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JavaScript - Help With Javascript Collision?
Hello,
I'm making a simple javascript game. There is a square stage with a bouncing ball in it. The user can move a paddle along the bottom of the square using the arrow keys to hit the ball, and make it continue bouncing. If the user's paddle doesn't reach the ball in time, it falls to ground, game over. However, my collision isn't working. The ball falls right through my paddle. What am I doing wrong? Code is he <!DOCTYPE HTML PUBLIC> <html> <head> <title>Bask-A-Bounce!</title> <style> #stage{ position: absolute; top: 100; left: 100; border: 3px solid black; width: 500; height: 500; background-color: #E0FFFF; } #paddle{ position: absolute; top: 470; left: 228; width: 64; height: 16; } #ball{ position: absolute; top: 4; left: 200; width: 16; height: 16; } #score{ position: absolute; top: 486; left: 0; width: 500; height: 14; background-color: rgb(32,128,64); } </style> <script language="JavaScript"> //get info, process data, update screen objects //instance vars var ball; var paddle; var score; //initial speeds var dx = 5; var dy = 5; var currentScore = 0; var timer; //set initial conditions for ball and paddle var paddleLeft = 228; var ballLeft = 300; var ballTop = 4; function init(){ //instantiate HTML object instance vars ball = document.getElementById('ball'); paddle = document.getElementById('paddle'); score = document.getElementById('score'); //register key listener with document object document.onkeydown = keyListener; //start the game loop start(); } function keyListener(e){ if(!e){ //for IE e = window.event; } if(e.keyCode==37 && paddleLeft > 0){ //keyCode 37 is left arrow paddleLeft -= 4; paddle.style.left = paddleLeft + 'px'; } if(e.keyCode==39 && paddleLeft < 436){ //keyCode 39 is right arrow paddleLeft += 4; paddle.style.left = paddleLeft + 'px'; } } function start(){ //game loop detectCollisions(); render(); //end conditions if(ballTop < 470){ //still in play - keep the loop going timer = setTimeout('start()',50); } else{ gameOver(); } } function detectCollisions(){ //just reflect the ball on a collision //a more robust engine could change trajectory of ball based //on where the ball hits the paddle if(collisionX()) dx = dx * -1; if(collisionY()) dy = dy * -1; } function collisionX(){ //check left and right boundaries if(ballLeft < 4 || ballLeft > 462) return true; return false; } function collisionY(){ //check if at top of playing area if(ballTop < 4) return true; //check to see if ball collided with paddle if(ballTop > 470){ if(ballLeft > paddleLeft && ballLeft < paddleLeft + 64) return true; } return false; } function render(){ moveBall(); updateScore(); } function moveBall(){ ballLeft += dx; ballTop += dy; ball.style.left = ballLeft; ball.style.top = ballTop; } function updateScore(){ currentScore += 5; score.innerHTML = 'Sco ' + currentScore; } function difficulty(){ //as the game progresses, increase magnitude of the vertical speed if(currentScore % 1000 == 0){ if(dy > 0) dy += 1; else dy -= 1; } } function gameOver(){ //end the game by clearing the timer, modifying the score label clearTimeout(timer); score.innerHTML += " Game Over"; score.style.backgroundColor = 'rgb(128,0,0)'; } </script> </head> <body onLoad="init()"> <h1>Bask-A-Bounce</h1> <div id="stage"> <div id="paddle"> <img src="paddle1.gif"> </div> <div id="ball"> <img src="ball.gif"> </div> <div id="score"> Sco 0 </div> </div> <embed name="SJT" src="SJT.mp3" loop="false" hidden="true" autostart="true"> </embed> </body> </html> Similar Tutorialsi have a simple collision if statement in the main interval in a javascript game. The problem is, it only sometime works, as in i have to shoot at zombies multiple times for them to disappear, when it should only take 1 bullet. i have arrays for the players bullets x and y values, and 5 zombies x and y values(4 total arrays). The collision code is at the bottom of the main() function. here is the code: Code: var missed = 0;
var score = 0;
var on = 1;
var bulletx = [];
var bullety = [];
var zombiex = [700,600,800,1000,900];
var zombiey = [0,100,300,200,50];
function draw(image, x, y){
var canvas = document.getElementById("game");
var context = canvas.getContext("2d");
var imageObj = new Image();
imageObj.onload = function() {
context.drawImage(imageObj, x, y);
