title: how to replace javascript '\' with another char
body: <p>i have a var in javascript that looks like this: </p>
  
  <pre><code>C:\docs\path\file.exe
  </code></pre>
  
  <p>how can i replace \ with another char like ? 
  so the var becomes  </p>
  
  <pre><code>C:?docs?path?file.exe
  </code></pre>
  
  <p><strong>edit</strong><br>
  i am trying to find the size of a file in JS. the only way i managed to do it, is to call a [WebMethod] using $ajax. when i try to send the path as it is, i get an escape character error, so i chose to replace '\' by '?' and then the [WebMethod] replaces '?' with '\' check the file size and returns it.</p>