How to assign a string to a variable in javascript when the string has a single quote in it -

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in program there variable name 'quotes' takes input string api call.
program doesn't work when string has single quote in it. 

<script>     var quotes = "empty"         if(user.quotes)            quotes = user.quotes;    // string 'quotes' variable </script>

can 1 please tell me how fix problem?

replace single quote (escape php):

<script>     var quotes = "empty"         if(user.quotes)            quotes = user.quotes.replace(/'/g,"\\\'");    // string 'quotes' variable </script>

then wherever use quotes, replace "\'" "'".


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