JavaScript - Determine Length Of String? (extract Number)

Why do I get both the greedy and non-greedy? How do I extract "somestring" only? I'm on IE7.

thanks

Code:

<script type="text/javascript">
var x = "(EVAL)(H:somestring)Some other Text here";
var full =(x.match(/\(H\:(.*?)\)/g)); // produces "(H:somestring)" as expected	
alert(full);
var inside = (x.match(/\(H\:(.*)\)/)); // produces "(H:somestring),somestring" .. I only 

want "somestring"
alert(inside);
</script>

Hi,

I have a string stored in a variable var = "4.25 houses".

I would like to only extract the currency value, ie "4.25" from this. Is this possible? Also I would like to divide and multiply the new variable I get... does this number need to be converted or something?

Thanks in advance!

My array is like so...

shp[0][0] = 5; shp[0][1] = "A5"; shp[0][2] = "A2"; shp[0][3] = "A1"; shp[0][4] = "A4"; shp[0][5] = "A3";
shp[1][0] = 4; shp[1][1] = "C3"; shp[1][2] = "C4"; shp[1][3] = "C1"; shp[1][4] = "C2";
shp[2][0] = 3; shp[2][1] = "E1"; shp[2][2] = "E3"; shp[2][3] = "E2";
shp[3][0] = 3; shp[3][1] = "G3"; shp[3][2] = "G2"; shp[3][3] = "G1";
shp[4][0] = 2; shp[4][1] = "I2"; shp[4][2] = "I1";

the results I am after is...

shp[0][0] = 5; shp[0][1] = "A1"; shp[0][2] = "A2"; shp[0][3] = "A3"; shp[0][4] = "A4"; shp[0][5] = "A5";
shp[1][0] = 4; shp[1][1] = "C1"; shp[1][2] = "C2"; shp[1][3] = "C3"; shp[1][4] = "C4";
shp[2][0] = 3; shp[2][1] = "E1"; shp[2][2] = "E2"; shp[2][3] = "E3";
shp[3][0] = 3; shp[3][1] = "G1"; shp[3][2] = "G2"; shp[3][3] = "G3";
shp[4][0] = 2; shp[4][1] = "I1"; shp[4][2] = "I2";

so it sorts all from the second part of the array to the end in alpha-numerical order.

I tried the following but i get errors about Cannot call method 'unshift' of undefined.

//
var shp;
var shpbk;
var shpbktemp;
//

shpbk = shp.slice();

shpbktemp[0] = shpbk[0][0];
shpbk[0] = shpbk[0].shift; shpbk[0] = shpbk[0].sort; shpbk[0] = shpbk[0].unshift(shpbktemp[0]);

shpbktemp[1] = shpbk[1][0];
shpbk[1] = shpbk[1].shift; shpbk[1] = shpbk[1].sort; shpbk[1] = shpbk[1].unshift(shpbktemp[1]);

shpbktemp[2] = shpbk[2][0];
shpbk[2] = shpbk[2].shift; shpbk[2] = shpbk[2].sort; shpbk[2] = shpbk[2].unshift(shpbktemp[2]);

shpbktemp[3] = shpbk[3][0];
shpbk[3] = shpbk[3].shift; shpbk[3] = shpbk[3].sort; shpbk[3] = shpbk[3].unshift(shpbktemp[3]);

shpbktemp[4] = shpbk[4][0];
shpbk[4] = shpbk[4].shift; shpbk[4] = shpbk[4].sort; shpbk[4] = shpbk[4].unshift(shpbktemp[4]);

I need to check if a var (lessonnum) is a string that cannot be converted to a number, i.e. "fred" "george" "catalyst" etc. but not "5" "456" or "34564" etc.:

Code:

var lessonnum = readCookie('lesson');
if ((intro != "12")||((lessonnum != "A STRING THAT COULD BE A NUMBER"))){
do sth.
}

How could I do that?