};
imageObj.src = image;
}
document.onkeydown = checkKey;
function checkKey(e) {
if(on === 1){
if(on === 1){
e = e || window.event;
if (e.keyCode == '40') {
down();
}else if (e.keyCode == '38') {
up();
}else if(e.keyCode == '32'){
bullety.push(y+50);
bulletx.push(100);
score = score - 1;
}
}
}
}
var y = 300;
function down(){
y = y+50;
draw("player.png", 0, y);
}
function up(){
y = y-50;
draw("player.png", 0, y);
}
draw("player.png",0,y);
function main(){
draw("background.png",0,0);
draw("player.png",0,y);
for(i = 0; i < 5; i++){
draw("zombie.png",zombiex[i],zombiey[i]);
zombiex[i] = zombiex[i] - 5;
if(zombiex[i] < -100){
zombiex[i] = 600;
zombiey[i] = Math.random()*450
missed = missed+1;
}
}
if(missed === 5){
clearInterval(mainint);
alert("5 zombies passed you, and America has fallen");
alert("sco "+score);
on = 0;
}
for(i = 0; i < bulletx.length; i++){
draw("background.png",0,0);
draw("bullet.png",bulletx[i],bullety[i]);
bulletx[i] = bulletx[i]+30;
if(bulletx[i] > 700){
bulletx.splice(i,1);
bullety.splice(i,1);
}
if(bulletx[i] > zombiex[i] && bullety[i] > zombiey[i]-20 && bullety[i] < zombiey[i]+70){
zombiex[i] = 600;
zombiey[i] = Math.random()*450
score = score + 10;
}
}
}
var mainint = setInterval(function(){main();}, 50);
hey guys i'm making a lunar lander game using javascript.i want the player to land the spaceship on a black line i've drawn. but i have problems getting it right.when the player lands it properly in the line i want it to display a dialogue box which says u landed it perfectly.but the problem is even if i land it outside the line it gives me that message.so after spending sometime with it i figured out that my if statement is not working properly.it doesn't take the value from my x axis and only considers the value from my y axis.for eg lets say i drew the line from 560px to 600px on the x axis and its located at 700px on the y axis and this is my if statement if((TopPos>695)&&(rightPos>560)&&(rightPos<600)) { alert('you landed perfectly') } this is supposed to work but if i go above 600px but still maintains the height above 695 it says i have won.i have included the code could some point me out where i'm making the mistake thank you . Code: <html>
<head>
<title>Lunar lander</title>
<script language="JavaScript">
var TopPos=100;
var fuel = 300;
var gravity = 0.0001;
var speed = 0.0005;
var moveBy = 366;
var Xpix = 1000;
function animation(){
TopPos +=gravity
document.getElementById("divlander").style.top = TopPos + "px";
if ((TopPos>604)&&(Xpix<526)){
alert('win');
}
else if ((moveBy<100)&&(moveBy>500)){
alert('crashed');
}
if(TopPos<610)
window.setTimeout("animation()",30);
gravity +=0.03;
gravity += speed;
var f = document.game.fuel.value;
f--;
document.game.fuel.value = f;
if (f<=0){
document.game.fuel.value ="0";
gravity=10;
gr=0;
speed=10;
f=1;
alert('out of fuel');
}
}
function moveObj(name, Xpix, Ypix)
{
obj = document.getElementById(name);
px = parseInt(obj.style.left) + Xpix;
py = parseInt(obj.style.top) + Ypix;
obj.style.left = px;
obj.style.top = py;
}
function ProcessKeypress(e)
{
var myObj = "divlander";
var moveBy = 10;
if (e.keyCode) keycode=e.keyCode;
else keycode=e.which;
ch=String.fromCharCode(keycode);
if(ch=='a') moveObj(myObj, -moveBy, 0);
else if(ch=='d') moveObj(myObj, moveBy, 0);
else if(ch=='w') gravity = -1;
}
</script>
<form name='game'>
<body onKeyPress="ProcessKeypress(event);">
<body onload ="animation();">
<input type=button value='200' name="fuel">
<p><img id="divlander" style="z-index: 0; left: 1000px; position: absolute; top: 100px" img src="lunar_lander_72dpi2.png"></p>
<img src="Serenity2.jpg";>
<p><<body>
</body>
</form>
</html>
so basically I have a div that contains the image of a circle and I need to check if the mouse is touching the circle. what approach should I take to this? I need to call another function when the mouse leaves the circle (which will be a square speaking physically) I would assume it has to do with radius, but I am not really sure how to do this with a circle shape. thanks a ton! im making a sniper game where you shoot apples, and i need to check when the crosshairs are on the apple whenever the user clicks the canvas (note that the onclick listener is in the html, thats why you dont see it, and ive checked that it works). This code doesnt work Code: var crosshair = [250, 200];
