Ways to extract only numbers from a string

Question

Ways to extract only numbers from a string

I have encountered a frustrating issue in VueJS: I am receiving an object with the following structure:

{ "description": "this is our List.\n Our Service includes:\n-1 something\n-2 something else\n and another thing\n"}`

My dilemma is how to filter out the "\n" characters and the "-1,-2..." sequences, replacing them with HTML tags like < br >?

I attempted to solve this problem using a function as shown below:

returnList: function(value){
  value.replace("\n","<br>")
  return value`

Unfortunately, this approach does not work consistently for all instances of "\n".

javascript vue.js replace

Answer 1

Answer №1

Before diving in, it's important to understand that the String.prototype.replace method returns the result of the replacement operation.

let text = {
  "content": "this is a sample text.\n Here are some bullet points:\n-1 point one\n-2 point two\n and finally\n"
};

console.log(text.content.replace(/\n-[0-9]+/g, "<br>"))

Another way to use regex for this task is: /\n(-\d)?/g

Answer 2

Before diving in, it's important to understand that the String.prototype.replace method returns the result of the replacement operation.

let text = {
  "content": "this is a sample text.\n Here are some bullet points:\n-1 point one\n-2 point two\n and finally\n"
};

console.log(text.content.replace(/\n-[0-9]+/g, "<br>"))

Another way to use regex for this task is: /\n(-\d)?/g

Answer 3

Answer №2

To solve this issue, regex can be utilized. For example:

value.replace(/\/n/g,"<br>")

Answer 4

To solve this issue, regex can be utilized. For example:

value.replace(/\/n/g,"<br>")

Answer 5

Answer №3

You need to make a modification here:

returnList: function(value){
  value.replace("\n","<br>")
  return value`
}

Change it to this:

returnList: function(value) {
  value = value.replace("\n","<br>")
  return value;
}

This change is necessary because .replace does not alter the original value, but instead creates a new value with the modifications.

Keep in mind that the replace method only affects the first instance of the string. For a solution that replaces all instances, you can follow this recommendation

value.split("\n").join("<br>")

.

Answer 6

You need to make a modification here:

returnList: function(value){
  value.replace("\n","<br>")
  return value`
}

Change it to this:

returnList: function(value) {
  value = value.replace("\n","<br>")
  return value;
}

This change is necessary because .replace does not alter the original value, but instead creates a new value with the modifications.

Keep in mind that the replace method only affects the first instance of the string. For a solution that replaces all instances, you can follow this recommendation

value.split("\n").join("<br>")

.

Ways to extract only numbers from a string

Answer №1

Answer №2

Answer №3

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