The “slice” method can be used in both arrays and strings in JavaScript. If the “end” parameter is not specified, the “slice” method extracts all the elements from the “start” parameter to the end of the array. The “start” parameter is mandatory, while the “end” parameter is optional. Here, the “start” parameter specifies the index at which to begin extraction, and the “end” parameter specifies the index at which to end extraction.
The end-index is non-inclusive, meaning that we slice the string until the index and not up to and including.The syntax for using the “slice” method in JavaScript is: array.slice(start, end) slice() method we can pass a positive end-index to the slice of characters from the start of the string. Instead of passing a negative index to the. slice() we can just as quickly remove the first character from the string. We learned to remove the last character from a string, by using the same. Therefore we should find out the necessary end-index via the length of the string. The downside to this approach is that we cannot make use of negative indexing. Use substring() to remove the last characterĪlternatively we could use the. Slicing off just the last character can be done by first passing the negative string length of -4 and again -1 as the end-index. Thus, a negative index of -1 will return the last character of a string. With negative indexes we start at the end of the string and go further backwards once we decrease the negative index. One part that might be confusing is the negative index of -1. Thus, to truly remove the last character from the string that is held by a variable we should reassign the result to the original variable. slice() is a new String object, the original string won't be mutated.
If we don't specify an end-index it is assumed that we want to slice to the end of the string. To specify this portion we need to pass an index to indicate where to start slicing and optionally one for where to end slicing. slice() method extracts a certain portion of a string. slice() method returns a new string object, leaving the original unchanged. With negative one we specify the last character of the string. 1, the second argument, is the end-index which indicates up to which character we wish to slice off characters. slice() is the starting-index from where we want to start slicing. The two arguments passed to slice() mean the following:
The most convenient way to remove the last character from a JavaScript String object is by making use of the. slice() to remove the last character of JavaScript Strings
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