Move images PNG to SVG

Author: iliakan

1-js/01-getting-started/1-intro/article.md

@@ -75,7 +75,7 @@ Examples of such restrictions include:
     This limitation is, again, for the user's safety. A page from `http://anysite.com` which a user has opened must not be able to access another browser tab with the URL `http://gmail.com` and steal information from there.
 - JavaScript can easily communicate over the net to the server where the current page came from. But its ability to receive data from other sites/domains is crippled. Though possible, it requires explicit agreement (expressed in HTTP headers) from the remote side. Once again, that's a safety limitation.
 
-![](limitations.png)
+![](limitations.svg)
 
 Such limits do not exist if JavaScript is used outside of the browser, for example on a server. Modern browsers also allow plugin/extensions which may ask for extended permissions.
 

1-js/01-getting-started/1-intro/limitations.png

@@ -99,7 +99,7 @@ We can easily grasp the concept of a "variable" if we imagine it as a "box" for
 
 For instance, the variable `message` can be imagined as a box labeled `"message"` with the value `"Hello!"` in it:
 
-![](variable.png)
+![](variable.svg)
 
 We can put any value in the box.
 
@@ -116,7 +116,7 @@ alert(message);
 
 When the value is changed, the old data is removed from the variable:
 
-![](variable-change.png)
+![](variable-change.svg)
 
 We can also declare two variables and copy data from one into the other.
 

1-js/01-getting-started/1-intro/limitations.svg

@@ -8,7 +8,7 @@ Using the `if..else` construct, write the code which asks: 'What is the "officia
 
 If the visitor enters "ECMAScript", then output "Right!", otherwise -- output: "Didn't know? ECMAScript!"
 
-![](ifelse_task2.png)
+![](ifelse_task2.svg)
 
 [demo src="ifelse_task2"]