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JavaScript - Some Line's Meaning?
the HTML code:
Code: <ul id="ul1"> <li>1111</li> <li>2222</li> </ul> <div id="div1"></div> the javascript code: Code: var oDiv=document.getElementById('div1');
oDiv.style.left=getPos(this).left+this.offsetWidth+'px';
oDiv.style.top=getPos(this).top+'px';
function getPos(obj){
var aPos={left: null, top: null};
while(obj)
{
aPos.left+=obj.offsetLeft;
aPos.top+=obj.offsetTop;
obj=obj.offsetParent;
}
return aPos;
}
why it write the while loop,and what's effection of the while loop obj=obj.offsetParent; what's this line meaning? Similar TutorialsThis prbl. appears only in IE: Code: l2 = obj.parentNode.getElementsByTagName("select")[0].value;
--> object does not support this property or method Code: var l2 = obj.parentNode.getElementsByTagName("select")[0].value;
--> OK explanation needed. function args() { return arguments; } don't know the "return arguments; "meaning. hello .. I want know what is the mean of these symbol : || {} thanks .. Quote: Traversal also aids developers in affecting the elements immediately surrounding an element that is being manipulated or otherwise utilized by a script. This can range from adding a class to parent elements to indicate activity to disabling all inactive form elements to any number of other useful tasks. can't understand the above,the paragraph is from a book.what the author want to tell.anyone helps.thank you, I'm troubleshooting some issues with menus closing and when I alert the return value from something like: Code: timer = setTimeout("closeMenu(id)",500);
I get 2,3,4. It seems to increment. Does that just represent how many times the timeout code has been executed? I have 3 Qs about ajax(1,2) and syntax meaning(3): 1- I want to appear a list of urls from a db table to browser, with their newest Google PAGE RANK every time appear in the webpage, and this rank saved auto to database along with previous.... google provides any web service for this? tell me URLs? I found difficulty contact google... 2- Do you know any internet web service (programming) that you input a Russian word, and get (true or 1) if valid, or (false or 0) if not valid word? 3- what mean the in file attached statements to html main file? script.js?x=5 or style.css?p=5 or xmlfile.xml?x=777. hi, I am tring to display some texts in a textbox using \n to create a new line but it does not work. PHP Code: <script> document.getElementById("txtbox1").value=" this is my firstline \n This is my second line \n this is my third line" </script> <input type="text" id="txtbox1"> thanks I am trying to implement a javascript on a page and the error that I get is Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /fullsize/image.php on line 131 On line 131 the code is Code: echo"<img id='thepic' onClick="scaleImg('thepic')" onLoad="scaleImg('thepic')" src='$image'>";
How do I get new line to work in javascript. Everytime I try to use it, it never works. There should be a new line with 5 * instead of having 17 * on one line. Code: <html>
<body>
<script type ="text/javascript">
var x=0;
for (x=0;x<=12;x++)
{
document.writeln("*");
}
document.writeln("\n");
for (x=0;x<=5;x++){
document.writeln("*");
}
</script>
</body>
<html>
sub: Please help me to get all characters from every line from a word-wrapped div using javascript. Detail: Need to get all the characters for first line, second line, third line,... separately from the word-wrapped div Thanks for your reply. I know you can add data to array wiht the push() method but can you add a whole new line as in a = new Array a [1] [1,2,3] so it would create a new line a [2] [4,5,6]; The syntax to the array i think is wrong but you get the question. Hello: First post here on CS ... I am wondering why my code will not write a new line or line break. This is fine: Code: <script>
document.write("Hello and welcome to javascript!");
</script>
But when I try to put a message on two lines, it does not work. The book I'm reading and several websites have stated the below codes will work, but neither do: Code: <script>
document.write("Hello and welcome to javascript! \n");
document.write("It is a tricky language to learn!")
</script>
Code: <script>
document.writeln("Hello and welcome to javascript!");
document.writeln("It is a tricky language to learn!")