var appley = [-100,-400,0,-250];
var applex = [0,200,400,500];
var canvas = document.getElementById("game");
function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var context = canvas.getContext('2d');
canvas.addEventListener('mousemove', function(evt) {
var mousePos = getMousePos(canvas, evt);
crosshair[0] = mousePos.x;
crosshair[1] = mousePos.y;
}, false);
function draw(x, y, image){
var context = canvas.getContext("2d");
var imageObj = new Image();
imageObj.onload = function() {
context.drawImage(imageObj, x, y);
};
imageObj.src = image;
}
function shoot(){
for(i = 0; i < 4; i++){
if(crosshair[0]-400 > applex[i] && crosshair[0]-400 < applex[i]+80 && // THIS IS THE COLLISION
crosshair[1]-300 > appley[i] && crosshair[1]-300 < appley[i]+80){
appley = 500;
alert("hit");
}
}
}
function main(){
draw(0,0,"background.jpg");
for(i = 0; i < 4; i++){
draw(applex[i],appley[i],"apple.png");
appley[i] = appley[i]+10;
if(appley[i] > 450){
appley[i] = -50;
applex[i] = Math.floor((Math.random() * 5) + 1)*100;
}
}
draw(crosshair[0]-400, crosshair[1]-300, "crosshair.png");
}
var mainint = setInterval(function(){main();}, 100);
help plz I am having troubles getting two polygons to collide and react properly. For now, I just have two boxes. One box is stationary in the center of my canvas while another one is controlled by the keypad arrow keys and flies around. I have no problem detecting when my flying box intersects the stationary box. However, what I am having troubles with is getting the flying box to hit the stationary box and react as if it was an actual object blocking it's path. For now I just need to have my flying box be able to hit the stationary box on any side and have the stationary box block the flying box's motion. At some point, however, I will likely need to do this same kind of reaction between multiple edged 2d polygons. Can anyone help me with this simple box example and also help me track down a more complex scenario similar to this: http://www.codeproject.com/Articles/...sion-Detection This article seems to be exactly what I am looking for but it is in C#. The way the flying object just slides along the edge of the intersecting polygon is all I need my flying object to do. However, I need an example in javascript so that I can incorporate it into an HTML5 canvas object. i cant get collission detection to work. i tryed but it always caused an infinite loop. heres the code. Code: <html>
<!-- main file.-->
<head>
<title>lightning generator</title>
</head>
<body>
<canvas id='world' width='500' height='500' style='border: 1px solid black; padding:0;'></canvas>
<script type="text/javascript" src='world.js'></script>
<script type='text/javascript' src='eC.js'></script>
<script type='text/javascript' src='world.ground.js'></script>
<script type='text/javascript'>
world.bolt = {
}
;
world.bolt.paths = [];
// main obj inits
world.bolt.draw = function(){
var x, y;
for( var id = 0; id <= world.bolt.draw.num; id ++ ){
world.ctx.moveTo( world.bolt.paths[id].x[world.bolt.paths[id].x.length-1], world.bolt.paths[id].y[world.bolt.paths[id].y.length-1] );
var mdx=Math.floor(Math.random()*world.bolt.paths[id].mdx);
x = world.bolt.paths[id].x[world.bolt.paths[id].iters] + ((Math.random()<Math.random())?mdx:-mdx);
y = ++ world.bolt.paths[id].iters;
world.bolt.paths[id].x.push( x );
world.bolt.paths[id].y.push( y );
world.ctx.strokeStyle = world.bolt.paths[id].color;
world.ctx.lineTo( x, y );
world.ctx.stroke();
//world.ctx.beginPath();
} if(x%3==0){ world.ctx.fillStyle=world.skyColor;
world.ctx.fillRect(0,0,world.w,world.h);}
}
world.bolt.draw.num=-1;
world.bolt.cpath = function( x, y, mdx, srate, id, color ){
world.bolt.paths[id] = {
}
;
world.bolt.paths[id].iters = 0;
world.bolt.paths[id].x = [];
world.bolt.paths[id].y = [];
world.bolt.paths[id].x[0] = x;
world.bolt.paths[id].y[0] = y;
world.bolt.paths[id].mdx = mdx;
world.bolt.paths[id].srate = srate;
world.bolt.paths[id].color = color;
world.bolt.draw.num += 1;
}
world.bolt.cpath(250,0, 5,5,0,'rgba(255,255,150,.5)');
window.setInterval(world.bolt.draw,100)
window.setTimeout('world.bolt.cpath(125,0,5,5,1,"rgba(255,10,0,.5)")',1000);
</script>
</body>
</html>
Code: //world.js
var world = {
skyColor:'rgba(0,0,100,.009)'
}
;
world.canvas = document.getElementById( 'world' )
world.canvas.cstyle = document.defaultView.getComputedStyle( world.canvas, null )
