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JavaScript - Recursion In Methods
Hi,
can anyone tell me... Code: function Obj() {
this.recursiveMethod=function () {
//...how to invoke Obj.recursiveMethod from here?
}
}
Gus Similar Tutorialsthis code: Code: $(document).ready(function() {
$('body').click(function(evt) {
if(evt.target.nodeName === 'A' && $(evt.target).hasClass('cross-link')) {
$('a[href=#2]').trigger('click'); } });});
gives me and error of "too much recursion" how can i solve this? hello every one , i'm new and i hoped u could help me with my code I keep getting the same message "too much recursion" and i really don't know what is wrong , my friend and i codded the same way ,but it works for her not for me , here is the code : [merge sort algorithm] Code: var A=[2,999,45,23,17,879];
var B=[];
var C=[];
var i;
var j;
var k;
var x=0;
var mergesort_counter=0;
var merge_counter=0;
mergesort(A);
//=========================================================
//document.write( "<h2>mergesort</h2><p>", A, "</p>" );
function mergesort(A){
var n=A.length;
mergesort_counter++; //count mergesort calls
document.write( "<h2>mergesort</h2><p>", A, "</p>" );
var mid=Math.floor(n/2);
if (n>1){
for (i=0;i<mid;i++){
B[i]=A[i];}
for(j=mid;j<n;j++){
C[x]=A[j]; x++;}
mergesort(B);
mergesort(C);
merge(B,C,A);}
else document.write("the list is too short ");}
function merge(B,C,A){
merge_counter++; //count merge calls
i=0;k=0;j=0;
while( i<B.length && j<C.length ){
if (B[i]<=C[j]){
A[k]=B[i];
i++;}
else{
A[k]=C[j];
j++;}k++;}
if(i==B.length)
for (var l=j; l<C.length ; l++)
{A[k]=C[l]; k++;}
else for (var l=i; l<B.length ; l++)
{A[k]=B[l]; k++;}
document.write( "<h3>merge</h3><p>", A, "</p>" )}
Hey im having a problem recursively calling my function. What I want to do is to change MyImages[0-14] with a timeout between them. Here is my code. Code: function swapImage(i) {
if(i < 15)
{
MyImages[i].src = "red_dot.gif";
setTimeout("swapImage(i+1)",500);
}
}
The problem is that it will only change MyImages[0] and MyImages[1] Code: function checkifischild(draggedElement,destination)
{
$getid = $("#" + destination).attr("class");
var __temp = $getid.split(' ');
console.log(__temp)
for(i = 0;i < __temp.length; i++){//for the length of the classes
if(__temp[i].match("child-of-"))
{//check if its a child
parent = __temp[i].substring(9);//get the parents node
if(draggedElement == parent)
{
console.log('yes');
return false;
}
}
}
checkifischild(draggedElement,parent)
}
i have the following function basically what it does it gets 2 parameters node-23,node-17 for example it finds the classes of node-17 and splits them up ["child-of-node-16", "initialized", "ui-droppable", "expanded"] ["child-of-node-19", "initialized", "parent", "expanded", "ui-droppable"] ["child-of-node-23", "initialized", "parent", "expanded", "ui-droppable"] so i compare each time the first parameter along with the substring of the child-of and if they are the same its returns false now my problem is if i call the function just like this checkifischild(node-23,node-17) it works i get in the console yes for example if i do this tho if(checkifischild(node-23,node-17) == false) it fails :? any ideas will be appreciated thxxx Hello I am trying to create a family tree, parents / grandparents etc, of a single person... My database etc is already working but I cannot find any working examples that I can make sense of... Each of my records has a name, dob and id of each parent.... How can I get X generations from this.. I thought something like this might work.. GetParents For each parent GetParents And so on... But I have no idea how to put this into code... Any suggestions to put me on the right line would be greatly appreciated Thanks Well, I clearly haven't the experience with javascript to understand why I can't do this: Code: function bubbleSortKernel(a, b) {
if (b < 50) {
swap(a, b);
draw();
setTimeout("bubbleSortKernel(++a, ++b)", 200);
}
}
where Code: swap(a, b) does just what it says: swaps the two elements in an array, and Code: draw() looks about like this: Code: function draw() {
if (ctx != null) {
ctx.clearRect(0, 0, width, height);
for (var i = 0; i < rectangles.length; i++) {
ctx.fillRect(x, rectangles[i][0], rectangles[i][1], rectangles[i][2]);
}
}
}
I'm newer to javascript that other things, and this seems perfectly legal to me. I'm looking for someone who knows more that I and can explain what I'm missing. I'm guessing my timeout doesn't really work like I think it does, but I've gotten so frustrated I can't see the forest for the trees. Any help or nudge is greatly appreciated. Thanks! Hi, I am having trouble with a recursive function I created to list out the indexes and values of various nested objects. Code: var macros={
