如何在html img标签中使用Java字符串图像对象-有可能吗？

Question

I am currently generating a javascript image from a base64 string. I am doing something like this

function generateHTML() 
{
  var image = new Image();
  var src = "data:image/jpeg;base64," + picString;
  image.src = src;
  ......
}

Now I know i can do something like this

document.body.appendChild(image);

but that is not what I want. In my javascript function I am returning back an html string. My question is if it is possible for me to use the javascript image with a html statement like this

<img src=image alt="Mountain View" style="width:304px;height:228px;">

Answer 1

You mean like this, where it uses the img id to append the src?

 function generateHTML() { var picString = "iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="; var image = new Image(); var src = "data:image/jpeg;base64," + picString; document.getElementById('img').src = src; } generateHTML(); 

 <img id="img" alt="Mountain View" title="Red Dot" /> 

Answer 2

If you are looking to get the html string of an element and not looking to append it to the current document, use outerHTML on the Image instance you created.

function generateHTML() {
  var image = new Image();
  var src = "data:image/jpeg;base64," + picString;
  image.src = src;
  return image.outerHTML;
}