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http://stackoverflow.com/questions/805107/creating-multiline-strings-in-javascript

this wont work because 
var market_data_text_1 = "<?php the_field('market_data_1_text') ;  ?>";

this works because backticks allows multiline, it may not work on all browsers
In EcmaScript 6, you are able to use backticks for Template Strings, known in
the spec as a NoSubstitutionTemplate:

var htmlString = `Say hello to 
multi-line
strings!`;

OR
var market_data_text_1 = `<?php the_field('market_data_1_text') ;  ?>`;