Javascript trim() function implementation

There are many places where we need to use trim in JavaScript, but JavaScript does not have an independent trim function or method to use, so we need to write a trim function ourselves to achieve our purpose.

Option 1:

Called in prototype mode, that is, obj.trim() form. This method is simple and widely used. It is defined as follows:

Option 2:

Called in tool mode, that is, in the form of trim(obj). This method can be used for special processing needs. The definition is as follows:

Usage examples are as follows:

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