|
JavaScript - Prevent Selection
Hello,
Is there anyway to prevent images, words, divisions, etc from being selected? Also if something is selected is there a way to deselect? Thanks! Similar TutorialsHi, Here's a sample form: Code: <form action="#" method="post"> Name:<br /> <input type="text" name="name" value="your name" /><br /> E-mail:<br /> <input type="text" name="mail" value="your email" /><br /> <input type="submit" value="Send"> </form> When you tab to a text input, the value gets highlighted. How can it be disabled? Any help is appreciated! Mike Hello. I'm using the keyup event for an input box to check for the Escape key (keyCode 27). I'm then using this to hide a related select element. It works okay apart from IE(8) of course . How can I prevent IE carrying on with its normal Escape behaviour? If tried a number of things, most recently: Code: e.cancelBubble = true; if ( e.stopPropagation ) e.stopPropagation(); return false; but it, IE, is insistant. I tried switching to 'keydown' but it went a bit wonky.. Andy. I retrieve a list of links from a database using ajax, then I assign them to the innerHTML property of a div whose display property is set to "none" Then I set the display property to "display" to get a drop-down listbox. The problem is the links in the list are all hilighted like they've been dragged over by a mouse. How do I prevent these links from highlighting? I have a tracking ad at the bottom of my site. (no iframes). how do I know and/or prevent that tracking ad from popping up a popup? They are not suppose to, but I suspect they do. Is there a way to track this, or perhaps prevent them from popping the popup from within my page? I have access to various libraries, prototype/jquery etc.. so if there is a func/method in those, I could use too. Code: 1 ,<input id="14sq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 2 ,<input id="510sq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 3 ,<input id="1119sq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 4, <input id="20jsq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 5 ,<input id="oneyear-und-0-value" maxlength="10" class="form-text" type="text"> 6 ,<input id="twoyear-und-0-value" maxlength="10" class="form-text" type="text"> 7 ,<input id="threeyear-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 8 <input id="vpssq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 9 <input id="500zh-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 10 <input id="1000zh-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 11 <input id="1500zh-und-0-value" size="12" maxlength="10" class="form-text" type="text"> now, i want to do, if the editor type content to 1, 2, 3 4 input box and finished namely the 1 ,2,3 4have value , then he can't type anything to the rest. if the 5,6,7, input box has value. then can't type anything to the rest. if the 8, input box has value. then can't type anything to the rest. if the9,10,11, input box has value. then can't type anything to the rest. How do I prevent my Link from disappearing?? When I click on the link, "Click Here" It display, "Look At Me!!" but the link, "Click Here" is GONE Is there a way to keep my link, "Click Here" from disappearing? So when I click on the link, "Click Here" the content, "Look At Me!!"should display as well. thanks Here are my codes Code: <html>
<head>
<script type="text/javascript">
function display() {
document.writeln("Look At Me!!");
}
</script>
</head>
<body>
<a href="google.com" onClick="display()">Click Here</a>
</body>
</html>
