\[(.+)\]
var regexstring = new RegExp("\[(.+)\]"); var myregexp =regexstring.exec(data);
<html> <head> <script> var square_bracket_text = "["; var prefix_string = ""; for (var i=0;i<1000;i++) { square_bracket_text += prefix_string + "'" + (Math.floor(Math.random(0,1)*100)) + "'"; prefix_string = ","; } square_bracket_text += "]"; function demo() { document.getElementById('original').innerHTML = square_bracket_text; document.getElementById('results').innerHTML = square_bracket_text.substring(1,square_bracket_text.length-1); } </script> </head> <body onLoad="demo();"> <div id="original"></div> <div id="results"></div> </body> </html>