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JavaScript - Really Quick Regex Question
I found this "game" that helps you practice regexp. I'm stuck on this one:
Similar TutorialsCode: var str = "12:34pm blah blah blah...",
timeTrim = str.match(/\d{1,2}:\d{2}(pm|am)\s/);
document.write(timeTrim); //12:34pm ,pm
Why does it match "pm" twice? The following code works as required - Code: if (result.marc.f695.subfields['a'] != "Electronic journals"
&& result.marc.f695.subfields['a'] != "electronic journals") {
return;
}
However, this isn't the most efficient way to code it, especially as I want to add further possibilities, most beginning with "[Ee]lectronic. I know I need to use regexes, and think the code I need to use is something like /[Ee]lectronic/, but I use JavaScript so rarely that I'm not sure how to build this into the above expression. Can anybody help? Urghh I've always done it this way but it's nagging me. Is there a better way of checking if a value is equal to 1 or 2 or 3 than doing it this way. Code: if(var === Cat || var === Dog || var === Chicken || var === Frog) Not working code ^ lol Cheers guys Was wondering if someone could help me quickly, i'm have a strange issue with a slideshow i have built in javascript. The slideshow works fine until you add any other image onto the page like a banner or anything. As soon as you do that when you click next on the slideshow that image or banner with change to the next picture instead of the desired image if that makes any sense... Would appreciate any help, thank you! here is the link to my practice website, so you can see what is going on pretty new to all of this.. http://dpetersen.net46.net/advancedw...l.html?agree=0 using jquery and cookie plugin. i made a popup window. when the user clicks on a check box the window closes, forwards them to a new page, and then sets a cookie. i need it so that when they go back to the original page (where the popup came from) if the browser detects the cookie then the popup does not occur. I do not know why this does not work because when I alert the value of the cookie out, it gives me the correct number. something must be wrong in my logic ? code on the base page. Code: <script type="text/javascript">
var test123 = $.cookie('FBCheck');
if ( test123 != 1212){
function popup(Site)
{
window.open(Site,'PopupName','toolbar=no,statusbar=no, location=no,scrollbars=no,resizable=no,width=350,height=500')
}
}
</script>
code on popup (both files are in same directory) Code: $(document).ready(function() {
$("#Cbox").click(function() {
window.open ("http://www.google.com", "Google");
window.close();
$.cookie('FBCheck', '1212', {expires: 365, path: '/'});
});
});
The jquery source is installed as is the plugin. Thanks so much for your help in advance! can I have a function and a variable be the same name in an object for instance Code: function someObject(){
this.canDoSomething;//a boolean variable
function canDoSomething(){
//set this.canDoSomething;
return this.canDoSomething;
}
}
or will this be a naming conflict? thanks I put the jquery script into my subdirectory. In the header which one is correct: Code: <script type="text/javascript" src="../jquery/jquery.js"></script> or Code: <script src="../jquery/jquery.js"></script> And there is this code: do I put this in the body and enclose it with the <script>tag? Code: $(function(){
// set interval for 5 minutes
setInterval(function(){
$.ajax({url: "keep-alive.php"});
}, 300000);
});
Hey everybody! I am trying to do a simple echo onclick, but despite what I try to do, it shows no errors, but won't work. I've tried things like: Code: echo "<div onclick=\"alert('test');\">t</div>";
echo '<div onclick="alert(\'test\');">t</div>';
But just can't seem to get it to work right. I'm trying to do this on a script that is being eval on the ajax request. Thus I'm having problems placing the ',", \ marks. Thanks for your time. Hi, Ever seen on the iphone where you have to slide the slider across the screen to unlock it? I have a duplicate of this using javascript but no matter what I try I cannot make it redirect. I want the page to be redirected after the slider has gone to the other side. Heres the HTML Code: <!DOCTYPE html> <head> <meta charset='UTF-8'> <title>Slide To Unlock</title> <link rel='stylesheet' href='css/style.css'> <script src='http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js'></script> <script src='http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/jquery-ui.min.js'></script> <script src='js/slidetounlock.js'></script> </head> <body> <div id="page-wrap"> <div id="well"> <h2><strong id="slider"></strong> <span>slide to unlock</span></h2> </div> </div> </body </html> And the javascript Code: $(function() {
$("#slider").draggable({
axis: 'x',
containment: 'parent',
drag: function(event, ui) {
if (ui.position.left > 550) {
$("#well").fadeOut();
} else {
// Apparently Safari isn't allowing partial opacity on text with background clip? Not sure.
