使用 JS 更新 w3-import-html

Question

<div id="import" includeHTML="page.html"></div>
function getInclude() { 
    var x = document.getElementById("import").includeHTML; //returns 'undefined'
    alert(x);
}
function modInclude() { 
    document.getElementById("import").includeHTML = "page2.html"; //does nothing and FF's console outputs nothing
}

我正在使用W3的导入HTML进行一个项目，我想使用Javascript更改导入的页面。没问题，我认为这与更改图像来源相同。

我尝试的语法不起作用。我做了一些调查，发现该属性本身返回"undefined"，考虑到它像它应该的那样导入页面，这有点奇怪。

Answer 1

可能你可以使用：

document.getElementById("import").setAttribute("w3-include-html", "contentYouWant.html");

编辑：我采用了w3-html-include的w3文档，并添加了一个简单的片段，您可以检查以了解真正发生的事情。代码段仅更改属性和警报，以确保其已更改。奇怪的是：'D函数来自官方文档。

<script>
function includeHTML() {
  var z, i, elmnt, file, xhttp;
  /*loop through a collection of all HTML elements:*/
  z = document.getElementsByTagName("*");
  for (i = 0; i < z.length; i++) {
    elmnt = z[i];
    /*search for elements with a certain atrribute:*/
    file = elmnt.getAttribute("w3-include-html");
    if (file) {
      /*make an HTTP request using the attribute value as the file name:*/
      xhttp = new XMLHttpRequest();
      xhttp.onreadystatechange = function() {
        if (this.readyState == 4) {
          if (this.status == 200) {elmnt.innerHTML = this.responseText;}
          if (this.status == 404) {elmnt.innerHTML = "Page not found.";}
          /*remove the attribute, and call this function once more:*/
          elmnt.removeAttribute("w3-include-html");
          includeHTML();
        }
      }      
      xhttp.open("GET", file, true);
      xhttp.send();
      /*exit the function:*/
      return;
    }
  }
};
</script>
<div id="inc" w3-include-html="page1.html"></div>
 <script>
includeHTML();
alert("Includes: " + document.getElementById("inc").getAttribute("w3-include-html"));
document.getElementById("inc").setAttribute("w3-include-html", "page2.html");
alert("Includes: " + document.getElementById("inc").getAttribute("w3-include-html"));
</script> 

干杯