CTRL: {
ALT: {
ENTER: "<br />",
P: "<p>.</p>",
A: "<a href=\"\">.</a>",
_1: "<h1>.</h1>",
_2: "<h2>.</h2>",
_3: "<h3>.</h3>",
_4: "<h4>.</h4>",
_5: "<h5>.</h5>",
_6: "<h6>.</h6>"
}
}
};
I want to print out the whole 'bread crumb trail' to each object, ie CTRL ALT 6: <h6>.</h6>, but at the moment my function prints out CTRL ALT twice for 'ENTER' and then never again. The function: Code: function printObj(obj) {
for(i in obj) {
var n=i.replace("_", "");
document.write(n);
if(typeof obj[i]=="string") {
document.write(":");
document.write(" "+obj[i].replace(/</g, "<").replace(/>/g, ">"));
}
else {
document.write(n);
}
if(typeof obj[i]=="object") printObj(obj[i]);
document.write("\n");
}
}
printObj(macros);
The current output: Code: CTRLCTRLALTALTENTER: <br /> P: <p>.</p> A: <a href="">.</a> 1: <h1>.</h1> 2: <h2>.</h2> 3: <h3>.</h3> 4: <h4>.</h4> 5: <h5>.</h5> 6: <h6>.</h6> Any advice would be appreciated. Cheers, Gus well, when i do this fucntion: function scroll(){ window.scroll(0,60) } i get a javascript error: Error: too much recursion well, what is wrong? what does that mean? how do i fix it? thanks for any help My question is about the following javascript function that converts 15 digit salesforce IDs to 18 digit salesforce IDs. The function was originally posted here. Developer 1 wrote the function: function convertToCaseInsensitiveId(id) { var hash = ''; for (var c = 0; c < 3; c++) { var h = 0; for (var i = 0; i < 5; i++) { var ch = id.charCodeAt(i + c * 5); if (ch >= 65 && ch <= 91) h += Math.pow(2, i); } hash += String.fromCharCode(h > 26 ? h + 48 - 26 : h + 65); } return id + hash; } Developer 2 said: Since the checksum numbers are mapped to AB..YZ012345, 25 gives Z. The following line > hash += String.fromCharCode(h > 26 ? h + 48 - 26 : h + 65); should be > hash += String.fromCharCode(h > 25 ? h + 48 - 26 : h + 65); otherwise 26 would be mapped to opening bracket (ASCII # 91). Which developer's solution is correct? I have a javascript assignment I am having difficulties with. I have most of it complete but need some assistant with the last portion and that is to get my display function to work. I am sure that this is something I should know how to do but for the life of me can't seem to figure out and just need a little guidance. Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Lab03</title>
<h1> Person Information </h1>
<script type= "text/javascript" charset= "utf-8">
function Person( ) {
this.lastname = ' ';
this.firstname= ' ';
this.areacode= ' ';
this.phone_number= ' ';
this.show_person = ' ';
}
</script>
<script type= "text/javascript" charset= "utf-8">
var per1 = new Person
function getInput( ) {
lastname= prompt("please enter your last name: ");
firstname= prompt("please enter your first name: ");
areacode= prompt("please enter your area code: ");
phone_number= prompt ("Please enter your phone number (ex:888-8888): ");
return per1;
}
per1= getInput( );
</script>
</head>
<body>
<script type ="text/javascript" charset= "utf-8">
function show_person( ){
if( firstname == "" && lastname == "" )
{
document.writeln( "Name: Unknown" + "<br/>" );
}
else if( firstname == 'null' && lastname == 'null' )
{
document.writeln( "Name: Unknown" + "<br/>" );
}
else if ( firstname == "" || lastname == "")
{
document.writeln("Name: " + lastname);
document.writeln(firstname + "<br/>");
}
else if ( firstname == 'null' || lastname == 'null')
{
document.writeln("Name: " + lastname);
document.writeln(firstname + "<br/>");
}
else
{
document.writeln("Name: " + lastname + ", ");
document.writeln(firstname + "<br/>");
}
else if ( areacode == "" || phone_number == "" )
{
document.writeln ("Phone: ");
}
else if ( areacode == 'null' || phone_number == 'null' )
{
document.writeln ("Phone: ");
}
else
{
document.writeln('Phone: (' + areacode + ')');
document.writeln(phone_number);
}
return this.show;
}
</script>
<noscript>
<p>You must enable javascript to view all the features of this page.</p>
</noscript>
</body>
</html>
Can someone help me out and tell me what it is I need to do to make it work? I actually had it working when I was able to put all the code in the get function but was told I needed a separate display function so any input is greatly appreciated. I am building a website and I need to gather some information but I feel that prompts are unappealing. Maybe something like a form but it defines whatever is typed in as a variable?