A week or so ago Old Pedant and I discussed methods of converting string inputs to numbers. I speculated that *1 might be quicker. I have now run a test:-

Code:

<script type = "text/javascript">

var start = new Date().getTime();
for (var i =0; i <100000; i++) {
var a = "2";
a = a *1;
}
var end = new Date().getTime();
var diff1 = end - start;
alert (diff1); // 109

var start = new Date().getTime();
for (var i =0; i <100000; i++) {
var a = "2";
a = parseInt(a);
}
var end = new Date().getTime();
var diff2 = end - start;
alert (diff2); // 140

var start = new Date().getTime();
for (var i =0; i <100000; i++) {
var a = "2";
a =Number(a);
}
var end = new Date().getTime();
var diff3 = end - start;
alert (diff3); // 140


var start = new Date().getTime();
for (var i =0; i <100000; i++) {
var a = "2";
a = +a;
}
var end = new Date().getTime();
var diff4 = end - start;
alert (diff4); // 109

</script>

The results vary slightly with each run, but the conclusion is that there is no real difference between the methods - except for a = a*1 and a = +a which consistently comes in lower than parseInt() or Number(). But the differences are too small to be significant.

I just noticed that my pseudo-streaming movie code causes an error with IE7.

I works fine with IE8, FireFox, Chrome... I have been looking on my own and found that it's likely a misplaced comma in my code, the other browser are debugging it, but IE7 will not. The error suggests it's where I have indicated below. I've tried removing the comma just after "about_us.jpg" and that causes the script to fail completely. Can anyone help me here, please?


Code:

<script type="text/javascript">
//<![CDATA[

flowplayer("player", {src: "http://www.mysite.org/flowplayer/flowplayer.commercial-3.2.5.swf", wmode: 'opaque'}, {
	// product key from your account
	key: '#$xxxxxxxxx',
		   // configure clip to use "lighthttpd" plugin for providing video data
    playlist: [
	{
        url: 'http://www.mysite.org/media/video/about_us.jpg',

    },   //<----error suggest here??? 
	{
        url: 'http://www.mysite.org/flowplayer/streamer.php?file=about_us.flv',
        provider: 'lighttpd',
		bufferLength: "2",
		autoBuffering: false
    }],

    // streaming plugins are configured normally under the plugins node
    plugins: {
        lighttpd: {
            url: 'http://www.mysite.org/flowplayer/flowplayer.pseudostreaming-3.2.5.swf',

			// use ${start} as a placeholder for the target keyframe
        queryString:escape('&start=${start}')
        }
    }
});
//]]>
</script>

I have an Adobe pdf fill-able form field that requires a distance computation using javascript. One of the values needed in the computation is in the format of a string as feet - inches (for example: 4'-10"). I need to convert this into a number to use to complete a computation. Does anyone have a code snippet or any ideas on how to do this. Any assistance is greatly appreciated.

Thanks.

Hi,

I have a click event that changes an element from a span that acts like a text link, to a textbox that the user types in:

Code:

Event.add(area_el_rename, 'click', function(e) 
			{
				if(!currently_renaming)
				{
					area_el.innerHTML = '<textarea name=\"renaming_area\" id=\"renaming_area\" style=\"width:100px;height:10px;background-color:#DCDCDC; resize:none;font-size:8px;\"></textarea><br>';
					currently_renaming=true;
				}
			});

I am wondering if there is any way to determine if the user has clicked outside the textbox, and if so, perform an action (in my case revert back to the <span>. The solution probably doesn't need to be tied to anything. It probably just has to be something like:

if(click_outside_id("renaming_area"))
{
//do my desired action
}

Hello!
I do my calendar (vertical) =) and I've done to date were down
But how to do that day of the week displayed on the side of the date of

Here is code:

Code:

<html><head><title>Calendar</title>
<meta http-equiv="content-type" content="text/html; charset=windows-1251" />

