Difference between Relative path and absolute path in javascript

Question

Have small clarifications   As of my knowledge these are the relative and absolute paths   Completely relative   lt img src  kitten png   gt     Absolute in all respects   lt img src  http   www foo com images kitten png  gt    What is the difference between Relative path and absolute path   Is there any performance issues occur for using these paths   Will we get any secure for the sites    Is there any way of converting absolute path to relative

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The path with reference to root directory is called absolute   The path with reference to current directory is called relative

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Relative Paths  A relative path assumes that the file is on the current server   Using relative paths allows you to construct your site offline and fully test it before uploading it   For example   php webct itr index php     Absolute Paths  An absolute path refers to a file on the Internet using its full URL  Absolute paths tell the browser precisely where to go    For example   http   www uvsc edu disted php webct itr index php  Absolute paths are easier to use and understand   However  it is not good practice on your own website   For one thing  using relative paths allows you to construct your site offline and fully test it before uploading it   If you were to use absolute paths you would have to change your code before uploading it in order to get it to work  This would also be the case if you ever had to move your site or if you changed domain names     Reference  http   openhighschoolcourses org mod book tool print index php id 12503

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Completely relative    lt img src  kitten png   gt    this is a relative path indeed   Absolute in all respects    lt img src  http   www foo com images kitten png   gt    this is a URL  and it can be seen in some way as an absolute path  but it s not representative for this matter   The difference between relative and absolute paths is that when using relative paths you take as reference the current working directory while with absolute paths you refer to a certain  well known directory  Relative paths are useful when you make some program that has to use resources from certain folders that can be opened using the working directory as a starting point   Example of relative paths    image png  which is the equivalent to   image png  in Windows  or   image png  anywhere else    The   explicitly specifies that you re expressing a path relative to the current working directory  but this is implied whenever the path doesn t begin at a root directory  designated with a slash   so you don t have to use it necessarily  except in certain contexts where a default directory  or a list of directories to search  will be applied unless you explicitly specify some directory      images image2 jpg  This way you can access resources from directories one step up the folders tree    The     means you ve exited the current folder  entering the directory that contains both the working and images folders    Again  use   in Windows and   anywhere else    Example of absolute paths    D  documents something doc E  music good music mp3   and so on

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I think this example will help you in understanding this more simply   Path differences in Windows  Windows absolute path C  Windows calc exe  Windows non absolute path  relative path  calc exe  In the above example  the absolute path contains the full path to the file and not just the file as seen in the non absolute path  In this example  if you were in a directory that did not contain  calc exe  you would get an error message  However  when using an absolute path you can be in any directory and the computer would know where to open the  calc exe  file   Path differences in Linux  Linux absolute path  home users c computerhope public html cgi-bin  Linux non absolute path  relative path   public html cgi-bin  In these example  the absolute path contains the full path to the cgi-bin directory on that computer  How to find the absolute path of a file in Linux Since most users do not want to see the full path as their prompt  by default the prompt is relative to their personal directory as shown above  To find the full absolute path of the current directory use the pwd command   It is a best practice to use relative file paths  if possible    When using relative file paths  your web pages will not be bound to your current base URL  All links will work on your own computer  localhost  as well as on your current public domain and your future public domains

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Imagine you have a window open on http   www foo com bar page html In all of them  HTML  Javascript and CSS    opened url   http   www foo com bar page html base path   http   www foo com bar  home path   http   www foo com   kitten png   Home path kitten png kitten png   Base path kitten png   In HTML and Javascript  the base path is based on the opened window  In big javascript projects you need a BASEPATH or root variable to store the base path occasionally   like this   In CSS the opened url is the address of which your  css is stored or loaded  its not the same like javascript with current opened window in this case   And for being more secure in absolute paths it is recommended to use    instead of http    for possible future migrations to https     In your own example  use it this way    lt img src    www foo com images kitten png  gt

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Going Relative    You could download a self-contained directory  maybe a zipped file  and open links from an html or xml locally without need to reach the server  This increases speed performance significantly  specially if you have to deal with a slow network    Going Absolute    You would have to swallow the network speed  but in terms of security you    could prevent certain users to see certain files or increase network traffic if  and only if     that is good for you

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If you use the relative version on http   www foo com abc your browser will look at http   www foo com abc kitten png for the image and would get 404 - Not found

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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     No     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

[javascript] Difference between Relative path and absolute path in javascript

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