Javascript-数据过滤和删除换行符

Question

A list of isbn's are entered in the text area and javascript opens an amazon search for each one entered.

Isbn's can be between 10 or 13 digits. Not all isbn searches start with an isbn, sometimes there can be information in front such as "isbn10:0195433831" so you cant count from the start.

For Example, this is a typical search:

0195433831 Good

0195433831 Poor

0195433831 Excellent

Question

Often times isbn's are entered in a different format breaking it, for example:

1) With spacing between numbers

978 0 132 76682 1 like new

978 0 495 38500 4 very good

2) With additional rating numbers added creating additional unnecessary searches.

9781118624616 9/10 condition with minimal highlighting

9780415462020 10/10 condition, brand new

So I must find a way to have Javascript filter out these conditions.

Code is here:

 //the input box. var input = document.getElementById('numbers'); //adding an event listener for change on the input box input.addEventListener('input', handler, false); //function that runs when the change event is emitted function handler () { var items = input.value.replace(/\\r?\\n/g, ' ').split(' '); length = items.length; console.log('your collection', items); for (var i = 0; i < length; i++) { if ( items[i] && !isNaN(items[i]) ) { console.log('opening page for isbn ', items[i]) openPage(items[i]); } } } //opens the tab for one isbn number function openPage (isbn) { var base = 'https://www.amazon.com/gp/search/ref=sr_adv_b/?search-alias=stripbooks&field-isbn=' window.open(base + isbn) } 

 <p>... note, after paste you may need to click outside the text area or tab out to fire the change event.</p> <textarea id=numbers placeholder="paste isbn numbers as csv here"> </textarea> 

Answer 1

ISBNs should be 13 numbers if I remember right so can't you just remove the whitespace and match groups of 13?

var str = "978 111 862 4616 9/10 condition with minimal highlighting\n\n9780415462020 10/10 condition, brand new",
    nums = str.replace(/\s/,"").match(/\d{13}/g);