world.w = parseInt( world.canvas.cstyle.width, 10 );
world.h = parseInt( world.canvas.cstyle.height, 10 );
world.ctx = world.canvas.getContext( '2d' );
finally, Code: // world.ground.js
world.ground = {
}
;
world.ground.level = [];
world.ground.make = function( GArray, length ){
world.ctx.strokeStyle = '#000000';
world.ground.level = [];
world.ctx.fillStyle = '#FFF';
world.ctx.fillRect( 0, 0, world.w, world.h );
world.ground.level = GArray;
for ( world.ground.make.i = 0; world.ground.make.i <= length; world.ground.make.i ++ ){
if ( GArray[world.ground.make.i + 1] === undefined ){
GArray[world.ground.make.i + 1] = GArray[world.ground.make.i];
}
world.ctx.moveTo( world.ground.make.i, ( world.h ) );
world.ctx.lineTo( world.ground.make.i, ( world.h - GArray[world.ground.make.i] ) );
}
world.ctx.stroke();
world.ctx.beginPath();
}
;
world.ground.create = function( func, width ){
func = ec( func );
if( func === false ){
alert( 'Pass equation as a string without the "y=", "f(x)=", "g(x)=" or similar.' );
return world;
}
if( func == 'perspicaciousness' ){
return world;
}
var temp = [];
for( var x = 0; x <= width; x ++ ){
temp[x] = eval( func );
}
world.ground.make( temp, width );
}
;
world.ground.create.test='4';
world.ground.create( world.ground.create.test, 500 );
in the end of world.bolt.cpath,there should be a way to use the local varis X and Y, and world.ground.js's world.ground.level[] to detect it. sorry for the gigantic length. thanks in advanced. the jsnerd Hello! I am trying to find a script that allows you to open multiple browser tabs and then close each of those tabs, either one by one or all at once. Does anyone know how to do this please? Thanks so much for your help. I want to have another go at Javascript. I have several books on the subject but I find that my eyesight is a major problem. Therefore I want to try an on-line solution, preferably free. I have Googled, but there are so many that I am almost dizzy with the choices. Perhaps someone could recommend one. Not too fussy visually. My knowledge is VERY basic. Frank Does anyone know how to make URL links that use Javascript still work when users have Javascript disabled on their browser? The only reason I'm using JS on a URL is because my link opens a PDF file, and I'm forcing it not to cache so users have the latest version. I tried the <script><noscript> tags, but I'm not sure if I'm using it correctly, as my URL completely disappears. Below is my HTML/Javascript code: <p class="download"> <script type="text/javascript">document.write("<span style=\"text-decoration: underline;\"><a href=\"javascript:void(0);\" onclick=\"window.open( 'http://www.webchild.com.au/mediakit/Direct_Media_Kit_Web.pdf?nocache='+ Math.floor( Math.random()*11 ) );\" >The Child Magazines Media Kit</a></span> (PDF 1 MB) ");</script> <noscript><span style="text-decoration: underline;"><a href="http://www.webchild.com.au/mediakit/Direct_Media_Kit_Web.pdf" >The Child Magazines Media Kit</a></span> (PDF 1 MB)</noscript> </p> Thanks for any help, Michael Hi Guys, I am new at JavaScript and start to do some tutorials.What I am trying to do here is prompting user to input a name and if the name was valid the page(document) will display with all objects like the button.But if user enter a wrong name then the button will be disabled! I create the following code but it did not work <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>New Web Project</title> <script language="JavaScript" type=""> function changeColor(){ document.bgColor = "Gray"; } </script> </head> <body> <script language="JavaScript" type="text/javascript"> var person = ""; person = prompt('What is Your Name:'); if (person == "Foo") { document.write("<h1 />Welcome " + person); document.bgColor = "Yellow"; } else { document.write("<h1 />Access Denied!!!!"); document.bgColor = "Red"; document.getElementById("gree").disabled = true; } </script> <div> <p/><input id="gree" type="button" value="Gray " onClick="changeColor();"> </div> </body> </html> as you can see I used the: document.getElementById("gree").disabled = true; but it did not work , could you please give an idea how I can solve this problem? Thanks Hi, I have the following code snippet: test.html ====== <script language="javascript" type="text/javascript"> var testVariable = "test"; </script> <script