I currently have the following code: <script> function strstr (haystack, needle, bool) { var pos1 = 0; haystack += ''; pos1 = haystack.indexOf(needle); if (pos1 == -1) { return false; } else{ if (bool){ return haystack.substr(0, pos1); } else{ amp1 = haystack.indexOf('&'); if((amp1 == -1) || pos1<amp1){ alert("here"); return haystack.slice(pos1); }else{ bString = haystack.slice( pos1 ); pos2 = bString.indexOf( needle ); amp2 = bString.indexOf('&'); //alert(bString.slice( pos2)); return bString.slice( pos2 ); }//if(amp>1){ }//if (bool){ }//if (pos == -1) { }//function strstr var story = strstr(top.location.href, "story="); var pinID = story.replace("story=", ""); alert(pinID); if(pinID>0){ document.getElementById('iFrame').src = 'http://www.domain.net/index.php?story='+pinID; }//if(pinID>0){ </script> It takes the website URL in Javascript and I wanted it to see if there is a "story=1" id and then pass it to the IFRAME. This works in a fashion, but i was trying to make it into a function so I could find and pass other variables, but anything after an & sign and it all fails? I was hoping to pick out variables from the top.location.ahref of "http://www.domain.com/index.php?story=1&category=2&something=3" for example? Any help would be appreciated. Many thanks Hello all. I have a script to prompt a user for 4 pieces of information. First name. Last name Area code. & Telephone number. My assignment was to do this, and put the information is as follows. If both, first name & last name are entered, store in object as last name,first name. If only one is entered. display without the comma. Also store telephone number in (XXX) XXX-XXXX format. I was told to use methods to do all of these things. Please take note I am in a VERY basic javascript class. Thanks in advance. CODE I HAVE SO FAR : head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <script type="text/javascript"> last=name=area=num=''; function info ( ) { last = prompt("Please enter your last name",''); name = prompt("Please enter your first name",''); area = prompt("Please enter your area code",''); num = prompt("Please enter your phone number",''); }; function Person (info) { this.name = name this.last = last this.area = area this.num = num } </script> <title></title> </head> <body> <script type="text/javascript"> info ( ); teacher = new Person(); tempString=''; document.writeln ( last ); document.writeln ( name) ; if(area==''||num==''){tempString='';} else{tempString = teacher.area +''+ teacher.num} document.writeln ( tempString); </script> Do many programmers remember most of the object properties and methods or do they use IDE or references to find those specific objects. I'm starting to learn Javascript and seeing all the different type of objects available can be depressing. Hi all! I'm pretty new to JavaScript and completely new to this forum. I'm James. Well uh, I'm not sure how to... I wanted to make something like this using javascript... Code: myObject.someMethod('something').anotherProperty
much like the Code: document.getElementById('someId').style.morestuff
But the thing is, I've been around every DOM whatnot I can find, I just can't seem to make it work. I kinda need it to make my own DOM for some API i'm writing. So I can write like... Code: function someGreatAPI(){
this.property1='';
this.property2='';
//...
this.method1 = function(var1){ //this should make my firstMethod
this.nestedProperty = 0;
this.nestedMethod = someFunction; //firstMethods nested method
}
}
//so I can use it like...