// $("h2 span").css("opacity", 100 - (ui.position.left / 5))
}
},
stop: function(event, ui) {
if (ui.position.left < 551) {
$(this).animate({
left: 0
})
}
}
});
// The following credit: http://www.evanblack.com/blog/touch-slide-to-unlock/
$('#slider')[0].addEventListener('touchmove', function(event) {
event.preventDefault();
var el = event.target;
var touch = event.touches[0];
curX = touch.pageX - this.offsetLeft - 73;
if(curX <= 0) return;
if(curX > 550){
$('#well').fadeOut();
}
el.style.webkitTransform = 'translateX(' + curX + 'px)';
}, false);
$('#slider')[0].addEventListener('touchend', function(event) {
this.style.webkitTransition = '-webkit-transform 0.3s ease-in';
this.addEventListener( 'webkitTransitionEnd', function( event ) { this.style.webkitTransition = 'none'; }, false );
this.style.webkitTransform = 'translateX(0px)';
}, false);
});
Hi guys, just a quick question about a line break in JavaScript, where would I do it? If you see I have two math operators here and want them to be on two separate lines, were do I put the line break? Thanks Code: <!doctype html> <head> </head> <body> <script type="text/javascript"> var apples = 4+76; document.write(apples); var multiple = 54*11; document.write(multiple); </script> </body> </html> I have a simple issue that I cannot fix. The code bellow, is a while-loop with RGB color. It displays the word Hello 10 times id 10 different colors. The problem is I cannot get the correct colors displayed. I want the first Hello to be red and end up green in the last one. For some reason I cannot get the color combination correct, even after I put 255 for red and 192 for green. Can you please have a look and tell me what am I doing wrong? Thanks in advance Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Project 4 - Exercise 10</title>
</head>
<body>
<script language="JavaScript">
var r = 254;
var g = 254;
var b = 125;
for (i=1; i <= 10; i++)
{
document.write ("<font size=7 color = rgb(" + i + "," + g + ", "+b+")> Hello <br>");
}
</script>
</body>
</html>
i have a program where a user enters a temperature in farenheit and the program converts it to celcius. below is my code: Code: <html>
<head>
<title>JavaScript Assignment 4 Part 1</title>
</head>
<body>
<h2>Welcome to the Temperature Calculator!!</h2>
<script type="text/javascript">
var fTemp;
var number1;
var cTemp;
fTemp = window.prompt( "Please enter temperature in Farenheit:", "0" );
number1 = parseInt( fTemp );
cTemp = (5/9) * (number1 - 32);
document.writeln("The corresponding temperature in Celcius is: " + cTemp);
</script>
</body>
</html>
what i cant figure out is how to round off the temperature in celcius so that it doesnt display something like 26.666666666667 i tried putting math.round in "cTemp = (5/9) * (number1 - 32);" but when i do my program doesnt work any advice on how to go about doing this? thanks Here is what i'm trying to do and I'm not sure if it will work with a switch, but i'd be better than writing a million if else statements. Code: var = c
var = z
switch (c)
{
case c > 1 && < 10:
z = 5;
break;
case c > 10 && < 20:
z = 15;
break;
default:
z = 0;
}
I think you see what I'm trying to do. I have a variable 'c' and it is input by the user and I want to make variable 'z' set according to what 'c' is. I know the above code doesn't work, but I'm not sure why. I've tried a million different things to try and get it to work, but it always just goes to default when it displays 'z'. Any help would be great. Thanks. So i have this algorithm and im not sure how to translate it into javascript if (the Round Trip button is checked) double the fare my fare calculated works correctly based on the distance traveled, but how do i make it so that when round button is checked the fare gets doubled, im not quite sure how to make that a code function get_price() { var the_price=1000; if (this.speed=="500MGz") the_price+=200; else the_price+=100; if (this.hdspace=="15GB") the_price+=50; else the_price+=25; if (this.ram=="128MB") the_price+=150; else the_price+=75; return the_price; } function