language="javascript" type="text/javascript" src="test.js"> </script> test.js ===== var testVariable = window.top.testVariable; In firefox, I'm able to access testvariable defined within test.html in test.js. But in chrome, test.js couldnot get the window.top.testVariable field defined in test.html. Can any one please let me know how i can make it work in chrome?. Am i missing something here?. Hey, I've got to make the values of some textboxes change the co-ordinates of my sprite on a canvas and havent a clue on how to do it, Here is my form with the two textboxes and submit button: <form> x: <input type="text" name="x" /><br /> y: <input type="text" name:"y" /><br /> <input type="submit" value="Submit"/><br /> </form> And i need it so that they change the values of these: //this shows where my sprite will start on the canvas var block_x; var block_y; searched the internet for hours and cant really find anything i understand or works. any help is much appreciated Hi Guys I am trying to modify the functionality of my page. I want to be able to activate this piece of code using another javascript function. This is the code I want to activate: Code: <script type="text/javascript"><!--
$('#button-cart').bind('click', function() {
$.ajax({
url: 'index.php?route=checkout/cart/update',
type: 'post',
data: $('.product-info input[type=\'text\'], .product-info input[type=\'hidden\'], .product-info input[type=\'radio\']:checked, .product-info input[type=\'checkbox\']:checked, .product-info select, .product-info textarea, .date_data input[type=\'text\']'),
dataType: 'json',
success: function(json) {
$('.success, .warning, .attention, information, .error').remove();
if (json['error']) {
if (json['error']['warning']) {
$('#notification').html('<div class="warning" style="display: none;">' + json['error']['warning'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
$('.warning').fadeIn('slow');
}
for (i in json['error']) {
$('#option-' + i).after('<span class="error">' + json['error'][i] + '</span>');
}
}
if (json['success']) {
$('#notification').html('<div class="success" style="display: none;">' + json['success'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
$('.success').fadeIn('slow');
$('#cart_total').html(json['total']);
$('html, body').animate({ scrollTop: 0 }, 'slow');
}
}
});
});
//--></script>
And this is how I want the format of the function to be: function testsession() { if there is a session called 'hiredate' { activate the script above } else { var el = document.getElementById("product_data"); } } I just dont know how to write this in javascript Could you help me if possible please I got an index.php Code:
<html>
<form action="bacakomik.php" method='post'>
<select name="kodekomik">
<option value='../komik1/|23'>Judul Komik1</option>
<option value="../komik2/|20">Judul Komik2</option>
<option value="../komik3/|10">Juduk Komik3</option>
<option value="../komik4/|20">Judul Komik4</option>
</select>
<input type="submit" />
</form>
<?php
echo ('<select>');
echo ('<option value= "'.$i.'">'.'Page '.$i.'</option>');
echo ('</select>');
?>
</html>
As you can see, each of the option brings specific value "../komik1/|23" komik1 is a directory | is a delimiter 23 is the pages in one chapter and can be considered also as how many images are there on a specific directory This is my bacakomik.php Code: <?php
$dirkomik = $_POST['kodekomik'];
$exploded = explode("|", $dirkomik);
echo ($exploded[0]); //picture directory
echo ("<br>");
echo ($exploded[1]); //total page in the comic
$pagecount = (int)$exploded[1];
//Take last posted value, process it right away
echo ('<FORM name="guideform"> ');
echo ('<select name="guidelinks">');
$i=1;
do {
echo ('<option value= "'.$i.'">'.'Page '.$i.'</option>');
$i= $i+1;
}while($i <= $pagecount); //Printing option and select
echo ("</select>");
?>
<input type="button" name="go" value="Go!" onClick="document.getElementById('im').src=document.guideform.guidelinks.options[document.guideform.guidelinks.selectedIndex].value+'.png';"> </FORM>
<img src="img0.jpg" id="im">
With the current code on bacakomik.php, I only can change the img src of id "im" in the same directory only. What I want is that the Javascript could "add" the "$exploded[0]" variable so that the picture can be loaded from different directory. Anyone can do this? I believe that the fix should be somewhere on input tag inside OnClick, or do you know where? Anyway, I found this on the net http://p2p.wrox.com/php-faqs/11606-q...avascript.html Please help me to those who can... I want to insert this js snippet Code: function addText(smiley) {
