Regular Expression to find a value in a string

Question

I've got a bunch of strings that look like this:

• This is string 1 [id:10]
• This is string 2 [id:4]
• This is string 3 [id:77]

Using javascript, how can I get an array of 10,4,77? These will be values of input fields all with the class form-text so I have the option of iterating of them.

Thanks, Howie

Answer 1

Lets say you have the given strings in array. Then using Array.map you can retrieve the id's

var a = ["This is string 1 [id:10]", "This is string 2 [id:4]", "This is string 3 [id:77]"];

var result = a.map(function (item) {
    return /.*?\[id:([\d]{1,})\]/g.exec(item)[1];
});

console.log(result);

Answer 2

\d+(?=\])

Try this.See demo .

https://regex101.com/r/vN3sH3/18

Answer 3

You could do something like this:

var test = "[id:10]";
var result = test.split(":")[1].split("]")[0];
//result should have 10