</head>
<body><center>

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
monthnames = new Array("January","Febrary","March","April","May","June","July","August","September","October","November","December");
var linkcount=0;                                                              
	function addlink(month, day, href) {
	 var entry = new Array(3);
	 entry[0] = month;
	 entry[1] = day;
	 entry[2] = href;
	 this[linkcount++] = entry;
					   }
Array.prototype.addlink = addlink;
linkdays = new Array();
monthdays = new Array(12);
monthdays[0]=31;
monthdays[1]=28;
monthdays[2]=31;
monthdays[3]=30;
monthdays[4]=31;
monthdays[5]=30;
monthdays[6]=31;
monthdays[7]=31;
monthdays[8]=30;
monthdays[9]=31;
monthdays[10]=30;
monthdays[11]=31;

todayDate=new Date();
thisday=todayDate.getDay();
thismonth=todayDate.getMonth();
thisdate=todayDate.getDate();
thisyear=todayDate.getYear();

thisyear = thisyear % 100;
thisyear = ((thisyear < 50) ? (2000 + thisyear) : (1900 + thisyear));
if (((thisyear % 4 == 0) 
&& !(thisyear % 100 == 0))
||(thisyear % 400 == 0)) monthdays[1]++;
startspaces=thisdate;
while (startspaces > 7) startspaces-=7;
startspaces = thisday - startspaces + 1;
if (startspaces < 0) startspaces+=7;

document.write 
for (s=0;s<startspaces;s++) { 
document.write();
}

count=1;
while (count <= monthdays[thismonth]) {
for (b = startspaces;b<7;b++) {
linktrue=false;


/////displays the date
document.write("<br width='30'>");

if (count <= 31) {
document.write(monthnames[thismonth]);
document.write(" ");
}

for (c=0;c<linkdays.length;c++) {
if (linkdays[c] != null) {
if ((linkdays[c][0]==thismonth + 1) && (linkdays[c][1]==count)) {

document.write("<a href=\"" + linkdays[c][2] + "\">");
linktrue=true;
      }
   }
}

if (count==thisdate) {
document.write("<font color='FF0000'><strong>");
}
if (count <= monthdays[thismonth]) {
document.write(count);
}
else {
document.write(" ");
}
if (count==thisdate) {
document.write("</strong></font>");
}
if (linktrue)
document.write("</a>");
document.write;
count++;
}
document.write;

document.write("<tr>");
startspaces=0;
}
document.write("</p>");
// End -->
</SCRIPT>

</center></body> 
</html>

THIS IS NOT HOMEWORK


Hi all,

See this image:



The image represents an "entire" web page and the bright part the area currently scrolled into by the web browser.

I can get the client's screen SIZE, but I don't know how to figure how many pixels down into a page the browser happens to be.

To clarify, the distance shown as a question mark would be "zero" if the browser were scrolled all the way to the top of the page and some positive number as the browser scrolls down.

Is there any way for me to get this number (in Javascript).

What I need it for is to position a pop-up window centered left-to-right and 1/3-2/3 top to bottom on the screen REGARDLESS of where in the page the browser is scrolled.

Thanks.....

-- Roger

HI all. How do I determine whether a variable exists in a form. I have a form called "theForm". I want to determine whether the variable "THIRD_PARTY" exists in the form and if it has been set.
Tracy

Referring to following link, I would like to determine the link for "In-Depth.xls", based on following coding, I find related information for Excel.png, does anyone have any suggestions on how to determine the URL for Excel file?

Thanks in advance for any suggestions

http://fx.aastocks.com/en/forex/mark...0&indicator=47

<img src="../../images/common/Excel.png" id="cp_imgExcel" class="btn" onclick="window.location.href='dbindepth.aspx?country=66970&amp;startdate=2010/12/24&amp;enddate=2011/12/24&amp;indicator=47&amp;excel=1'"/>

I have a function below where every time a question is submitted, it will add a new row in the table with a textbox which allows numbers entry only. My question is that I don't know how to code these features in this function:

1: I want the text box to be between 0 and 100, so if text box contains a number which is above 100, it will automatically change the number to the maximum number which is 100.

