CODEWITHSUNDEEP
javascriptregex
SPG
SPG

Reputation: 6197

javascript regular expression

I want to match some links from a web content. I know I can use file_get_contents(url) to do this in php. How about in javascript? For regular expression, like 

<a href="someurl/something" id="someid">contents</a>

How can I use js regular expression to match this (match only once, do not greedy). I try to use this 

/^\<a href=\"someurl\/something\" id=\"someid\"\>(+?)\<\/a\>$/

but it doesn't work. Can someone help? Thanks!

Upvotes: 0

Views: 373

Answers (5)

Aziz Shaikh
Aziz Shaikh

Reputation: 16524

DOM and jQuery suggestions are better but if you still want to use regex then try this:

/^<a href=".*?" id=".*?">(.*?)<\/a>$/

Upvotes: 0

Monday
Monday

Reputation: 1413

Try this~

try {
    boolean foundMatch = subjectString.matches("(?im)<a[^>]*href=(\"[^\"]*\"|'[^']*'|[^\\s>]*)[^>]*>.*?</a>");
} catch (PatternSyntaxException ex) {
    // Syntax error in the regular expression
}

Match double quotation marks,single quotes and empty.

<a href="someurl/something" id="someid">contents</a>
<a href='someurl/something' id='someid'>contents</a>
<a href=someurl/something id=someid>contents</a>

Upvotes: 0

zatatatata
zatatatata

Reputation: 4821

You might as well create the elements with jQuery

var elements = $(html);
var links = elements.find('a');
links.each(function(i, link){
    //Do the regexp matching in here if you wish to search for specific urls only
});

In bigger documents, using the DOM is way quicker than regexping the whole thing as text.

Upvotes: 0

Amber
Amber

Reputation: 526533

I'd highly recommend using a library like jQuery to get the element, and then get the contents via a .text() call. It's much more simple and reliable than trying to parse HTML with regex.

Upvotes: 3

Delan Azabani
Delan Azabani

Reputation: 81384

You should know that parsing HTML with regex is not the optimal way to solve this problem, and if you have access to a live DOM of the page, you should use DOM methods instead. As in, you should use

document.getElementById('someid').innerHTML // this will return 'contents'

instead of a regex.

Upvotes: 4

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