javascript - 尝试访问 json 内容并以网格方式显示

Question

我有一个包含以下内容的 JSON 文件。

{
    "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"
        }
      }
]
}

我的 HTML 文件有:

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

</div>
 </div>

我想在 HTML 中显示我的 JSON 内容。到目前为止，我已经尝试了以下。

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);
    }

我能够显示来自 json 的描述和名称，但无法获取来源列表。

我的最终解决方案应该是一个网格，其中的图 block 数量等于 JSON 中的对象数量，每个图 block 都有一个来自 json 及其内容的背景图像。

谁能告诉我哪里出错了？任何帮助表示赞赏!

Answer 1

我建议并推荐使用Template Literals 以下列方式生成您的动态HTML .

使用 Array#map , Array#join和 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:: "}

未压缩的 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:: "
}