![]() ![]() substring(), it can take these two arguments:Īrgument #1 - Starting with 'from' it is required to mention where to extraction from and the first character's index will be set as 0.Īrgument #2 - Beginning with 'to', it is optional to mention where the end of extraction will be. Once omitted, the slice() will then select all the characters from the 'start' position to the end of the string and can also use the negative numbers to select from the end of the main string.Ĭonsole.log(numbers.slice(2,4)) // shows 23Ĭonsole.log(numbers.slice(-7,-3)) // shows 3456 For the substring method i.e. The position of the first character starts at 0 and it can use the negative values to specify the exact location from the end of the string.Īrgument #2 - For 'end', the position where to end the extraction is optional to mention. slice(), it can take these two arguments:Īrgument #1 - With 'begin' the position of where to begin the extraction is required. Also, all of these methods do not change the original string from which they extract. The methods slice(), substring(), and substr() are the methods that extract parts of a string and then return the extracted parts in a new string. S.substring(3, 7) // would return 'ther' String.slice() vs String.substr() vs String.substring() S.substr(3, 7) // would return 'ther ex'īut when we are using a 'substring', then the second parameter is the first index that is not to include. If we are using a 'substr' the second parameter is the number of the characters to include in the substring. What tells apart these JavaScript string methods are their 'Second Parameters' because both of the numbers are expecting two different outcomes. ![]() ![]() So, what separates these similar two string methods… The confusion mainly arises in these two JavaScript strings because they look very identical at the first glance, as both of these string methods also return a substring from a given string. JavaScript basically has two string methods that are: But first, we will start by explaining the key differences in the JavaScript strings i.e. With this article on JavaScript, we will be clearing out your confusion in using String.slice() vs String.substr() vs String.substring() together or separately. ![]()
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