I have a string - project description ( as part of an object ) coming from a user form submission that is shown on a page of a report. If the line numbers exceed 24 I want to show the rest of the string on a new page. My initial idea was to cut it based on characters but this can't be done precisely as if line breaks are made when submitting the form, the characters can't be calculated as we don´t know if the line break was made in the middle of a line or the end or wherever. I don't know what could be the solution?
How can I cut a string based on number of lines?
This is what I have done so far:
function countLines (el) {
let projectDetails = $rootScope.report.description;
var el = document.getElementById(el);
var divHeight = el.offsetHeight
var lines = divHeight / 17;
//console.log("Lines counted: " + lines);
if(lines > 24) {
$scope.secondDescriptionPage = true;
$scope.projectDetailsTextFirstPart = // this should be calculated
//$scope.projectDetailsTextSecondPart = // this should be calculated )
}
}
With the -webkit-line-clamp CSS property you can cut text by a certain number of lines. See MDN for details. It will not work in IE11 however.
I need to make a textbox with in there a word when i click on a button that word needs to convert into numbers useing charAt and that number needs to get +2 and than converted back into words and that word needs to get alerted i dont know what to do i find this really hard i made a function that is useless but i just want to show you what i did please help :)
function codeer(){
var woord2 = document.getElementById("woord")
var woordterug = woord2.charAt(0)
var woord234 = document.getElementById("woord");
var woord23 = woord234.charAt(str.length+2);
}
You could get the char code with String#charCodeAt from the character add two and build a new string with String.fromCharCode.
function codeer() {
var woord = document.getElementById("woord").value,
coded = '',
i;
for (i = 0; i < woord.length; i++) {
coded += String.fromCharCode(woord.charCodeAt(i) + 2);
}
console.log(coded);
}
<input id="woord" /> <button onclick="codeer()">cooder</button>
You should search the internet for a JavaScript rot13 example. In that code, you just need to replace the 13 with a 2, and it should work.
so my script generates a big blob of "Piano Notes" which are similar to...
var songNotes = "...";
the large Piano notes content
and my problem is between the piano notes which i need [also in the fiddle] there are empty ",," and decimal numbers.. so i cant figure out how to remove the empty
,, and decimals as big as
"1.0416666666642413,0.625,0,g3,1498.9583333333358,,0,c3,1.0416666666642413,0.625,0,c3"
and i want them removed except the the needed words which are
var theRightOnes = "s2,as2,cs3,ds3,fs3,gs3,as3,gs3,cs4,ds4,fs4,cs3,as4,gs4,ds5,a2,cs4,b2,c3,a3,ds4,b3,c4,as3,gs2,e3,c3,c4,cs3,ds3,a4,fs3,gs3,as3,g3,f3,b4,c5,a3,d4,as2,e4,g4,d3,b3,b2,f4,a2,d4,e4,cs5,gs1,e2,c2,c3,cs2,ds2,a3,fs2,gs2,as2,g2,f2,b3,c4,a2,d3,as1,e3,g3,d2,b2,b1,f3,a1,d5,e5";
so can anyone give me a clue on how this can be accomplished?
if anyone needs more info then i am ready oblige to do so..
Regards - Adarsh Hegde
var notesArr = songNotes.split(",");
var len = notesArr.length;
while(len--) {
if(!notesArr[len] || !isNaN(parseInt(notesArr[len], 10))) {
notesArr.splice(len, 1);
}
}
songNotes = notesArr.join(",");
I think you want to remove all the numbers from notes.
You can say like bellow
var notes = songNotes.split(",").filter(function(note){
return isNaN(note);
});
console.log(notes);
You can use Array.filter (see MDN) to weed out unwanted values:
var wantedNotes = songNotes.split(',')
.filter(function (v) {
return isNaN(+v) && v.trim().length
});
jsFiddle
just use regular expression,like this:
var a = "1.0416666666642413,0.625,0,g3,1498.9583333333358,,0,c3,1.0416666666642413,0.625,0,c3";
console.log(a.replace(/\b(\d+(\.\d+)?),+/g,""));
I can not find the solution. I've tried to assume that count of \n symbols is the same with lines count, but sometimes this method works incorrectly (e.g. after paste text from clipboard)
i've tried different jQuery plugins, but still unsuccessfully.
any idea?
