What is the method for comparing array elements to a regular expression in this particular scenario?

Question

What is the method for comparing array elements to a regular expression in this particular scenario?

My array contains strings with a specific format:

obj-meta_version-11_info
obj-meta_version-12_info
obj-meta_version-13_info

I need to loop through this array to identify objects that adhere to this naming convention. I think the regex pattern should be something like this:

obj-meta_version-([\d .]+)_info

Here's an example of what I'm trying to accomplish:

    for(let i=0; i<body.length; i++){
      if body[i].name = obj-meta_version-([\d .]+)_info {
         // do stuff
      }
    }

How can I correctly rewrite this if statement in JavaScript to utilize the regex? I have a background in Python, so I'm not quite sure how to do this.

javascript

Answer 1

Answer №1

Here is a potential solution for your code:

const body = [
  {name:'obj-meta_version-11_info'},
  {name:'wrong'},
  {name:'obj-meta_version-12_info'},
  {name:'obj-meta_version-13_info'},
  {name:'wrong again'},
];

for(let i=0; i<body.length; i++){
  if (body[i].name.match(/obj-meta_version-([\d .]+)_info/)) {
      console.log(body[i]);
  }
}

Sample output would be:

{ name: 'obj-meta_version-11_info' }
{ name: 'obj-meta_version-12_info' }
{ name: 'obj-meta_version-13_info' }

Changes made:

Enhanced the condition in the if statement by adding ( and )
Enclosed the regular expression in / for creating a RegExp object to match string patterns
Applied the regular expression to the name field of each object

Keep in mind, the [\d .] part may need review. It currently matches one digit (0-9), a space character, or a dot. Consider \d+ for one or more digits instead.

Answer 2

Here is a potential solution for your code:

const body = [
  {name:'obj-meta_version-11_info'},
  {name:'wrong'},
  {name:'obj-meta_version-12_info'},
  {name:'obj-meta_version-13_info'},
  {name:'wrong again'},
];

for(let i=0; i<body.length; i++){
  if (body[i].name.match(/obj-meta_version-([\d .]+)_info/)) {
      console.log(body[i]);
  }
}

Sample output would be:

{ name: 'obj-meta_version-11_info' }
{ name: 'obj-meta_version-12_info' }
{ name: 'obj-meta_version-13_info' }

Changes made:

Enhanced the condition in the if statement by adding ( and )
Enclosed the regular expression in / for creating a RegExp object to match string patterns
Applied the regular expression to the name field of each object

Keep in mind, the [\d .] part may need review. It currently matches one digit (0-9), a space character, or a dot. Consider \d+ for one or more digits instead.

What is the method for comparing array elements to a regular expression in this particular scenario?

Answer №1

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