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In my code I split a string based on _ and grab the second item in the array.
var element = $(this).attr('class'); var field = element.split('_')[1]; Takes good_luck and provides me with luck. Works great!
But, now I have a class that looks like good_luck_buddy. How do I get my javascript to ignore the second _ and give me luck_buddy?
I found this var field = element.split(new char [] {'_'}, 2); in a c# stackoverflow answer but it doesn't work. I tried it over at jsFiddle...
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To split a JavaScript string only on the first occurrence of a character, call the slice() method on the string, passing it the index of the character + 1 as a parameter. The slice method will return the portion of the string after the first occurrence of the character.
Using the split() Method For example, if we put the limit as n (n >0), it means that the pattern will be applied at most n-1 times. Here, we'll be using space (” “) as a regular expression to split the String on the first occurrence of space.
To split a string with specific character as delimiter in Java, call split() method on the string object, and pass the specific character as argument to the split() method. The method returns a String Array with the splits as elements in the array.
To split a string and get the first element of the array, call the split() method on the string, passing it the separator as a parameter, and access the array element at index 0 . For example, str. split(',')[0] splits the string on each comma and returns the first array element. Copied!
Use capturing parentheses:
"good_luck_buddy".split(/_(.+)/)[1] "luck_buddy" They are defined as
If
separatorcontains capturing parentheses, matched results are returned in the array.
So in this case we want to split at _.+ (i.e. split separator being a sub string starting with _) but also let the result contain some part of our separator (i.e. everything after _).
In this example our separator (matching _(.+)) is _luck_buddy and the captured group (within the separator) is lucky_buddy. Without the capturing parenthesis the luck_buddy (matching .+) would've not been included in the result array as it is the case with simple split that separators are not included in the result.
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What do you need regular expressions and arrays for?
myString = myString.substring(myString.indexOf('_')+1) var myString= "hello_there_how_are_you" myString = myString.substring(myString.indexOf('_')+1) console.log(myString)If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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