删除 javascript 中字符串中的多余空格

Question

I have a text and after deleting special characters (;@#$%^&*()-=+`":.'><?./) and show just letters and numbers (and float numbers like 23.4 ) it returns some extra space

    const input : 'this is a signal , entry : 24.30 and side is short';

    const text = input.replace(/\.(?!\d)|[^\w.]/g, " ").toUpperCase();

    console.log(text.split(" "))

the output:

[
  'THIS',   'IS',    'A',
  'SIGNAL', '',      '',
  '',       'ENTRY', '',
  '',       '24.30', 'AND',
  'SIDE',   'IS',    'SHORT'
]

but I want to be this:

[
  'THIS',   'IS',    'A',
  'SIGNAL', 'ENTRY', '24.30',  
  'AND',    'SIDE',   'IS',     
  'SHORT'
]

And when I replace spaces and enters with empty string, returns this:

[ 'THISISASIGNALENTRY24.30ANDSIDEISSHORT' ]

what is the problem of my code?

Answer 1

Instead of replacing, consider matching all the sorts of characters you want to produce the array of words. It looks like you want something like:

 const input = 'this is a signal, entry: 24.30 and side is short'; const matches = input.toUpperCase().match(/[\w.]+/g); console.log(matches);

Answer 2

The second parameter in the replace method needs to be an empty string and not a space as you have it in your code.

Just do:

...
const text = input.replace(/\.(?!\d)|[^\w.]/g, "").toUpperCase();
...