Question

I got 2 questions:

• My function looks like that

  function count() {
var value = ids.val();
return (value == '') ? 0 : value.replace(/\s,?|,$/g, '').split(/\r\n|\r|\n/).length;
}

What I wanna do is, to skip whitespaces and count all new lines
For ex:

85
96
75
<whitespace>
76

count() must return 4 not 5. How can I modify my function?

• How to convert line break seperated words/numbers to comma seperated content?

For ex:

85
96
75<whitespace>
<whitespace>
76

I want to trim all whitespaces and convert whole content into something like that 85,96,75,76. How can I do it ?

Answer 1

The easiest way would be .filter($.trim).map($.trim), which first removes any whitespace entries, and then cleans the remaining entries by removing surrounding spaces: http://jsfiddle.net/BtLzf/1/.

var vals = ids.val()
             .split(/\r\n|\r|\n/)
             .filter($.trim)
             .map($.trim);

vals.length; // 4
vals.join(); // 85,96,75,76

.filter/.map are ES5 which means you’ll need a shim for older browsers.