jQuery and replace does not work in IE : I want to replace all dimensions 375x270 and 250x180 with 750x1280 in this code-snippet:

    <img class="j-webview-product-image" imgsrc="
    https://image.jimcdn.com/app/cms/image/transf/dimension=375x270:format=jpg/path/sbcfc830c2d85c206/image/i547767095dfc0c2d/version/1475157973/image.jpg 375w,  
    https://image.jimcdn.com/app/cms/image/transf/dimension=250x180:format=jpg/path/sbcfc830c2d85c206/image/i547767095dfc0c2d/version/1475157973/image.jpg 250w"
    sizes="(max-width: 480px) 100vw, 250px" src="
    https://image.jimcdn.com/app/cms/image/transf/dimension=250x180:format=jpg/path/sbcfc830c2d85c206/image/i547767095dfc0c2d/version/1475157973/image.jpg" 
    alt="" title="" data-pin-nopin="true">

Here´s my fiddle: http://jsfiddle.net/andreaszeike/rtywrt9k/4/
- the code works well on all browsers except IE...

Thank´s for your suggestions! BR, az


