let str 'Masteringjs.ioF' str.slice (0, -1) // Masteringjs. slice () supports negative indexing, which means that slice (0, -1) is equivalent to slice (0, str.length - 1). It takes two arguments: the start index and the end index. buf.indexOf (), support additional arguments. To remove the last character from a string in JavaScript, you should use the slice () method. The range specified by the begin and end parameters is clamped to the valid index range for the current array. If either begin or end is negative, it refers to an index from the end of the array, as opposed to from the beginning. Node.js APIs accept plain Uint8Array s wherever Buffer s are supported as well. buf.toString () is incompatible with its TypedArray equivalent. The slice () method copies up to, but not including, the byte indicated by the end parameter. The Buffer class is a subclass of JavaScript's Uint8Array class and extends it with methods that cover additional use cases. The array returned by slice() returns a shallow copy, meaning that any references within the original array will just be copied over as-is, and won't allocate memory for completely new objects. () can be used to achieve the behavior of () on both Buffer s and other TypedArray s and should be preferred.

Nodejs slice