you get the inline style
because you do not set
window.getComputedStyle you can get the final calculated style
take a look at the print, but the data is empty, because
< div id= "fade-obj" style= "width:300px;height:300px;background:-sharp000" > < / div >
there is no opacityvalue set in style
because there are only inline styles on obj.style,
you should write
window.getComputedStyle(obj,null).getPropertyValue("opacity") obj.style gets the declared object key value of the DOM element CSS style.
style can only get the specific value of the inline style, but the internal and external styles cannot get the specific value.
obj.style is readable and writable. When you read obj.style, before writing obj.style in JS code, you will get a null value.
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