how to get numbers from a string in javascript?

Question

I have

"id": 1468306 

inside of a string, how can I use regular expression to get the number 1468306 for it?

Answer 1

JSON.parse("{" + yourString + "}").id

如果您的字符串中有数字，将是您的数字。

Answer 2

You can use this regex:

/: (\d+)/

as in:

s = '"id": 1468306';
r = /: (\d+)/;
console.log(r.exec(s)[1]);

Output:

1468306

Answer 3

Fiddle: http://jsfiddle.net/SfeMh/

var regEx   = /\d+/g;
var str = '"id": 1468306';
var numbers = str.match(regEx);
alert(numbers); // returns 1468306

It looks like you're trying to parse a JSON String. Try this way as already mentioned:

var parsedObj = JSON.parse(myJSONString);
alert(parsedObj.id); // returns 1468306

Answer 4

您可以在javascript中使用parseInt（）方法，如下所示：

var str = parseInt(id);

Answer 5

Following code may help you:

var input = '"id": 1468306';
var matches = input.match(/"id": (\d+)/);
var id = matches[1];

The id get the required number.

Answer 6

This will match in this cases

id : 156454;
id :156454;
id:156454;

 /id\s?[:]\s?[0-9]+/g.match(stringhere)

Answer 7

Alright, my JSON answer still stands, use it if that's your full string you're giving us in the question. But if you really want a regex, here's one that will search for "id" and then find the number after.

parseInt(yourString.match(/("id"\s?:\s?)(\d+)/)[2])

Fiddle: http://jsfiddle.net/tS9M4/