3 Answers
New Answerfor example var a =2; var b=5; var result= a+b; document.write(result); o/p : 25
6/12/2016 2:34:56 AM
Avdhoot yadav3 Answers
New AnswerIt concatenates strings and adds numbers. var a="2"; var b="3"; document.write(a+b); Returns 23. var a=2; var b=3; document.write(a+b); Returns 5.
When you want to add, avoid single or double quotes when dealing with numbers else JavaScript will take them as strings. when that happens, you get concatenation instead of addition.
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