Why not just do this:
Take the text content only up to selectionStart then make it an array by splitting at eol
p = $('#Form_config').val().substr(0, $('#Form_config')[0].selectionStart).split("\n");
// line is the number of lines
line = p.length;
// col is the length of the last line
col = p[p.length-1].length;
Try to use this:
var pos = getCaretPos(document.formName.textareaName);
function getCaretPos(obj)
{
obj.focus();
if(obj.selectionStart) return obj.selectionStart;//Gecko
else if (document.selection)//IE
{
var sel = document.selection.createRange();
var clone = sel.duplicate();
sel.collapse(true);
clone.moveToElementText(obj);
clone.setEndPoint('EndToEnd', sel);
return clone.text.length;
}
return 0;
}
The descision is not so simple and requieres large amount of javascript code. So, finally i've used CodeMirror Project by Marijn Haverbeke (https://github.com/marijnh/CodeMirror)
I have a text area that I need to parse. Each new line needs to be pulled out and an operation needs to be performed on it. After the operation is done the operation needs to be run on the next line. This is what I have at the moment. I know the indexOf search won't work because it's searching character by character.
function convertLines()
{
trueinput = document.getElementById(8).value; //get users input
length = trueinput.length; //getting the length of the user input
newinput=trueinput; //I know this looks silly but I'm using all of this later
userinput=newinput;
multiplelines=false; //this is a check to see if I should use the if statement later
for (var i = 0; i < length; i++) //loop threw each char in user input
{
teste=newinput.charAt(i); //gets the char at position i
if (teste.indexOf("<br />") != -1) //checks if the char is the same
{
//line break is found parse it out and run operation on it
userinput = newinput.substring(0,i+1);
submitinput(userinput);
newinput=newinput.substring(i+1);
multiplelines=true;
}
}
if (multiplelines==false)
submitinput(userinput);
}
So for the most part it is taking the userinput. If it has multiply lines it will run threw each line and seperatly and run submitinput. If you guys can help me I'd be eternally thankful. If you have any questions please ask
Line breaks within the value of a textarea are represented by line break characters (\r\n in most browsers, \n in IE and Opera) rather than an HTML <br> element, so you can get the individual lines by normalizing the line breaks to \n and then calling the split() method on the textarea's value. Here is a utility function that calls a function for every line of a textarea value:
function actOnEachLine(textarea, func) {
var lines = textarea.value.replace(/\r\n/g, "\n").split("\n");
var newLines, i;
// Use the map() method of Array where available
if (typeof lines.map != "undefined") {
newLines = lines.map(func);
} else {
newLines = [];
i = lines.length;
while (i--) {
newLines[i] = func(lines[i]);
}
}
textarea.value = newLines.join("\r\n");
}
var textarea = document.getElementById("your_textarea");
actOnEachLine(textarea, function(line) {
return "[START]" + line + "[END]";
});
If user is using enter key to go to next line in your text-area you can write,
var textAreaString = textarea.value;
textAreaString = textAreaString.replace(/\n\r/g,"<br />");
textAreaString = textAreaString.replace(/\n/g,"<br />");
textarea.value = textAreaString;
to simplify the answers, here is another approach..
var texta = document.getElementById('w3review');
function conv (el_id, dest_id){
var dest = document.getElementById(dest_id),
texta = document.getElementById(el_id),
val = texta.value.replace(/\n\r/g,"<br />").replace(/\n/g,"<br />");
dest.innerHTML = val;
}
<textarea id="targetted_textarea" rows="6" cols="50">
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</textarea>
<button onclick="conv('targetted_textarea','destination')" id="convert">Convert</button>
<div id="destination">Had not been fetched yet click convert to fetch ..!</div>