.log(outeritems); for (var i = 0; i < outeritems.length; i++) { var tile = document.getElementsByClassName("col-md-4 col-sm-6 col-12 tile no-padding")[0]; var outerdiv = document.createElement("div"); var h5 = document.createElement("h5"); h5.innerHTML = outeritems[i].Description; outerdiv.appendChild(h5); var p = document.createElement("p"); p.innerHTML = outeritems[i].name; outerdiv.appendChild(p); // col.appendChild(outerdiv); tile.appendChild(outerdiv); var inneritems = outeritems[i].Settings.Sources var innerdiv = document.createElement("div"); for (var j = 0; j < inneritems.length; j++) { var inneritem = inneritems[j]; var h5inner = document.createElement("h5"); h5inner.innerHTML = inneritem.srcname; innerdiv.appendChild(h5inner); } tile.appendChild(innerdiv); } 

 <div class="roww"> <div class="col-md-4 col-sm-6 col-12 tile no-padding"> </div> </div> 

Answer 3

Try this:

var col = document.getElementsByClassName("roww")[0];

var outeritems = this.room_list.rooms;
// console.log(outeritems);
for (var i = 0; i < outeritems.length; i++) {
  var tile = document.getElementsByClassName("col-md-4")[0];
  var outerdiv = document.createElement("div");
  var h5 = document.createElement("h5");
  h5.innerHTML = outeritems[i].Description;
  outerdiv.appendChild(h5);
  var p = document.createElement("p");
  p.innerHTML = outeritems[i].name;
  outerdiv.appendChild(p);
  // col.appendChild(outerdiv);
  tile.appendChild(outerdiv);
  outeritems[i].Settings.Sources.forEach(source => {

    var inneritem = source.srcname;
    console.log(inneritem);
    var innerdiv = document.createElement("div");
    for (var j = 0; j < inneritem.length; j++) {
      console.log("hi")
      var h5inner = document.createElement("h5");
      h5inner.innerHTML = inneritem[j];
      console.log(h5inner);
      innerdiv.appendChild(h5inner);
    }
    tile.appendChild(innerdiv);
  });
}

}

You need to loop through the Settings.Sources and srcname because all of them are arrays

Answer 4

V_Stack as discussed, this is just the tweak I would do to the sources section of the JSON, moving forward it will make working with a source easier, especially if you add additional properties. Note it is an array of self contained objects now.

 { "rooms": [{ "id": "1", "name": "living", "Description": "The living room", "backgroundpath": "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrsU8tuZWySrSuRYdz72WWFiYaW5PCMIwPAPr_xAIqL-FgmQ4qRw", "Settings": { "Sources": [{ "srcname": "DirectTV", "iconpath": "src/assets/images/ThemeEditorImgLib_iTVLight5d3a46c1ad5d7796.png" }, { "srcname": "AppleTV", "iconpath": "path2" }, { "srcname": "Sonos", "iconpath": "" } ], "hex": "#000" } }, { "id": "2", "name": "dining", "Description": "The Dining room", "backgroundpath": "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTjjspDkQEzbJJ1sSLS2ReWEx5P2ODNQmOtT572OIF9k3HbTGxV", "Settings": { "Sources": [{ "srcname": "Climate", "iconpath": "path1" }, { "srcname": "Shades", "iconpath": "path2" } ], "hex": "#000" } } ] }