Regex to replace 'null-null-1234' to 'xxx-xx-1234' [closed] - javascript

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I'm trying to replace string
'null-null-1234' to '***-**-1234'
const p = 'null-null-1234';
const regex = /null/gi;
console.log(p.replace(regex, '***'));
Output => "***-***-1234" NOT AS EXPECTED


p.replace(/null-null/, '***-**')


I think what you actually want to do is to make a distinction between first and second values.
Hence, you probably need 2 regexes.
p.replace(/^null/, '***').replace(/-null-/, '-**-')
The first one will replace the null in first position (if any) by 3 stars, and the second replace will replace a null in the middle (if any) by 2 stars.

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JS concatenate numbers with operator sign [closed]

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Maybe tittle is not too descriptive, but how do I get this kind of result
var string = 11+'-'+10
// expected result 11-10
console.log(string);
Every time I try to do the above I get 1, or whatever the result of the subtraction is
I will be a little bit clear about this. What I want to do with this is generate a button with onclick like this:
onClick = method(1,[11-10, 12-10])
method(id,...array){
console.log(array)
//result [1,2]
}
even if inspecting the button actually shows the correct output

In your first example, you use
11+'-'+10
In the second one, you use
11-10
There is a clear difference
Using the first method in the second code will work as expected
method(1,[11+'-'+10, 12+'-'+10])
To make it shorter just use strings
method(1,['11-10', '12-10'])

String processing, get last string in vuejs? [closed]

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i am dealing with strings in vuejs. Now I have 4 url ​​strings:
https://web-sand.com/product/slug/apple-iphone-13
https://web-sand.com/product/slug/samsung-galaxy
https://web-sand.com/product/slug/xiaomi-red
https://web-sand.com/product/slug/apple-ipad
Now I want to process to get the final string. Since my string is not fixed length using fixed ways is not efficient.
Result I want to get :
apple-iphone-13
samsung-galaxy
xiaomi-red
apple-ipad
Everyone please give me any comments, thanks.

You can use:
function getStr(str) {
return str.split('\/').pop()
}

Here:
input.split("\n").map(line => line.split("/").pop())

[
'https://web-sand.com/product/slug/apple-iphone-13',
'https://web-sand.com/product/slug/samsung-galaxy',
'https://web-sand.com/product/slug/xiaomi-red',
'https://web-sand.com/product/slug/apple-ipad'
].map(item => item.split('/').pop())

Capture matching text format in a string [closed]

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I am trying to write a regex to extract the items in the text below that start with the # and ends with )
const bodyOfText = "#[DataStructures](topic_DataStructures) is one #[Algorithms](topic_Algorithms) branch that could #[Make or Mar](topic_Make or Mar)";
So basically, will want an array that looks like:
["#[DataStructures](topic_DataStructures)", "#[Algorithms](topic_Algorithms)", "#[Make or Mar](topic_Make or Mar)"]

Using string match() we can try:
var bodyOfText = "#[DataStructures](topic_DataStructures) is one #[Algorithms](topic_Algorithms) branch that could #[Make or Mar](topic_Make or Mar)";
var matches = bodyOfText.match(/#\[.*?\]\(.*?\)/g);
console.log(matches);

How to Filter an array of strings based on first word in the string in javascript? [closed]

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With the following array of strings in javascript, is there a way to use the .filter to filter by the first word?
['Desk_One', 'Desk_Two', 'Desk_Three', 'Chair_One', 'Chair_Two']
For example to .filter(x = 'Desk_*')
['Desk_One', 'Desk_Two', 'Desk_Three']
Maybe this needs to be a regex

You can use startsWith() function like this:
let array = ['Desk_One', 'Desk_Two', 'Desk_Three', 'Chair_One', 'Chair_Two'];
let result = array.filter((item)=>item.startsWith(array[0].split('_')[0]));
console.log(result)

Is there a way to split a string separated by lines, into a 2D Array? [closed]

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I am a beginner to javascript and I am confused on how to split a string which is separated by line breaks, into a 2d array. Here is the string. The numbers represent something that I need to make the code function, so excuse that:
11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
20000000010000000000000100000001000001000001000000000001000000000100010000010000010000000100001
11011111110111111111110101110101011101011101011101111101111111010101011101010101110101111100101
11000000010000010001010001000100010001000100000101000100000100010101000101010100000100000000101
11011111011111010101011111011111011111011111111101010111110101110101110101110111111111111111101
11010001000001000101000001010001010000010000010001010001000101010100010001000100010001000100001
11010101111101111101110101010101010111110111010111011101011101010111011111011101010101011100101
11010100000000000100010101000100010000010001000101010001000001010100010001010001000100010000101
11010111111111110111010101111111011111011101111101010111111111010101010101010101111111110111101
11010100000000000001010100000001000001000100010000010000010000000001010100010101000000000100001
11010111011111111101010111011111110111110111011111011111010111111111010111110111011111111111111
11010001000100010001010101010000010100010001000001010001000101000001010000000100010000000000001
11011101110101010111010101010101010101010111111101011101111101011101110111111101110111111111101
11000101000101010001010001000101010001000100000001000001000001010100000100000001000100000100001
11011101111101011111011111111101111111111101111111111101110101010111111101111101011101110101111
11010001000001010000010000000100000100000001000001000100000101010000000100010001000101000100001
11010111011111010111110111110111110101111111010111010111111101010111110111011111110111011111001
11010001010001000100000100000000000101000000010001010001000001000101000101000100010001000100001
11011101011101111111110111111111110101011111111101011101011111111101011101110101011101110101001
11010101000100000000010000000100000101000000000101000100000000010001000100010001000000000101001
11010101110101111111011111110111111101111111111101110101111101110101110111011111111111111101001
11000100010100010001000000000100000001000000000100010101000101000101000100010100000001000001001
11110101110100010111111111011101111111011111110101110101010111011101011101010101011101011111111
11000101000100010100000001010001000000010001000101000101010000000100000001010001000101000000001
11011101011101110101011111010111011111110111011101011101011111111111111111010111110111111111001
11000100010001000101000001010001000000010100010100000001010001000001000001010100000100010001001
11110111110101110101111101011101111111010101110101111111010111011101010111010101110101010101001
11000100010100010100010101000100000001000101000001010001000100010101010001010100010101010100001
11011101010111010111010101110111111101110101111101010101011101110101111101011111010101010111111
11000101000100010000010100000000000100000100000100010100010001010001000100000000010101010000001
11110101111101011111010111111111111111111101110111010111110111010111010111111111110101011111001
11010100010001010001000001010000000001000100010100010001010100010100010000000000010101000000001
11010111010111110101111101010101111101010111110101111101010101110101011111111111011101111111001
11000100010100000101000000010101000100010000010100010000010101000101000001000001000100010001001
11011111110101111111011111110111010111111111010111110111110101011111111101011101110101010101001
11000000000100010000000100010000010100010001010000000100000101000000010001000100000101000101001
11111111110111011111011101010111110101010101011111110101111101111111010111111111011111011101001
11000000000101000001010001010100000101010100010000010100010001000000010000000001010001010001001
11011111111101111101110111011101111101010111110111011111010111011111111111111101010101110111001
11000000000000000100000100000001000001000000000100000000010000000000000000000001000100000100003

Hey buddy I'm also new but I actually have an idea. You can try this:
a.split("\n");

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