Use the global flag, `g`:

    foo.replace(/&lt;br&gt;/g,&quot;\n&quot;)

JS idiom for non-Regexp global replace:

    input_content.split(&#39;&lt;br&gt;&#39;).join(&#39;\n&#39;)


In Java, the idiomatic way to declare critical sections in the code is the following:

    private void doSomething() {
      // thread-safe code
      synchronized(this) {
        // thread-unsafe code
      }
      // thread-safe code
    }

Almost all blocks synchronize on  `this`, but is there a particular reason for this? Are there other possibilities? Are there any best practices on what object to synchronize on? (such as private instances of `Object`?)

In Java critical sections, what should I synchronize on?

I mean to open the built-in Windows GUI from command line- not to launch by Schtasks


How to launch Windows Scheduler by command-line?

I am using a simple regex to replace break tags with newlines:

    br_regex = /&lt;br&gt;/;
    input_content = input_content.replace(br_regex, &quot;\n&quot;);

This only replaces the first instance of a break tag, but I need to replace all. `preg_match_all()` would do the trick in PHP, but I&#39;d like to know the JavaScript equivalent.

JavaScript equivalent of PHP&#39;s preg_replace

I am using a simple regex to replace break tags with newlines:
<pre><code class="hljs language-ini">br_regex = /&#x3C;br>/;
input_content = input_content.replace(br_regex, "\n");
</code></pre>
This only replaces the first instance of a break tag, but I need to replace all. <code>preg_match_all()</code> would do the trick in PHP, but I'd like to know the JavaScript equivalent.

I&#39;m looking for a fast way to turn an associative array in to a string. Typical structure would be like a URL query string but with customizable separators so I can use &#39;`&amp;amp;`&#39; for xhtml links or &#39;`&amp;`&#39; otherwise.

My first inclination is to use `foreach` but since my method could be called many times in one request I fear it might be too slow.

    &lt;?php
    $Amp = $IsXhtml ? &#39;&amp;amp;&#39; : &#39;&amp;&#39;;
    $Parameters = array(&#39;Action&#39; =&gt; &#39;ShowList&#39;, &#39;Page&#39; =&gt; &#39;2&#39;);
    $QueryString = &#39;&#39;;
    foreach ($Parameters as $Key =&gt; $Value)
            $QueryString .= $Amp . $Key . &#39;=&#39; . $Value;

Is there a faster way?

Fastest way to implode an associative array with keys

I&#39;m teaching myself some basic scraping and I&#39;ve found that sometimes the URL&#39;s that I feed into my code return 404, which gums up all the rest of my code.

So I need a test at the top of the code to check if the URL returns 404 or not.

This would seem like a pretty straightfoward task, but Google&#39;s not giving me any answers.  I worry I&#39;m searching for the wrong stuff.

One blog recommended I use this:

    $valid = @fsockopen($url, 80, $errno, $errstr, 30);
 
and then test to see if $valid if empty or not.

But I think the URL that&#39;s giving me problems has a redirect on it, so $valid is coming up empty for all values.  Or perhaps I&#39;m doing something else wrong.

I&#39;ve also looked into a &quot;head request&quot; but I&#39;ve yet to find any actual code examples I can play with or try out. 

Suggestions?  And what&#39;s this about curl?

Easy way to test a URL for 404 in PHP?

Some guy called one of my Snipplr submissions &quot;crap&quot; because I used &lt;code&gt;if ($_SERVER[&#39;REQUEST\_METHOD&#39;] == &#39;POST&#39;)&lt;/code&gt; instead of &lt;code&gt;if ($\_POST)&lt;/code&gt;

Checking the request method seems more correct to me because that&#39;s what I really want to do. Is there some operational difference between the two or is this just a code clarity issue?

$_POST vs. $_SERVER[&#39;REQUEST_METHOD&#39;] == &#39;POST&#39;

I have a php file which I will be using as exclusively as an include. Therefore I would like to throw an error instead of executing it when it&#39;s accessed directly by typing in the URL instead of being included.

Basically I need to do a check as follows in the php file:

    if ( $REQUEST_URL == $URL_OF_CURRENT_PAGE ) die (&quot;Direct access not premitted&quot;);

Is there an easy way to do this?

Prevent direct access to a php include file

I want to retrieve information like the city, state, and country of a visitor from their IP address, so that I can customize my web page according to their location. Is there a good and reliable way to do this in PHP? I am using JavaScript for client-side scripting, PHP for server-side scripting, and MySQL for the database.

Getting the location from an IP address

What is it best to handle pagination? Server side or doing it dynamically using javascript?

I&#39;m working on a project which is heavy on the ajax and pulling in data dynamically, so I&#39;ve been working on a javascript pagination system that uses the dom - but I&#39;m starting to think it would be better to handle it all server side.

What are everyone&#39;s thoughts?

Pagination: Server Side or Client Side?

