integer « regex « jQuery Q&A

1. JavaScript/jQuery - grabbing an integer from an element's id    stackoverflow.com

From the following markup.

<div id="my-div">
    <a href="#" id="link-1">Somewhere</a>
    <a href="#" id="link-2">Somewhere else</a>
</div>

What are some options, using jQuery selectors and JavaScript for grabbing the integer in ...

2. jquery find integer inside string    stackoverflow.com

My text:

var str = 'Cost USD 400.00';

How do i use jquery to find number only in that str?

3. Checking only integer digit using RegEx in JQUERY    stackoverflow.com

I have following code snippet:

    var reg = /^[0-9]$/;

    $('input[type="text"]').keypress(function(){
       console.log(reg.test(parseInt($(this).val())));
    });

When I press any key ...

4. Regex to get return the first two ints    stackoverflow.com

Given a string like: #/projects/58/tasks/140 I want to be able to extract 58 & 140. I have the following:

parseInt(hash.match(/\d+/)[0]);

This gets 58, but I can't get 140 with:

parseInt(hash.match(/\d+/)[1])

y? thanks

5. Test strings for all alphabet characters or all integers    stackoverflow.com

I have a string which is of format ABC1234567

var value = "ABC1234567"  
var first3Letters = value.substring(0,3);  // ABC   
var next7Letters = value.substring(3,7);   //1234567`

Now ...