Abbreviation of a string in JavaScript using a Regular Expressions

Table of Contents

1. HTML View for Description textarea
2. JavaScript methods and call onkeyup 

For example, when we type ccc and press the space key that time [ccc => conference call with customer]. here the value of ccc is predefined the array list. 

<textarea id="txtDescription" onkeyup="return checkAbbreviationKey(event)"></textarea>

JavaScript methods and call onkeyup 

function checkAbbreviationKey(evt) {

    var charCode = (evt.which) ? evt.which : event.keyCode

        if (charCode == 32) {          

            var charStr = evt.target.value.match(/\S+/g)

            var abbreviations = isAbbreviations();               

            if (abbreviations.length > 0) {

               for(var index in abbreviations) {

                   var reg = new RegExp("\\b" + abbreviations[index].Anchor + "\\b", "g");

                   if (charStr[charStr.length - 1].match(reg)) {

                       charStr[charStr.length - 1] = abbreviations[index].ExpandedText;

                       evt.target.value = charStr.join(" ");

                   }

               }

            }

       }

}   

function isAbbreviations() {

    var abbreviationsList = ConstraintsList();        

    return abbreviationsList;

   }

}