document.getElementById('message').value += " " + smiley + " ";
document.getElementById('message').focus();
return false;
}
to a loaded iframe with name&id chtifrm. I can access it & change embed something in its html via using something like: Code: $(parent.chtifrm.document.body).append('<div id=\"smly\" style=\"cursor:pointer;float:left;top:200px;display:none;position:absolute;\"><\/div>');
.... Code: parent.chtifrm.document.getElementById('chatbox_option_disco').style.display == 'none'
but how do I insert js in the head of loaded iframe? All -- I have a JavaScript config file called gameSetting.js which contains a bunch of variables which configures a particular game. I also have a shared JavaScript library which uses the variables in gameSetting.js, which I include like so: <script type="text/javascript" src="gameSetting.js" ></script> <script type="text/javascript" src="gameLibrary.js" ></script> In gameSetting.js I have: $(document).ready(function() { // call some functions / classes in gameLibrary.js } in Firefox, Safari, and Chrome, this works fine. However, in IE, when it's parsing gameSetting.js, it complains that the functions that live in gameLibrary.js aren't defined. When it gets to parsing gameLibrary.js, the variables in gameSetting.js are reported as not being defined. I've tried dynamically bootstrapping the gameLibrary file using this function in document.ready for dynamic load... $.getScript("gameLibrary.js"); However, the same problem still happens in IE, where when it parses the files individually it's not taking into context the file/variables that came before, so it's not an out of load order problem. My options a 1) collapsing all the functions in gameLibrary.js and variables in gameSetting.js into one file. However, this is not practical because this is dealing with literally hundreds of games, and having a gameLibrary.js in ONE location for ONE update is what makes most logical sense. 2) figure out a way to get this to work where variables in file1 are accessible to file2 in IE (as it seems they are in other browsers). jQuery seems to be able to have multiple plugins that all refer to the based jQuery-1.3.2.js, so I know there is a way to get this to work. Help appreciated. Nero I wrote a log function that took note of various function calls. Thinking that functions are first class objects, and objects have properties, I made the name of each logged function a property of that function, e.g., brightenInnerPara.name = "brightenInnerPara"; Every browser I tried (Firefox, MSIE, Opera, Chrome, Safari) accepted the assignment, no problem. In Firefox and MSIE, the result was what I wanted: brightenInnerPara.name == "brightenInnerPara" But in the others, the result was: brightenInnerPara.name == null Question 1. Which Javascript is correct here? I favor Firefox and MSIE, not merely because they were willing to give me what I wanted, but also because it makes no sense to accept an assignment statement without throwing an error and then give it a null semantics, like Chrome, Opera, and Safari did. I found a workaround, using assignments like this: brightenInnerPara.prototype.name = "brightenInnerPara"; To my surprise, that worked in every browser. But I don't know why. It seems that such assignments are enough to cause each function to have its own distinct prototype. Question 2. Just how inefficient is my workaround, and why does it work? I am having trouble modifying this to make the number of guesses limited to 5 and if guessed under 5 guesses prints pass otherwise prints failed. Thanks for the help. var mycolor = 'green'; var guess = ''; while (guess != mycolor){ guess = prompt("Guess my color:"); } println('You guessed it!'); I need help i want to make an area where it will show three boxes with news in them but it has arrows either side to slide to older and newer stories. I am very new to JavaScript and just wanted a push in the write direction to is this something that you would do in this lanuage or jQuery or something a like. Thanks |
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