computer(speed,hdspace,ram) { this.speed=speed; this.hdspace=hdspace; this.ram=ram; this.price=get_price; } var work_computer=new computer("2GHz","80GB","1GB"); var home_computer=new computer("1.5GHz","40GB","512MB"); var laptop_computer=new computer("1GHz","20GB","256MB"); var work_computer_price=work_computer.price(); var home_computer_price=home_computer.price(); var laptop_computer=laptop_computer.price(); ___________________________________________________ In the above code, the line I'm having trouble with is marked red. Why is it that when I call the method using ... this.price = get_price; It works fine. But if I assign the object this.price with like this... this.price = get_price(); I get an error? Isn't get_price() a function? So shouldn't the parenthesis be included when the method is called? Why are we suppose to leave out the parenthesis?! I'm confused. Thanks! Is it possible to give an anchor tag an id and call it with GetElement? this is what I have tried: Code: <a id="link1" href="test.html">Part 1</a></li> Code: document.getElementById("link1").style.color = "blue";
This is my CSS: Code: A:link {
color:#ffffff;
font-size:14pt;
font-weight:bold;}
A:visited {
color:#ffff00;
font-size:14pt;
font-weight:bold;}
A:hover {
color:#6698ff;
font-size:14pt;
font-weight:bold;}
A:active {
color:#c0c0c0;
font-size:14pt;
font-weight:bold;}
Is it possible to have an input that points to some other function? For example: Code: function someFunction() {
alert('It worked.');
}
function doAnotherFunction(doIt, otherFunction) {
if (doIt == true) {
otherFunction();
}
}
<input type="button" value="test" onClick="doAnotherFunction(true, someFunction());">
Or would I need a switch statement and have all the various functions hardcoded? I need to change the source of an image but I can't seem to figure out how. I believe that I have the correct syntax, but it does not seem to be working. Maybe I am typing it in wrong or something. I try to test my javascript by typing the script: <strong>javascript:document.getElementById('img1').src='./images/image1.jpg';</strong> into the address bar. Nothing happens. I also try to test it out by putting this on the page, but once again, nothing happens. Code: <script type="text/javascript"><!--
document.getElementById('im1').src="./scripts/'.$upload_image.'";
//--></script>
This is what my HTML code looks like: Code: <img src="./images/temp_wizard_picture.gif" alt="" style="padding:4px; background:#fff; border:1px #bbb solid;" id="img1" /> Can somebody please fill me in on what I am doing wrong. Thank you. Hi, I'm using this site Translator Editor - LingoJam I'm trying to use the regex portion of the site (click regex on the page that link goes to) to create a substitution cipher - a translates to o, etc. so far I have Code: /a/g -> o /o/g -> u Theoretically, that'd mean when I typed in "a", it would translate to "o", and when I typed in "o", it would translate to "u". Trouble is, it doesn't know when to stop. I type in "a" and it immediately returns "u", because it substitutes the "o" that it should end up as for the "u". Any help on this matter would be appreciated. Thank you. Reply With Quote 12-29-2014, 08:34 AM #2 Philip M View Profile View Forum Posts Supreme Master coder! Join Date Jun 2002 Location London, England Posts 18,371 Thanks 204 Thanked 2,573 Times in 2,551 Posts That is bound to occur if you use onkeyup to translate the letter immediately it is typed. You should create the cyphered text once the whole message is complete. All advice is supplied packaged by intellectual weight, and not by volume. Contents may settle slightly in transit. I am creating a userscript and trying to take the following: Arian Foster (Hou - RB) and end up just with the team name: Hou You can't remove by index (which I would be able to do), because it might be K instead of RB or NO instead of Hou. I am assuming that you use Regex and the replace function to do so, but I am struggling with understanding all Regex symbols. Can someone help me with this and explain it briefly? I would appreciate it. |
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