Does any one know how to code this in my function below in javascript:

Code:

function insertQuestion(form) 
    {   
    
         var row = document.createElement("tr");
         var cell, input;
    
    cell = document.createElement("td");
         cell.className = "weight";
         input = document.createElement("input");
         input.name = "weight_" + qnum;
         input.onkeypress = "return isNumberKey(event)";
         cell.appendChild(input);
         row.appendChild(cell);
    }

When it occurred to me that I needed to calculate this, I knew it was over my head. (although I did come up with what I thought to be a pretty clever solution involving a very complex series of arrays...) So I decided to google it. The trouble is, the solution was a little over my head too...
Sooo I hacked away at it for about an hour, and finally it worked, but on closer inspection I had made a typo from the original algorithm. So I thought I would pose the question to you all...

Is the original algorithm correct, or flawed? is my interpretation correct/flawed, or the same? I'm not really sure what I did here, but after many tests, I think I got the correct solution.

original post on http://stackoverflow.com/questions/3...ranges-overlap
Quote:
Let CondA Mean DateRange A Completely After DateRange B (True if StartA > EndB)

Let CondB Mean DateRange A Completely Before DateRange B (True if EndA < StartB)

Then Overlap exists if Neither A Nor B is true ( If one range is neither completely after the other, nor completely before the other, then they must overlap)

Now deMorgan's law, I think it is, says that

Not (A Or B) <=> Not A And Not B

Which means (StartA <= EndB) And (EndA >= StartB)

NOTE: This includes conditions where the edges overlap exactly. If you wish to exclude that, change the >= operators to >, and <= to <
And finally the test scenario that I finally got to work:
Code:

<input onclick="this.value=''" onkeyup="TEST()" id=inhour1 value=1>
<input onclick="this.value=''" onkeyup="TEST()" id=inminute1 value=1>
<br />
<input onclick="this.value=''" onkeyup="TEST()" id=outhour1 value=2>
<input onclick="this.value=''" onkeyup="TEST()" id=outminute1 value=1>
<br />
<br />
<input onclick="this.value=''" onkeyup="TEST()" id=inhour2 value=3>
<input onclick="this.value=''" onkeyup="TEST()" id=inminute2 value=1>
<br />
<input onclick="this.value=''" onkeyup="TEST()" id=outhour2 value=4>
<input onclick="this.value=''" onkeyup="TEST()" id=outminute2 value=1>

<script>
function ID(e){return document.getElementById(e)}

function TEST(){
intime1=(parseInt(ID('inhour1').value,10)*60*60)+(parseInt(ID('inminute1').value,10)*60)
intime2=(parseInt(ID('inhour2').value,10)*60*60)+(parseInt(ID('inminute2').value,10)*60)

outtime1=(parseInt(ID('outhour1').value,10)*60*60)+(parseInt(ID('outminute1').value,10)*60)
outtime2=(parseInt(ID('outhour2').value,10)*60*60)+(parseInt(ID('outminute2').value,10)*60)

comp= (intime1 <= outtime2)&&(outtime1 <= intime2) 

ID('compare').innerHTML=''
ID('compare').innerHTML+=intime1+'<br />'
ID('compare').innerHTML+=outtime1+'<br />'
ID('compare').innerHTML+=intime2+'<br />'
ID('compare').innerHTML+=outtime2+'<br />'
ID('compare').innerHTML+=comp+'<br />'

}
</script>
<button onclick="TEST()">compare</button>
<div id="compare"></div>

Any feedback would help a lot! I fear using an algorithm that I don't fully understand in production code...

Hi everyone,

Is it possible to determine at the startup of the page if the visitor is using a computer or a phone to access the site?

I would like to make the intro process much better than a simple "click here for HTML version or click here for Flash version". I would like for it to simply redirect to the page I set it to go to depending on whether or not they're using a regular browser or a mobile browser.

How would I go about this?

Thank you all very much in advance.