var obj = new someGreatAPI();
obj.method1(10).nestedMethod();
It has to be possible, it's possible with document.getelementbyid, right? it has to be. Thanks in advance. Hi everybody! I've a problem and I'm not able to solve it alone. I want to invoke java methods of a self written java programm with javascript. I found something like a tutorial (http://stanislavvitvitskiy.blogspot....lications.html), but it has not worked. I put my class file in a jar file and when I want to load it in javascript i get an error. I tried it this way: var url = new java.net.URL('C:/java_js' + '/xultest.jar'); var cl = new java.net.URLClassLoader(url); var aClass = java.lang.Class.forName("com.stan.XULDemo", true, cl); var inst = aClass.newInstance(); // Calling 'sum' function from java var a = inst.sum(2, 3); alert(a); // Will alert '5' Can anyone please help, and say to me what's wrong about it? Or does anyone have another aproach to call java methods with javascript? cheers, Martin Okay so I'm trying to come up with as many alternative methods to accomplish something. So I'm just seeking input from anyone who is willing to supply some. After the user clicks on a match type it'll know HOW MANY sides to the match there are so say for a singles match it'd have 2 sides (1 vs. 1) for a Triple Threat Match it'd have 3 sides (1 vs. 1 vs. 1) and so on. All matches have a stored field in the database of how many sides they have. So I'm thinking that I could have it create 3 divs (or something) down in the competitors area of how many sides there are in the match (separated by a VS. text block) and when the user selects a character from the dropdown and adds a character the user can maybe drag and drop the character's name to whatever side they choose. Its one idea. If you think of an EASIER more EFFICIENT way to do something like this and have an idea say something please or even if you can't let me know that you think it's a worth while idea. Code: <label for="matchtypedrop<?php echo $i+1 ?>">Match Type:</label>
<select class="dropdown" name="matchtypedrop<?php echo $i+1 ?>" id="matchtypedrop<?php echo $i+1 ?>" title="Match Type <?php echo $i+1 ?>">
<option value="0">- Select -</option>
<?php
$query = 'SELECT id, matchtype FROM matchtypes';
$result = mysqli_query ( $dbc, $query ); // Run The Query
while ( $row = mysqli_fetch_array ( $result, MYSQL_ASSOC ) ) {
print "<option value=\"".$row['id']."\">".$row['matchtype']."</option>\r";
}
?>
</select>
<label for="competitors<?php echo $i+1 ?>">Competitors:</label><ul id="competitors<?php echo $i+1 ?>" style="list-style: none; margin-left: 195px;"></ul>
<select class="dropdown" name="charactersdrop<?php echo $i+1 ?>" id="charactersdrop<?php echo $i+1 ?>" title="Characters Dropdown <?php echo $i+1 ?>" style="margin-left: 195px;">
<option value="0">- Select -</option>
<?php
$query = 'SELECT id, `character` FROM characters ORDER BY `character`';
$result = mysqli_query ( $dbc, $query ); // Run The Query
while ( $row = mysqli_fetch_array ( $result, MYSQL_ASSOC ) ) {
print "<option value=\"".$row['id']."\">".$row['character']."</option>\r";
}
?>
</select>
<input type="button" value="Add Character" class="" onclick="Competitors(<?php echo $i+1 ?>)"/>
I am trying to create a function that takes a users input in the form xx/xx/xxxx. Then I need to figure out a way to compare to a new date and give which day of the year it is when using: alert("This is the" +foo+ "day of the year."). Im alittle confused on how to take the users input and compare it somehow to give me the day of the year.
HI I'm new to tinymce. I'm using tinymce with jquery validate with remote Methods. (Remote Methods: http://docs.jquery.com/Plugins/Valid...Methods/remote) I'm using jquery validate to check if email address already has been enter into the database, once it check the email hasn't been entered. It then enter the email with the tinymce textarea. Right now the email address gets enter but tinymce textarea is undefined. I understand I have to uses the var content = tinyMCE.get (editor_id);, but its still enter as undefined, here is my code below: Code: <html>
<head>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript"
src="js/jquery.validate.js"></script>
<script type="text/javascript" src="js/tiny_mce.js"></script>
<script type="text/javascript">
tinyMCE.init({
// Location of TinyMCE script
// General options
mode : "textareas",
elements : "editor_id",
theme : "advanced",
theme_advanced_toolbar_location : "top",
theme_advanced_toolbar_align : "left",
theme_advanced_statusbar_location : "bottom",
theme_advanced_resizing : true,
content_css : "css/content.css",
});
<script type="text/javascript">
$(document).ready(function(){
var validator = $("#myform").validate({
rules: {
email: {
required: true,
minlength: 5,
remote: {
url: "test.php",
type: "post",
data: {
dataType: 'json',
email: function() {
return
$("#email").val();
},
content: function() {
return
$("content").val();
}
},
},
}
},
messages: {
sub_name: {
required: "Please enter a email
address",
minlength: "Your email addressmust be
at least 5 characters long",
remote: jQuery.format("Sorry but
'{0}' has already been added. Please try again.")
}
});
});
</script>
</head>
<body>
<form id="myform" action="" method="post">
<input type="text" name="email" id="email" size="15"/>
<textarea id="editor_id" name="editor_id" rows="15" cols="80"
></textarea>
<input type="submit" value="Submit"/>
</form>
Where do I added? Code: var content = tinyMCE.get('editor_id');
content = escape(content.getContent());
content = content.replace("+", "%2B");
content = content.replace("/", "%2F");
thanks |
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