jQuery TRIM space between 2 alphabets or words

Question

I want to remove white spaces at the beginning and end of the words. Also there should be just 1 character space between 2 words. I use below code but it only remove white spaces in the beginning of the first word and at the end. How can I remove extra space between 2 words.

jQuery Trim

var fullname= jQuery('#fullname').val();
    fullname= jQuery.trim(fullname);

if(fullname.length == 0) {
   var error = true;
   jQuery('#fullname_error').fadeIn(500);
   } else {
   jQuery('#fullname_error').fadeOut(500);
}

PHP Trim

 $fullname = mysql_real_escape_string(trim($_POST["fullname"]));

Answer 1

you can use preg_replace()

preg_replace('/ {2,}/', ' ', $string);

this code will found any sequence of spaces longer than 2 and replace it by one space

upd: also you can use JavaScript native function replace:

string.replace(/ {2,}/, ' ');

Answer 2

is there a way to trim extra space between 2 words?

Yes.

var str = "foo    bar   etc";
str = $str.replace(/\b\s{2,}\b/g, ' ');

Or in PHP

$str = preg_replace('/\b\s{2,}\b/', ' ', $str);

Answer 3

Here are String prototypes for trimming.

String trim prototypes

Include the following definition in your code.

String.prototype.fulltrim=function(){return this.replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,'').replace(/\s+/g,' ');};

Then use 'fulltrim' instead of 'trim' in your code. 'fulltrim' will remove spaces from the front, end, and the middle all at once.

Here is an example Plunker