Search and Highlight Text With Bracketed Text in javascript by regular expression

I am doing one project for tat i want to search and highlight text the words i can able to search the words and multiple words through regular expression.my code is

var RE = new RegExp(word_array[i],"gi")

word_array nothing but my words are in array format to be search and highlight for ex if

         开发者_运维技巧word_array[0] ="tobacco"
         word_array[1] ="chipper(tobacco)"
         word_array[2]="tobacco(snuf)"

var RE=new RegExp("tobacco","gi")

the word tobacco in my word_array,this word searched and highlighted in my html pages.but the word like "chipper(tobacco)"in my array having text with bracketed text wont search and highlight i.e var RE =new RegExp("chipper(tobacco)","gi")

i tried something with [abc],(/\[([^\]]+)\],(?:abc) but not search and highlight thank but i tried ur escaping sequence(chipper(tobacco) it search highlight "chippertobacco" only without parentheses i want to highlight the word "chipper(tobacco)" with parentheses this should be in word_array[i] in loop so plz tel me how can give code for word_array[i] in var RE = new RegExp(word_array[i],"gi") gi-nothing but global search and case insensitive

thank in advance

plz any one help as soon as possible

brackets have specail meaning in regex. if you want to match a literal bracket you need to escape it. to match "chipper(tobacco)" use RegExp("chipper\(tobacco\)","gi")

I tried the Escaping sequence with Reg Exp

                 "chipper\\"(tobacco\\) 

it wil search and highligt the

"chipper(tobacco)" and for array

          word_array[i].replacereplace("(","\(").replace(")","\\)")