punctuation marks in javascript

can you guys plese help me to correct the punctuation marks in the javascript below? Found error when i paste in visual studio. I'm not familiar with javascript! Thanks guy...

function showLocalImage(imgname) {
  imgname = imgname.replace(/\\/g,”/”);
  imgname = imgname.replace(/\’/g,”\\’”);
  content = “<img src=\”" + String(imgname) + “\” border=\”0\” height=\”150\” weight=\”150\”>”;
  eval(‘document.getElementById(“imagepreview”).innerHTML=\” + content +”‘”);
  document.getElementById.imagepreview.style.visibility =’visib开发者_开发问答le’;
}

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This is because some of your quote characters are actually from a different character encoding, Use the following code:

function showLocalImage(imgname) {
  imgname = imgname.replace(/\\/g,"/");
  imgname = imgname.replace(/\’/g,"\\'");
  content = "<img src=\"" + imgname + "\" border=\"0\" height=\"150\" weight=\"150\">";
  var image_preview = document.getElementById("imagepreview");
  image_preview.innerHTML = content;
  image_preview.style.visibility = 'visible';
}

A couple of things:

• You should reuse DOM result sets and elements as much as possible to avoid having to run a query against the DOM every time you need to reference an element or set of elements.

• You should really try to avoid using the eval function as much as possible.

  eval == EVIL

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You seem to use wrong quote characters (” or ‘). Replace them with " or ' and you'll be good. Use an ascii text editor, not a word processor for typing.

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You should avoid eval, and declare the content variable, as well as declare a reference to the imagepreview element:

function showLocalImage(imgname) {
  imgname = imgname.replace(/\\/g,"/");
  imgname = imgname.replace(/\'/g,"\\'"); //Is this really necessary?
  var content = "<img src=\"" + imgname + "\" border=\"0\" height=\"150\" weight=\"150\">";
  var img = document.getElementById("imagepreview");
  img.innerHTML = content;
  img.style.visibility ='visible';
}