Based on JavaScript code implementation by clicking on the picture to display the original picture _javascript tips

Nonsense not to say, directly to everyone paste JS implementation Click the image to display the original picture code, the specific code as follows:

function DrawImage (IMGD) {
  var image = new Image ();
  IMAGE.SRC=IMGD.SRC;
  var width = $ (IMGD). attr ("width");
  var height = $ (IMGD). attr ("height");
  if (width >100 && height>80) {
    imgd.width=100; 
    imgd.height=80;
    imgd.alt=image.width+ "x" +image.height;
  } else{
    if (image.width>0 && image.height>0) {
      flag=true;
      if (image.width>300 | | image.height>200) {
        imgd.width=image.width/2; 
        IMGD.HEIGHT=IMAGE.HEIGHT/2;
        imgd.alt=image.width+ "x" +image.height;
      } else{
        imgd.width=image.width;  
        Imgd.height=image.height;
        imgd.alt=image.width+ "x" +image.height
      }}
    }

Below share a paragraph about JS upload picture in time to preview

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">