Saturday, February 27, 2016

How to replace all occurences of a string using a variable in regex in #javascript

I want to replace all occurrences of words in a substitution dictionary

My small substitution dictionary is a javascript object like this {"utilize":"use"}


1. Loop through the substitution dictionary using jQuery.each
2. we have to use the javascript string function .replace with regex. 
3. You might typically hardcode the pattern like this .replace(/replaceThis/g, "withThis"). Instead we want to use the substitution value from the dictionary. In order to do this we need to use a RegEx object. Instead of /replaceThis/g we use new RegEx(patternVariable, "g")

Example code
var targetText = $("#targetText")

    $.each(wordSubsfunction(key, value){

        targetText targetText .replace(new RegExp(key, "g"), value)


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