如果我没有特定的页脚文本/img args，我该如何制作 my.setFooter，它只是 null？

Question

How can i make my.setFooter the same as the rest of my embed? To make it so if i dont specific footer text/img args its just null?

      .setTitle( args[1] ? args[1] : null)
      .setDescription( args[2] ? args[2] : null)
      .setFooter({ text: args[3], iconURL: args[4] })
      .setThumbnail( args[5] ? args[5] : null)
      .setImage( args[6] ? args[6] : null)
      .setColor( args[7] ? args[7] : null);

This is my current code, everything else works how i set it up however im not sure how to do that for.setFooter.

Answer 1

You don't really need the ternary operator. Just use args[1] || null args[1] || null . This expression resolves to either args[1] , or, if that's a falsy value , null . For your EmbedBuilder.setFooter() , you would do this:

EmbedBuilder
  // ...
  .setFooter({
    text: args[3] || null,
    iconURL: args[4] || null
  })
  // ...

Here's a more detailed explanation of this:
Take the expression a || b a || b , given that a and b are of type any . If a is a falsy value , this returns b . Otherwise, it returns a .
This also works with functions, as shown in the following example:

function a() { return 0; }
function b() { return -2048; }
function c() { return 4096 }
a || b  // Returns `-2048`
c || b  // Returns `4096`