Difference Between Relative and Absolute

Difference between style = position:absolute and style = position:relative

Absolute positioning means that the element is taken completely out of the normal flow of the page layout. As far as the rest of the elements on the page are concerned, the absolutely positioned element simply doesn't exist. The element itself is then drawn separately, sort of "on top" of everything else, at the position you specify using the left, right, top and bottom attributes.

Using the position you specify with these attributes, the element is then placed at that position within its last ancestor element which has a position attribute of anything other than static (page elements default to static when no position attribute specified), or the document body (browser viewport) if no such ancestor exists.

For example, if I had this code:

<body>
  <div style="position:absolute; left: 20px; top: 20px;"></div>
</body>

...the <div> would be positioned 20px from the top of the browser viewport, and 20px from the left edge of same.

However, if I did something like this:

 <div id="outer" style="position:relative">
   <div id="inner" style="position:absolute; left: 20px; top: 20px;"></div>
 </div>

...then the inner div would be positioned 20px from the top of the outer div, and 20px from the left edge of same, because the outer div isn't positioned with position:static because we've explicitly set it to use position:relative.

Relative positioning, on the other hand, is just like stating no positioning at all, but the left, right, top and bottom attributes "nudge" the element out of their normal layout. The rest of the elements on the page still get laid out as if the element was in its normal spot though.

For example, if I had this code:

<span>Span1</span>
<span>Span2</span>
<span>Span3</span>

...then all three <span> elements would sit next to each other without overlapping.

If I set the second <span> to use relative positioning, like this:

<span>Span1</span>
<span style="position: relative; left: -5px;">Span2</span>
<span>Span3</span>

...then Span2 would overlap the right side of Span1 by 5px. Span1 and Span3 would sit in exactly the same place as they did in the first example, leaving a 5px gap between the right side of Span2 and the left side of Span3.

Hope that clarifies things a bit.

What is the difference between relative and absolute tags of div element?

Absolute positioning positions an element relitive to the first parent that has a position oher than static, and removes the element from the document flow. Relative positioning allows you to move an element from its "normal" positon, leaving the space where it was originally in the content.

Relative is generally for small adjusents in page layout, absolute is for exact positioning.

Position Relative vs Absolute?

Absolute CSS Positioning

position: absolute;

Absolute positioning is the easiest to understand. You start with the CSS position property:

position: absolute;

This tells the browser that whatever is going to be positioned should be removed from the normal flow of the document and will be placed in an exact location on the page. It won't affect how the elements before it or after it in the HTML are positioned on the Web page however it will be subject to it's parents' positioning unless you override it.

If you want to position an element 10 pixels from the top of the document window, you would use the top offset to position it there with absolute positioning:

position: absolute;
top: 10px;

This element will then always display 10px from the top of the page regardless of what content passes through, under or over the element (visually).

The four positioning properties are:

top
right
bottom
left

To use them, you need to think of them as offset properties. In other words, an element positioned right: 2px is not moved right 2px. It's right side is offset from the right side of the window (or its position overriding parent) by 2px. The same is true for the other three.

Relative Positioning

position: relative;

Relative positioning uses the same four positioning properties as absolute positioning. But instead of basing the position of the element upon the browser view port, it starts from where the element would be if it were still in the normal flow.

For example, if you have three paragraphs on your Web page, and the third has a position: relative style placed on it, its position will be offset based on its current location-- not from the original sides of the view port.

Paragraph 1.

Paragraph 2.

Paragraph 3.

In the above example, the third paragraph will be positioned 3em from the left side of the container element, but will still be below the first two paragraphs. It would remain in the normal flow of the document, and just be offset slightly. If you changed it to position: absolute;, anything following it would display on top of it, because it would no longer be in the normal flow of the document.

Notes:

the default width of an element that is absolutely positioned is the width of the content within it, unlike an element that is relatively positioned where it's default width is 100% of the space it can fill.
You can have elements that overlap with absolutely positioned elements, whereas you cannot do this with relatively positioned elements (natively i.e without the use of negative margins/positioning)

lots pulled from: this resource

Difference between Relative path and absolute path in javascript

What is the difference between Relative path and absolute path?

One has to be calculated with respect to another URI. The other does not.

Is there any performance issues occures for using these paths?

Nothing significant.

We will get any secure for the sites ?

Is there any way to converting absolute path to relative

In really simplified terms: Working from left to right, try to match the scheme, hostname, then path segments with the URI you are trying to be relative to. Stop when you have a match.

What is the difference between absolute and relative SVG path?

With relative (lower case) commands, the coordinates are calculated relative to the endpoint of the last path segment.

So in the case of your path:

the path passes through the coordinates as listed.

However with relative commands you would get the following actual coordinates:

              Actual         How this was calculated
             --------------- --------------------------------------
m 150 0       (150, 0)       (0 + 150, 0 + 0)
l 75 200      (225, 200)     (150 + 75, 0 + 200)     (ie. lastX + thisX, lastY + thisY)
l 225 200     (450, 400)     (225 + 225, 200 + 200)
z                            (Z and z have identical behaviour)

What is the difference between an absolute and a relative path?

Say you were giving directions to a spot. You have two methods you can describe getting to the location:

Relative to where you stand,
Relative to a landmark.

Both get you to the same location, but the former doesn't always work ("take a left, then a right, go through two lights then take another right" wouldn't necessarily work from the next town over, but works from where you stand). That's essentially the difference.

If you have C:\Windows\System32, that's an absolute path. If you have Windows\System32, it will only work so long as you're starting from C:\. If you start in C:\Program Files you would need a ..\ to get there correctly.

However, no matter where you are on the hard drive, C:\Windows\System32\ is a definitive way to get to that folder.