Question

我想从我的html文件中访问DOM并获取elementbyid（get image.src），如下所示：

<!DOCTYPE html> 
<html> 
  <head> 
    <meta charset="UTF-8"> 
    <title>Diagram</title>
    <script> 
      function generatePNG (oViewer) {  
        var sResultd = new Date(); 
        var h = d.getHours(); 
        var m = d.getMinutes(); 
        var s = d.getSeconds(); 

        var sFileName = "diagram" + h.toString() + m.toString() + s.toString() + ".png"; 

        var sResultBlob = oViewer.generateImageBlob(function(sBlob) { 
          b = 64; 
          var reader = new window.FileReader(); 
          reader.readAsDataURL(sBlob); 
          reader.onloadend = function() { 
            base64data = reader.result; 
            var image = document.createElement('img'); 
            image.setAttribute("id", "GraphImage"); 
            image.src = base64data; 
            document.body.appendChild(image);
          }  
        }, "image/png", oImageOptions); 
        return sResult; 
      } 
    </script> 
  </head> 
  <body > 
    <div id="diagramContainer"></div> 
  </body> 
</html>

我想从我的html文件中获取 image.src ，我该如何使用javascript进行此操作？

Answer 1

document.getElementById('your_image_id').getAttribute('src')

按ID访问DOM和获取元素

1 个答案: