JavaScript Regular expression replace picture address img Tag

The solution that comes to mind is:

The code is as follows	Copy Code
Content.replace (/]*src=[']] ([^ ' "]+) [^>]*>/gi, function (match) { Console.log (match); }); The output results are:

Get the entire IMG tag, but I'm expecting a URL in src so I can just return the new address in the function (match).
So, it's stuck here ...

Later, through google search keyword "javascript replace callback", found in StackOverflow "replace callback function with matches" to know the function (match) There are other parameters

Then, the problem is solved by changing to the following code.

The code is as follows	Copy Code
Content.replace (/]*src=[']] ([^ ' "]+) [^>]*>/gi, function (match, capture) { Console.log (Capture); }); Output results: /images/logo.gif

Later, Baidu and find a more good example

The code is as follows

Copy Code

<script type= "Text/javascript" > The idea is divided into two steps: the author (yanue). 1, matching out the image of the IMG tag (that is, match all the pictures), filter other unwanted characters 2. From the matching result (in the IMG tag) loop match out the picture address (that is, SRC attribute) var str = "This is test string 123" and " 33! Matching picture (g means match all results I indicates case-sensitive) var Imgreg =/|/>)/gi; Match src attribute var srcreg =/src=[' "]? ([^'"]*) [' "]?/i; var arr = Str.match (Imgreg); Alert (' array of all successfully matched pictures: ' +arr '); for (var i = 0; i < arr.length; i++) { var src = arr[i].match (srcreg); Get Picture Address if (Src[1]) { Alert (' Matching picture address ' + (i+1) + ': ' +src[1]); } Of course you can also replace the SRC attribute if (Src[0]) { var t = src[0].replace (/src/i, "href"); Alert (t); } } </script>