Hey! I searched a while on the web for this but i didn't find a solution that really worked. So is there a way how i can prevent IE9 from scrolling when i use the arrow keys? I've run into a glitch in my little calculator form. Apparently, in Safari, when you hit the enter key while the cursor is in an input field, it will attempt to submit the form. I don't want this to happen. Submitting serves no purpose in this, because all of the functionality is in the script on the page. I copied most of the HTML from an example, and noted that the form tag didn't contain an action= parameter. I tried adding this with the hopes that it would override Safari's default submit action. They do affect its behavior, but not in a way that does any good. First, I tried: action="" which didn't work Then, I tried: action="CalcRange()" This is a harmless function that normally runs on field change. It didn't work either. In every case Safari is determined to fire off a URL. No problems with MSIE or Firefox. Is there another way of using the action parameter to fix the problem, or do I have to attack this another way. Thanks. Code: <html><head><title></title>
<script language="JavaScript">
var d = null;
function PadCalc(ctrm,cvlo,cvhi,cstray,rc) {
chp = cvhi+ctrm;
clp = cvlo+ctrm;
beta=(rc-1)*cstray;
a=rc* clp- chp +beta;
b= (rc-1)*clp*chp+beta*(clp + chp);
c=beta*clp* chp;
cser=(-b-Math.sqrt(b*b-4*a*c))/(a+a);
return(cser);
}
function TrmCalc(cser,cvlo,cvhi,cstray,rc) {
if (cser<0.00001) {
ctrm=(cvhi+cstray-rc*(cvlo+cstray))/(rc-1);
}
else {
cser2=cser*cser;
k0=(1-rc)*cstray;
k1=k0*cser2;
k2=k0*cser+cser2;
k3=k0*cser-rc*cser2;
k4=k0+(1-rc)*cser;
a=k4;
b=k2+k3+k4*(cvlo+cvhi);
c=k1+k2*cvhi+k3*cvlo+k4*cvlo*cvhi;
ctrm=(-b-Math.sqrt(b*b-4*a*c))/(a+a);
}
return(ctrm);
}
function setCellTxt(id,tx,clr){
cell=document.getElementById(id);
cell.innerHTML=tx;
cell.style.color=clr;
}
function CalcAll() {
setCellTxt("ex_cpar","***","#FF0000");
setCellTxt("ex_cser","***","#FF0000");
setCellTxt("ex_L","***","#FF0000");
flo = parseFloat(d.ef_flo.value);
fhi = parseFloat(d.ef_fhi.value);
cvlo = parseFloat(d.ef_cvlo.value);
cvhi = parseFloat(d.ef_cvhi.value);
cstray = parseFloat("0".concat(d.ef_cstray.value));
KVal = parseFloat(d.ef_KVal.value);
spi = 500000.0/Math.PI;
rf=fhi/flo;
rc=rf*rf;
switch(d.mknown.selectedIndex){
case 0:
// For Given inductor
L = KVal;
w=(spi/flo)
chppp = w*w/L;
w=(spi/fhi)
clppp = w*w/L;
alpha = cstray-chppp;
beta = cstray-clppp;
k1 = cvhi-chppp-cvlo+clppp;
k2 = alpha - beta;
k3 = alpha*cvhi - beta*cvlo;
k4 = alpha*cvhi;
k5 = cvhi + alpha;
a = -k2/k1;
b = alpha-(k3+k2*k5)/k1;
c = k4-(k3*k5)/k1;
ctrm = (-b+Math.sqrt(b*b-4*a*c))/(a+a);
cser = -(k2*ctrm+k3)/k1;
if (cser>100*cvhi) cser=0;
// End of given L calc
break;
case 1:
// For Given Padder
cser=KVal;
if (cser<.00001) {
cpinv=0;
}
else {
cpinv=1/cser;
}
ctrm=TrmCalc(cser,cvlo,cvhi,cstray,rc);
chp=cvhi+ctrm;
chppp=1/(1/chp+cpinv)+cstray;
w=spi/flo;
L=w*w/chppp;
break;
case 2:
// For Given Trimmer
ctrm=KVal;
cser=PadCalc(ctrm,cvlo,cvhi,cstray,rc);
chppp=chp*cser/(chp+cser)+cstray;
if (cser>100*cvhi) cser=0;
w=spi/flo;
L=w*w/chppp
break;
}
badVal=false;
if (isNaN(ctrm) || ctrm<0) badVal=True;
if (isNaN(cser) || cser <0) badVal=True;
if (isNaN(L) || L<0) badVal=True;
if (!badVal) {
setCellTxt("ex_cpar",ctrm.toFixed(2),"#000080");
setCellTxt("ex_cser",cser.toFixed(2),"#000080");
setCellTxt("ex_L",L.toFixed(2),"#000080");
}
}
function CalcRange() {
flo = parseFloat(d.ef_flo.value);
fhi = parseFloat(d.ef_fhi.value);
cvlo = parseFloat(d.ef_cvlo.value);
cvhi = parseFloat(d.ef_cvhi.value);
cstray = parseFloat("0".concat(d.ef_cstray.value));
if (flo>0 && fhi>0 && cvlo>0 && cvhi>0) {
spi = 500000.0/Math.PI;
rf=fhi/flo;
rc=rf*rf;
csmin=PadCalc(0,cvlo,cvhi,cstray,rc);
ctmax=TrmCalc(0,cvlo,cvhi,cstray,rc);
w=spi/flo
chppp=cvhi*csmin/(cvhi+csmin)+cstray;
Lmax=w*w/chppp;
chppp=cvhi+ctrm+cstray;
Lmin=w*w/chppp;
//Reset exact calc outputs after input parameter change
/*
setCellTxt("ex_cpar","","#000080");
setCellTxt("ex_cser","","#000080");
setCellTxt("ex_L","","#000080");
*/
if (Lmin<0 || Lmax<0 || ctmax<0 || csmin<0) {
setCellTxt("rTrm","***","#FF0000");
setCellTxt("rPad","***","#FF0000");
setCellTxt("rInd","***","#FF0000");
}
else {
setCellTxt("rTrm","0 ... ".concat(ctmax.toFixed(2)),"#000080");
setCellTxt("rPad",">= ".concat(csmin.toFixed(2)," (if present)"),"#000080");
setCellTxt("rInd","".concat(Lmin.toFixed(2)," ... ",Lmax.toFixed(2)),"#000080");
}
}
}
function kvChange() {
descriptions = Array ("Enter Inductance Value (µH):","Enter Series Capacitance Value (pF):","Enter Parallel Capacitance Value: (pF)");
setCellTxt("KVdescription",descriptions[d.mknown.selectedIndex],"#000080");