I have to call domain A.com (which sets the cookies with http) from domain B.com.
All I do on domain B.com is (javascript): 

    var head = document.getElementsByTagName(&quot;head&quot;)[0];
    var script = document.createElement(&quot;script&quot;);
    script.src = &quot;A.com/setCookie?cache=1231213123&quot;;
    head.appendChild(script);
    
This sets the cookie on A.com on every browser I&#39;ve tested, except Safari.
Amazingly this works in IE6, even without the P3P headers.

Is there any way to make this work in Safari?


  [1]: http://evernote.com

Setting cross-domain cookies in Safari

I have now seen 2 methods for determining if an argument has been passed to a JavaScript function. I&#39;m wondering if one method is better than the other or if one is just bad to use?

     function Test(argument1, argument2) {
          if (Test.arguments.length == 1) argument2 = &#39;blah&#39;;

          alert(argument2);
     }

     Test(&#39;test&#39;);

Or

     function Test(argument1, argument2) {
          argument2 = argument2 || &#39;blah&#39;;

          alert(argument2);
     }

     Test(&#39;test&#39;);

As far as I can tell, they both result in the same thing, but I&#39;ve only used the first one before in production.

Another Option as mentioned by [Tom][1]:

    function Test(argument1, argument2) {
        if(argument2 === null) {
            argument2 = &#39;blah&#39;;
        }

        alert(argument2);
    }

As per Juan&#39;s comment, it would be better to change Tom&#39;s suggestion to:

    function Test(argument1, argument2) {
        if(argument2 === undefined) {
            argument2 = &#39;blah&#39;;
        }

        alert(argument2);
    }


  [1]: https://stackoverflow.com/questions/411352/how-best-to-determine-if-an-argument-is-not-sent-to-the-javascript-function#411368

How best to determine if an argument is not sent to the JavaScript function

Unfortunately, despite having tried to learn regex at least one time a year for as many years as I can remember, I always forget as I use them so infrequently. This year my new year&#39;s resolution is to not try and learn regex again - *So this year to save me from tears I&#39;ll give it to Stack Overflow*. (Last Christmas remix).

I want to pass in a string in this format `{getThis}`, and be returned the string `getThis`. Could anyone be of assistance in helping to stick to my new year&#39;s resolution?

----------
Related questions on Stack Overflow:

   * [https://stackoverflow.com/questions/346567/how-can-one-turn-regular-quotes-i-e-into-latex-tex-quotes-i-e][1]
   * [https://stackoverflow.com/questions/1237/regex-to-pull-out-a-section-a-substing-from-a-string-between-two-tags][2]
   * [https://stackoverflow.com/questions/328387/regex-to-replace-all-n-in-a-string-but-no-those-inside-code-code-tag][3]

  [1]: https://stackoverflow.com/questions/346567/how-can-one-turn-regular-quotes-i-e-into-latex-tex-quotes-i-e
  [2]: https://stackoverflow.com/questions/1237/regex-to-pull-out-a-section-a-substing-from-a-string-between-two-tags
  [3]: https://stackoverflow.com/questions/328387/regex-to-replace-all-n-in-a-string-but-no-those-inside-code-code-tag

Regex to get string between curly braces

I have a webpage that implements a set of tabs each showing different content. The tab clicks do not refresh the page but hide/unhide contents at the client side.

Now there is a requirement to change the page title according to the tab selected on the page ( for SEO reasons ). Is this possible? Can someone suggest a solution to dynamically alter the page title via javascript without reloading the page?

How to dynamically change a web page&#39;s title?

It is my understanding that the `java.regex` package does not have support for named groups ([http://www.regular-expressions.info/named.html](http://www.regular-expressions.info/named.html)) so can anyone point me towards a third-party library that does?

I&#39;ve looked at [jregex](http://jregex.sourceforge.net/) but its last release was in 2002 and it didn&#39;t work for me (admittedly I only tried briefly) under java5.

Regex Named Groups in Java

Initial Googling indicates that there&#39;s no built-in way to do regular expressions in an Objective-C Cocoa application.

So four questions:

1. Is that really true?

2. Are you kidding me?

3. Ok, then is there a nice open-source library you recommend?

4. What are ways to get close enough without importing a library, perhaps with the NSScanner class?

Regular expressions in an Objective-C Cocoa application

Is there any implementation of regex that allow to replace group in regex with lowercase version of it? 

regex implementation to replace group with its lowercase version

How to extract a text part by regexp in linux shell? Lets say, I have a file where in every line is an IP address, but on a different position. What is the simplest way to extract those IP addresses using common unix command-line tools?

Content Type	Original Author	Original Content on Stackoverflow
Question	ryonlife	View Question on Stackoverflow
Solution 1 - Php	annakata	View Answer on Stackoverflow
Solution 2 - Php	bobince	View Answer on Stackoverflow

JavaScript equivalent of PHP's preg_replace

Php Problem Overview

Php Solutions

Solution 1 - Php

Solution 2 - Php

How to launch Windows Scheduler by command-line?

In Java critical sections, what should I synchronize on?

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