JavaScript - How To Check A Var Is A String Not A Number?

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 a string of text, and starting from a particular spot (known to be a number), I want to find the length of that number.

Here's what I have: Code:

...

var start = [...predetermined...]
var end = 0;
while (!isNaN(sourceCode.charAt(start + end))){
   endCurrent++;
}
var myNum = sourceCode.substr(start, end) * 1;

So let's say var sourceCode = "alkdjabjasdsdf-53 dnalsdb..."; , startCurrent will already be at the "5" and I want to be able to extract the "53". What I have works, but it seems cumbersome...

Any advice?

how to change placeholder text colour in javascript?

Code:

<script>
// this is inside a html form
form['height'].placeholder+="enter password";
</script>

how do I change the text above from grey to a different colour?

Also, how do I check for isnotanumber in a form submission?

Code:

if(isNaN(form['weight'].value)) {
			console.log('use a number');

it still outputs that console.log error!!!!!!!!!

string check in javascript


do suggest me something .......

if you have any two words like , "me" and "you".

Here is the code i am trying.

Code:

var str="اسدف";
patt=/[\u0600-\u06FF\u0750-\u077F]/;
result=patt.test(str);
document.write("<br />Returned value: " + result);
</script>

This should return true, as the string in the str variable is indeed Arabic character. But it returns false. Need some help here on this..

Thanks in Advance

Basically I have this:

function semaphore(phrase)
{
var len = phrase.length;
var str1 = "";
for (var i=0;i<len;i++)
{
if(phrase[i]=" ")
{
phrase[i] = "interval";
}
var str = "images/semaphore/" + phrase[i] + ".gif";
str1 = str1 + "<img src='" + str + "'>";
}
return str1;
}

so if phrase = i love coding forums

I want all the spaces to be replaced with the text "interval"

Thanks
Danny

I have thought about using the standard email checker pattern but we have had problems in the past so looking to check if the string follows these simple rules.

has no spaces, has a character/s at the start followed by an @ then has a character/s followed by a (dot) then another character/s
i.e
a@a.a
aa@aa.aa
aaa@aaaaaaaaa.aaa

i am not sure how the standard pattern works but feel that it may be to complex which causes some email address to fail.

Function findsometing()
(


var myString = 'results' + '<BR>'

for (var initiator, test condition,incrementor.)
{
if (.....)
{
myString ='some quote';
}
else if (.....)
{
myString += something + '<br>'
}
else if (....... )
{
myString += something + '<br>'
}
else
{
myString += '';
}
}

displayMessage(myString)
)


I am a complete newbie to javascript and programming, so excuse any faux pas, but I want to check the myString variable after all the loops in the for loop statement have been completed. For example if nothing was added to the var myString after the completeion of the for loop, i want to display a message that no results found. i tried various attempts of an if statement along lines of

}
}

if (myString = 'results') ....i also tried if myString= ('results' + '<BR>')
{
displayMessage('no results found')
}
else
{
displayMessage(myString)
}
)

Any pointers as to where i am going wrong?

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);
    }

I am trying to figure out how to make a random number I can plug into a script count down from that number at certain times of the day until it reaches 0. I would like it to reset itself at midnight every day. I'm trying to make it work with a script I found on here that resets itself at midnight every day. So instead of it counting down too fast, it would count down to the next number after a randomly generated number of minutes until it reaches 0. But it wouldn't necessarily have to end at 0 at midnight. It could go from 845 to 323 at the end of the day at a slower pace. Is that possible?

On this webpage
http://www.corkdiscos.com/testimonials.html

i have a like button.
when a user clicks like a comment box appears.
when i unlike the button the comment box disappears

this is ok but when a user has already liked the facebook page and comes to my webpage
the comment box does not show.

so im looking for a piece of javascript to check if a user has like the button on my page and if so to show the comment box.

please check my source code of the website http://www.corkdiscos.com/testimonials.html to see what i have so far.

any help would be greatly appreciated

Hi guys.

I'm working a bunch of pre existing code on a CMS. Just after a quick fix. Doing a show/hide thing on a particular div somewhere on the page depending if a checkbox is ticked or not.

Currently there is 3 checkboxes that are dynamically added through the CMS.

Here's simplified version of the form:

Code:

<form id="simplesearch" name="simplesearch">
<input type="checkbox"   onclick='showhidefield(this.value)' name="meta_data_array_search_criteria[custom_profile_type][]" value="5"  class="input-checkboxes" />
<input type="checkbox"   onclick='showhidefield(this.value)' name="meta_data_array_search_criteria[custom_profile_type][]" value="4"  class="input-checkboxes" />
</form>

And here's the javascript I was playing with.
Code:

function showhidefield(id)
{
   if(document.simplesearch.meta_data_array_search_criteria[custom_profile_type][''].checked) {
      document.getElementById("profile_fields_wrapper_" + id).style.visibility = "visible";
   }
   else
   {
      document.getElementById("profile_fields_wrapper_" + id).style.visibility = "hidden";
   }
}

Problem I'm having is how do i do a check to see if those checkboxes are checked in the javascript with those name arrays? How do i separate them? 'm guessing I have to loop through them or something?Hopefully that make senses - it's late here and I'm losing the plot Any pointers would be gratefully welcomed

I am delving into the coding world and while I understand the basic principle of cookies, conditional statements, arrays, etc... I am still learning how to properly implement them. Any asistance with the following situation would be greatly appreciated and help with my learning as I try to reverse engineer the logic. I have looked around the web and this forum with little success. If the situation below is too complicated, I would really appreciate even a shove in the right direction regarding the logic.

-----------------
How could I show a preset counter which counts up from a preset, beginning number toward a preset, end number? I imagine the increment and speed is set be the difference between the two numbers and a timeframe.

Assumptions:
I would rather not set the increment but edit the end number to show a steady increase. As I update that number, the increment adapts dynamically.

I would want the number/script to be useful, so it should not refresh to the beginning number on each page load (i.e. num=0). When a visitor comes to the page, it must seem like the counter has been steadily been increasing in their absence.

Coke or Pesi did something similar one time regarding cans sold to date (doubt it was plugged into a DB somewhere but rather based on a steady sales figure) and it was pretty cool.

All the best!

Hi All,

Im a total novice with coding other than html/css.

I have a video xml which, in which i need a new feature, could you help me with that?

Basically my video is being entered with a time of it - for example 30sec.

I have start and end trackers firing for the video but now i want to add impression trackers at 25%, 50%, 75%. I managed to do it using specifying seconds for the calls, but it becomes a pain to recalculate seconds for every video.

Any ideas I could follow?

Thanks,
AD

Ooook so this is probably the stupidest question ever. I know in java you can take advantage of a number being an int (not double) and divide by something without getting a remainder. But in javascript you dont declare what kind of variable something is.

So my problem is: Given any double or triple digit number, how do i get all but the last digit. Like if i have 13, I need to make an int with 1. If it's 103 i need one with 10.

Thanks!!