setCellTxt("ex_cpar","","#000080");
setCellTxt("ex_cser","","#000080");
setCellTxt("ex_L","","#000080");
}
</script>
</head>
<body onload="d = document.forms[0];">
<center>
<h2>Bandspread Calculator</h2>
</center>
<form >
<table style="width: 692px; height: 400px;" align="center"
border="0">
<tbody>
<tr>
<td align="center" colspan=2"><B>Input Parameters:</B></td>
</tr>
<tr>
<td align="right">Lowest Frequency (kHz):</td>
<td><input name="ef_flo" onchange="CalcRange()" size="18"> </td>
</tr>
<tr>
<td align="right">Highest Frequency (kHz):</td>
<td><input name="ef_fhi" onchange="CalcRange()" size="18"> </td>
</tr>
<tr>
<td align="right">Tuning Capacitor <I>C<sub>V</sub></I> Minimum Capacitance (pF):</td>
<td><input name="ef_cvlo" onchange="CalcRange()" size="18"> </td>
</tr>
<tr>
<td align="right">Tuning Capacitor <I>C<sub>V</sub></I> Maximum Capacitance (pF):</td>
<td><input name="ef_cvhi" onchange="CalcRange()" size="18"> </td>
</tr>
<tr>
<td align="right">Stray Capacitance <I>C<sub>S</sub></I> (pF):</td>
<td><input name="ef_cstray" onchange="CalcRange()" size="18"> </td>
</tr>
<tr>
<td align="center" colspan=2"><HR></td>
</tr>
<tr>
<td align="center" colspan=2"><B>Allowable Component Ranges:</B></td>
</tr>
<tr>
<td align="right">Trimmer Capacitor <I>C<sub>T</sub></I> (pF): </td>
<td align="left" id="rTrm"><font color="#FF0000">***</font></td>
</tr>
<tr>
<td align="right">Padder Capacitor <I>C<sub>P</sub></I> (pF): </td>
<td align="left" id="rPad" ><font color="#FF0000">***</font></td>
</tr>
<tr>
<td align="right">Inductor (µH): </td>
<td align="left" id="rInd"><font color="#FF0000">***</font></td>
</tr>
<tr>
<td align="center" colspan=2"><HR></td>
</tr>
<tr>
<td align="center" colspan=2"><B>Exact Value Calculation:</B></td>
</tr>
<tr>
<td align="right">Choose the Known Component:</td>
<td>
<select name="mknown" onchange="kvChange()" size="1">
<option selected="selected">Inductor</option>
<option>Padder Capacitor (Series)</option>
<option>Trimmer Capacitor (Parallel)</option>
</select>
</td>
</tr>
<tr>
<td id="KVdescription" align="right">Enter the Known Component Value:</td>
<td><input name="ef_KVal" size="18"></td>
</tr>
<tr>
<td align="right">Click to Calculate the Unknown Components:</td>
<td><input type="button" value="Calculate" onclick="CalcAll()"> </td>
</tr>
<tr>
<td align="right">Trimmer Capacitor <I>C<sub>T</sub></I> (pF): </td>
<td id="ex_cpar" > </td>
</tr>
<tr>
<td align="right">Padder Capacitor <I>C<sub>P</sub></I> (pF): </td>
<td id="ex_cser"> </td>
</tr>
<tr>
<td align="right">Inductor (µH): </td>
<td id="ex_L"> </td>
</tr>
</tbody>
</table>
</form>
</body></html>
Edit: I should also add that my web page is made using Apple's iWeb software, and it stores the above code in a separate file, and then uses the following iframe code to load it: Code: <iframe id="widget1-frame" src=".//BandspreadCalc_files/widget1_markup.html" frameborder="0" style="width: 100%; height: 100%;" scrolling="no" marginheight="0" marginwidth="0" allowTransparency="true"></iframe> So, when Safari submits the form, the result is that it loads a page containing only the widget1_markup.html code, and not the parent page. Either way, it's annoying, because any data that the user has entered in a field will be erased. Hello. I have what I think is a simple request, but I'm not quite sure how to go about it. I hope you can help me! Problem: I am building an online store and need to restrict checkout unless a customer has bought at least $20 worth of items. If they have >$20, they can check out. If they have <$20, they should get an error when they click the checkout button that explains that there is a $20 minimum. I don't want them to be able to checkout, so maybe I also need to disable the button or hide it? Here are the two elements in my HTML: The total price div: Code: <div id="totalprice">{tag_productgrandtotal}</div>
The checkout button: Code: {tag_buybutton,<img alt="" src="/CatalystImages/shop_checkout.png" />}
Here is what I've tried to put together with my bare minimum knowledge of Javascript: Code: <body onload="checkOut()">
