chunk/split a string in Javascript without breaking words

Question

Good day,

I would like to know if there is an easy way to chunk/split a string without breaking the words.

Eg:

var input = \"Lorem ipsum dolo         


        

Answer 1

Here's some brute force code that will do it:

function splitIntoLines(input, len) {
    var i;
    var output = [];
    var lineSoFar = "";
    var temp;
    var words = input.split(' ');
    for (i = 0; i < words.length;) {
        // check if adding this word would exceed the len
        temp = addWordOntoLine(lineSoFar, words[i]);
        if (temp.length > len) {
            if (lineSoFar.length == 0) {
                lineSoFar = temp;     // force to put at least one word in each line
                i++;                  // skip past this word now
            }
            output.push(lineSoFar);   // put line into output
            lineSoFar = "";           // init back to empty
        } else {
            lineSoFar = temp;         // take the new word
            i++;                      // skip past this word now
        }
    }
    if (lineSoFar.length > 0) {
        output.push(lineSoFar);
    }
    return(output);
}

function addWordOntoLine(line, word) {
    if (line.length != 0) {
        line += " ";
    }
    return(line += word);
}

If this routine encounters a single word longer than the desired line length, it will put it on a line by itself and will not break it up.

You can play with it here: http://jsfiddle.net/jfriend00/fbaLe/