CODEWITHSUNDEEP
javascript
Vish
Vish

Reputation: 4492

I am sorry, I got this code from my programmer and What does this code do?

function w_3_wid(str, wid03) {
   var word = new Array();
   var i;
   var ret = '';
   word = str.split(" ");
   for (i = 0; i < word.length; i ++ ) {
      if (word[i].length > wid03 && word[i].search(/&\w+;/) < 0) ret += word[i].substr(0, wid03) + ' ' + word[i].substr(wid03) + ' ';
      else ret += word[i] + ' ';
   }
   return ret;
}
function w_4_wid(str, wid03) {
   if (str.length <= wid03) return str;
   var word = new Array();
   word = str.split(" ");
   var ret = word[0] + ' ';
   var test;
   for (i = 1; i < word.length; i ++ ) {
      test = ret + word[i];
      if (test.length > wid03) return ret + '...';
      else ret += word[i] + ' ';
   }
   return str;
}


function w_6_wid(title) {
   title = w_3_wid(title, 15);
   title = w_4_wid(title, 60);
   return title;
}

w_6_wid(str);

Upvotes: 0

Views: 146

Answers (4)

scheffield
scheffield

Reputation: 6787

first: your programmer should read the book "Clean Code".

The idea of the function w_3_wid is - for what ever reason - to trunkate words which are longer than 15 characters AND containing an html entity (like &nbsp;)

The second function (w_4_wid) truncates the string at word boundaries.

The last one (w_6_wid) combines both functions.

To test these code you can append something like this:

alert(w_6_wid('Lorem ipsum abcdefghijklmnopqu abcdefghijklm&bnsp;nopqu'));

Upvotes: 1

Steve Mayne
Steve Mayne

Reputation: 22808

w_4_wid looks like it tries to truncate a sentence to a maximum width of the second parameter(60).

Upvotes: 0

Aryabhatta
Aryabhatta

Reputation:

Looks like the code is trying to take a sentence and then first truncate long words given a threshold, and then truncate the whole sentence (given another threshold), ending the sentence with "...".

Upvotes: 1

Jim Blackler
Jim Blackler

Reputation: 23169

w_4_wid appears to truncate a block of text to a maximum number of characters, without splitting words, and if the text is truncated to add '...' elipses at the end of the sentence.

w_3_wid seems to do something similar, imposing a maximum number of characters per word.

w_6_wid calls the above two functions in a chain, imposing both constraints on the input text.

Upvotes: 2

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