</script>
Am I missing something? I have these line of javascript: Code: $(document).ready(function () {
/*$('#first').focus();
$(this).keyup(function (e) {
if (e.keyCode == 13) {
generate();
}
});*/
});
function generate() {
if($("input[name='name']").val().length > 1) {
fi = $("input[name='name']").val().substring(0,1).toUpperCase();
var sl = ["Cool "];
var sl2 = ["Hand "];
var sl3 = ["Luke",];
{
var i = Math.floor(Math.random() * sl.length);
var j = Math.floor(Math.random() * sl2.length);
var k = Math.floor(Math.random() * sl3.length);
var nick = sl[i] + sl2[j] + sl3[k];
}
{
$("#answer").text("Your Name Is: " +nick);
$("#answer").fadeIn("slow");
} ;
}
}
I would like for it to return: Your Name Is: Cool Hand Luke I want the "Cool Hand Luke" to be on a separate line but I don't know how to put a linebreak in the .text string. Is this something somebody could tell me how to do? Where in the line: Code: $("#answer").text("Your Name Is: " +nick);
Do I put (<br>) I have a slideshow that goes through pictures once you click on the Play button and doesn't stop until you press on the Stop button. How can I make it so that it automatically plays once the website loads without having to click on the Play button? Heres the code: Code: <div class="tabs png"><span class="tabs-inner"><a href=""></a> <a href=""></a> <a href=""></a> <a href=""></a> <a href=""></a> <a href=""></a> <a href=""></a></span></div>
<div class="slider-indent-button">
<a href="#" onClick='$("div.tabs").tabs().play();'>Play</a>
<a href="#" onClick='$("div.tabs").tabs().stop();'>Stop</a>
</div>
All help is much appreciated!!! Hi, I'm creating a new email in javascript via outlook. When i try entering a line break "\n", "\r", "\r\r", etc, Outlook just ignores it completely. I've tried using "%0D%0A" and "fromCharCode(10)" as well but it doesnt seem to read it as a line break. Is there any way to code it so that a line break or a carriage return appears on outlook? Hey guys. I'm working on a "Preview Post" function. When the Preview Post button is clicked, it should reload the page, show the preview above the textarea, then send the text back to the textarea so the user can keep working. It works until I move to a second line. If there are line breaks they don't get shown in the preview. Also, the text isn't sent back to the textarea. I have a pair of functions that are supposed to handle the input string. The first function records the input when typing, and the second function picks up the post to print as a preview: You can see what I mean he Code: function preview()
{
var preview = window.document.postform.inputpost.value;
window.document.hidden.inputpreview.value = preview;
}
function copypreview()
{
var copypreview = '<?php echo $_POST[inputpreview]; ?>';
window.document.postform.inputpost.value = copypreview;
}
Here's how I use them: Code:
<body onload='copypreview();'>
<?php include("navbar.php"); ?>
<?php if ($_GET[preview])
{
echo "<table id=blog><tr><td>";
echo $_POST[inputpreview];
echo "</td></tr></table>";
} ?>
<form name="postform" action="submitpost.php" method="post">
Post Title
<input size="40" type="text" name="inputtitle" id="inputtitle">
<?php include("tagbar.php"); ?>
<textarea onchange="preview();" cols="101" rows="20" id="inputpost" name="inputpost"></textarea>
<div align=center>
<input type="submit" value="Submit"/>
</form>
<form name="hidden" method="post" action="addpost.php?preview=1">
<input type="hidden" name="inputpreview">
<input type="submit" onClick="preview();" value="Preview Post"/>
</form>
Sorry I know it's a lot of code. I tried to make it as readable as possible. Can someone tell me how to fix this? I thought I might have to find a way to insert <br> tags when the user hits the Enter key, but I could have sworn this thing was working with line breaks before. Is there any way to have a multiline text string in javascript? For example strname="line one of string line two of string"; I get an error that the string is not terminated. The reason I want to do this is from the following code: Code: <textarea name="comments" id="comments" cols="90" rows="8" ></textarea>
<?php if (isset($_REQUEST["registered"]))
{
$end_of_line=chr(10);
$carriage_return=chr(13);
$step1=str_replace($carriage_return,"",$comments);
$step2=str_replace($end_of_line,"<br>",$step1);
echo "<script type='text/javascript'>\n";
echo "intermediate='",$step2,"';\n";
echo "comment_value=",'intermediate.replace(/<br>/g,"\n")',";\n";
echo "document.getElementById('comments').value=comment_value;</script>\n";
}?>
I an getting the value to set a textarea to from the server. It may have newline characters. If there is a way to have a multiline string, then I could skip all the steps and just echo one javascriopt command. Can this be done? CraigRS Hi, I'm trying to do an assignment, and have copied a piece of code to learn while I do, if you see what I mean. Problem is, I'm having real trouble with one of the lines of code. If someone could tell me basically what it does, I'd be very greatful! Here's the code: if (height[i] == -(array[i].height)) The - before (array[i].height) is really confusing me! Thanks in advance! I have this Javascript and I am wanting to create a line break between the tweet and the time it was posted, here is the javascript, I am guessing I need to insert the <BR> tag somewhere but just not sure where? Thanks function twitterCallback2(twitters) { var statusHTML = []; for (var i=0; i<twitters.length; i++){ var username = twitters[i].user.screen_name; var status = twitters[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(url) { return '<a href="'+url+'">'+url+'</a>'; }).replace(/\B@([_a-z0-9]+)/ig, function(reply) { return reply.charAt(0)+'<a href="http://twitter.com/'+reply.substring(1)+'">'+reply.substring(1)+'</a>'; }); statusHTML.push('<li><span>'+status+'</span> <a style="font-size:85%" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id_str+'">'+relative_time(twitters[i].created_at)+'</a></li>'); } document.getElementById('twitter_update_list').innerHTML = statusHTML.join(''); } function relative_time(time_value) { var values = time_value.split(" "); time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3]; var parsed_date = Date.parse(time_value); var relative_to = (arguments.length > 1) ? arguments[1] : new Date(); var delta = parseInt((relative_to.getTime() - parsed_date) / 1000); delta = delta + (relative_to.getTimezoneOffset() * 60); if (delta < 60) { return 'less than a minute ago'; } else if(delta < 120) { return '<br>about a minute ago'; } else if(delta < (60*60)) { return (parseInt(delta / 60)).toString() + ' minutes ago'; } else if(delta < (120*60)) { return 'about an hour ago'; } else if(delta < (24*60*60)) { return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago'; } else if(delta < (48*60*60)) { return '1 day ago'; } else { return (parseInt(delta / 86400)).toString() + ' days ago'; } } |
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