<script type="text/javascript">
function checkOut() {
var tp = document.getElementById('totalprice').innerHTML;
tp = tp.replace(/[^0-9$\.]/g,""); // strip anything except numbers decimals and $ sign
if (tp < "$20.00") {
????????????????
}
else {
?????????????????
}
}
</script>
I'm not sure the top part is correct, and where I've put "?????" I have no idea what to do to deactivate the checkout button and produce the error message. Thank you SO much for any help you can provide. I have a set of text boxes sharing the same name that I want to validate onSubmit. If a duplicate is found, I want to alert the user and prevent the form from submitting. How would I check the text boxes for duplicates? Code: <script type="text/javascript">
function Validate() {
var obj = document.getElementsByName('keyword');
var i = 0;
var rows = obj.length;
for (i=0; i<rows; i++) {
if (obj[i].value == any of the other text boxes {
alert('A duplicate was found.');
return false;
}
}
</script>
<form method="post" action="" onSubmit="return Validate();">
<input id="k1" name="keyword" /><br />
<input id="k2" name="keyword" /><br />
<input id="k3" name="keyword" /><br />
<input id="k4" name="keyword" /><br />
<input id="k5" name="keyword" /><br />
<input type="Submit" value="Submit" />
</form>
Please, I need a code that is capable of preventing SEOQuake from loading on my websites, even if a user has installed the plug-in. For example, Google, Yahoo and Bing implements such feature. I just don't want it to load whenever anybody visits my sites. I was curious if there is a method to keep a single input from submitting a form. I have an input into which I'm building a drop down search feature, however, I'd like it so when the user presses return there, instead of submitting the form, it runs an AJAX POST instead. I am currently using keyUp to recognize the button press, but its still submitting the form its attached to. Obviously, I'd like that not to happen. Hello, Is there any way I can prevent IE from displaying the "active X controls and script prevention message" when I load my web page into the browser. Firefox, Safari and Chrome, allow my scripts to run without displaying the message when the page is loaded into the respective browsers. Any tips would be really useful. Many thanks Nonye I wish for my users to retype their email address instead of the copy and paste method to ensure they have typed it correctly both times. How could this be done, would it be Javascript ? I am using an e-commerce solution to run my web business. The checkout portion of the website is COMPLETELY closed off to me and I can't access the files. What I need: A javascript example / solution that will prevent someone from submitting a form without first filling in a field. What I currently have is a series of radio buttons built into the checkout process. It displays 20 options and the customer has to choose which one of the twenty options applies to them. Each customer only has 2 valid options to choose from based on their zip code, but currently the other zip code shipping options are listed as well. I have built a javascript that works great hiding all of the shipping options, taking data from the customer, and then only showing the correct shipping option. The problem is, if the customer doesn't fill this out, then they can just hit submit and pay the default shipping option without ever seeing that they didn't choose the correct zip code. What can I do to prevent them from submitting the form? The submit form is a button and there are 6 other buttons and none of them have any identifying factors. Hi all, I am facing problem in preventing my web page being loaded into an iFrame. I search in internet and found this solution : if (self == top) document.documentElement.style.display = 'block'; else top.location = self.location; The above java script code is simple redirecting me to the home page of my web site. But I donot want that kind of solution. When anybody tried to access my web page through iFrame, it should show an error message like "The content