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Asked: 2026-06-15T22:06:00+00:00

I need functionality that textarea should contain max 5 lines and each line should

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I need functionality that textarea should contain max 5 lines and
each line should contain max 15 chars, when user writes 2 words
e.g. 123456 123456789 and if that line char limit exceeds 15, then
it should bring the 2nd word in next line along with \n char in first line
(means 123456 will be in first line along with \n and 123456789 will be in 2nd)
,
I need to maintain \n(replacing <br>) in my db for some reasons.

i wrote this code, which gives fuzzy result in some conditions

<textarea onkeypress="charCountTextarea('txt1',event,'75','14')" id="txt1"></textarea> 

var countLines=0;

var newLines;

function charCountTextarea(textAreaId,e,limit,lineLen)
{   

       newLines = $("#"+textAreaId).val().split("\n").length;
       var t = $("#"+textAreaId)[0];
       var lineIndex = t.value.substr(0, t.selectionStart).split("\n").length-1;

    //console.log("new lines"+lineIndex);
        if(newLines >= 5 && $("#"+textAreaId).val().split("\n")[lineIndex].length>lineLen)
        {

            if( e.keyCode!=8 && e.keyCode!=46 && e.keyCode!=33 && e.keyCode!=34 && e.keyCode!=35 && e.keyCode!=36 && e.keyCode!=37 && e.keyCode!=38 && e.keyCode!=39 && e.keyCode!=40)
            {
                e.preventDefault();
                return false;
            }
        }


        else
        if($("#"+textAreaId).val().split("\n")[lineIndex].length>=lineLen)  // which will count the total line char condition
        {
            console.log($("#"+textAreaId).val().split("\n")[lineIndex][lineLen-1]);


            if($("#"+textAreaId).val().split("\n")[lineIndex][lineLen-1].indexOf(" ")==-1 && e.keyCode!=8 && e.keyCode!=46 && e.keyCode!=33 && e.keyCode!=34 && e.keyCode!=35 && e.keyCode!=36 && lineIndex != 4 && newLines<5)
            {
                // to bring the word in next line
                var str = $("#"+textAreaId).val(), replacement = '\n';
                str = str.replace(/ ([^ ]*)$/,replacement+'$1');
                $("#"+textAreaId).val(str);

            }
            else
            if(e.keyCode!=8 && e.keyCode!=46 && e.keyCode!=33 && e.keyCode!=34 && e.keyCode!=35 && e.keyCode!=36 && lineIndex!=4 && newLines<5)
            {
                // to insert next line              
                insertTextAtCaret(document.getElementById(textAreaId), "\n");
            }


        }

        if(e.keyCode == 13 && newLines >= 5) 
        {
            //linesUsed.css('color', 'red');
            e.preventDefault();
            return false;
        }

}
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1 Answer

  1. Editorial Team
    function charCountTextarea(textAreaId,e,limit,lineLen)
{   

    var code = e.charCode || e.keyCode;

    newLines = $("#"+textAreaId).val().split("\n").length;
    var t = $("#"+textAreaId)[0];
    var lineIndex = t.value.substr(0, t.selectionStart).split("\n").length-1;
    console.log('val t :'+$("#"+textAreaId).val()+' line index : '+lineIndex+' new lines '+newLines);

    if(lineIndex == 10 && $("#"+textAreaId).val().split("\n")[lineIndex].length>(lineLen+1) && code!=8 && code!=46 && code!=33 && code!=34 && code!=35 && code!=36 && code!=37 && code!=38 && code!=39 && code!=40)
    {
        $("#"+textAreaId).val(($("#"+textAreaId).val()).substring(0, $("#"+textAreaId).val().length - 1));
        alert('You are reached to limit');
        return false;
    }

    if(lineIndex<5)
    {
        $("#"+textAreaId).val($("#"+textAreaId).val().wordWrap(lineLen, "\n", 0));
    }
    var countLine1 = $("#"+textAreaId).val().split("\n")[0].length;

    if($("#"+textAreaId).val().split("\n")[lineIndex].length>lineLen)  // which will count the total line char condition
    {
        console.log("In condition : ");
        if(code!=8 && code!=46 && code!=33 && code!=34 && code!=35 && code!=36 && code!=37 && code!=38 && code!=39 && code!=40)
        {
            // to insert next line              
            insertTextAtCaret(document.getElementById(textAreaId), "\n");
        }
    }
}
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