What is the difference between String.slice and String.substring in js

The difference between String.slice and String.substring in js is: 1. If [start>stop], then substring will exchange these two parameters; 2. If [start>stop], slice will return a null character string.

The difference between String.slice and String.substring in js is:

slice() is similar to substring( ) , but has some different behavior.

Syntax: string.slice(start, stop);

Syntax: string.substring(start, stop);

What do they have in common:

• If start equals stop: Return an empty string

• If stop is omitted: extract characters to the end of the string

• If either parameter is greater than the length of the string, the length of the string will be used instead.

substring() Difference:

• If start > stop, then substring will exchange these two parameters.

• If either argument is negative or NaN, it is treated as 0.

slice() Difference:

• ##If start > stop, slice() will return an empty string. ( "" )

• If start is negative: Sets char from the end of the string, just like substr() in Firefox. This behavior is observed in both Firefox and IE.

• If stop is negative: set stop to: string.length – Math.abs(stop) (original value), but in range 0 in the ECMA specification (so, Math .max(0, string.length stop) ) is the limit.

Related free learning recommendations: JavaScript(Video)

The above is the detailed content of What is the difference between String.slice and String.substring in js. For more information, please follow other related articles on the PHP Chinese website!