JavaScript search() fails to find “()” – Education Career Blog

This might seem trivial, but I’m new to JS. I have this piece of code:

var argumentsBegin ="(");
var argumentsEnd =")");

elementAction is a string. The problem with the code is it doesn’t seem to find the parenthesis. The first alert box shows for example:
But the second one doesn’t appear at all. All is cool if I replace () with {}, though. Any thoughts why is this not working for me?


Yes: the search() method of strings expects a regular expression as the parameter and is treating the string you’re passing as a regular expression pattern, in which parentheses have special meaning. Use indexOf() instead:

alert( elementAction.indexOf("(") ); 


search is regular expression, ( is keyword in regular expression. you have to escape ( to \(,
\( in string is "\\("

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