of the web site cannot be loaded into an IFrame". This message should be displayed inside the iFrame. For example, if we tried to access "google.com" site in an iframe, the website should not allow the iframe object to load into it, insted it will display an error message along with a provision to open webiste with an external link with it. Any help? thanks, -Sanath Hello all, Please I need help, I have a php form with different fileds. I have a field called description. The description field should only contains pure text, no numbers, but my users are entering phone numbers and email addresses into this field despite to the fact that there is already dedicated fileds for email and phone. What I want is a javascript funtion or php function that will automatically delete the numbers or @ from the field or prevent entering numbers and @ signs on this particular field. Many thanks in advance for your help. I was advised by a community member this post would be better suited for the JavaScript section (hope someone can help): The exit pop-up script I have is working fine, other than the fact that it engages on any internal links as well. Below I have the original script I was using along with a modified script sent back to me from someone in another forum. They also advised me to add rel="external" to all of my external links. I'm not sure if a different condition would apply whether the link stayed within my site or went elsewhere. In any event, it's still not working. The changes get me to my desired page on internal links, but the pop-up still engages and I have to click "OK" before it takes me there. I'm obviously looking to get this to work so that all internal links go straight to the page they're defined to, without the pop-up engaging at all. Both script versions are below: My original: Code: <script type="text/javascript">
var internal = 0;
function bunload() {
if (internal != 1) {
window.onbeforeunload = null;
alert("******************************************************\n WAIT! WAIT! WAIT! WAIT! WAIT! WAIT!! WAIT!!\n******************************************************\n\nMy partner will probably KICK MY *** for this...\n\nI am secretly giving away a LIMITED number of $20\ncoupons just for Tweeting about us.\n\nIf you act right now, you can grab our Manuscript\nplus ALL Bonuses for just $27!\n\nJust click *CANCEL* on the next window to get your\nV.I.P. discount link!\n\n******************************************************");
window.location = "gift page";
return "******************************************************\n Click CANCEL - Click CANCEL - Click CANCEL \n******************************************************\n\n Click *CANCEL* Now to get your V.I.P. discount!\n\n"; }
else {
internal = 0;
}
}
if (internal != 1) {
window.onbeforeunload = bunload;
}
else {
internal = 0;
}
</script>
And the modified script another community member replied back to use: Code: <script type="text/javascript">
var internal = 0;
function bunload() {
if (internal != 1) {
window.onbeforeunload = null;
alert("******************************************************\n WAIT! WAIT! WAIT! WAIT! WAIT! WAIT!! WAIT!!\n******************************************************\n\nMy partner will probably KICK MY *** for this...\n\nI am secretly giving away a LIMITED number of $20\ncoupons just for Tweeting about us.\n\nIf you act right now, you can grab our Manuscript\nplus ALL Bonuses for just $27!\n\nJust click *CANCEL* on the next window to get your\nV.I.P. discount link!\n\n******************************************************");
window.location = "gift page";
return "******************************************************\n Click CANCEL - Click CANCEL - Click CANCEL \n******************************************************\n\n Click *CANCEL* Now to get your V.I.P. discount!\n\n"; }
else {
internal = 0;
}
}
if (internal != 1) {
window.onbeforeunload = bunload;
}
else {
internal = 0;
}
window.onload = function()
{
var links = document.getElementsByTagName('a');
for(i = 0 ; i < links.length; i++)
{
if(links[i].getAttribute('rel') == 'external')
{
links[i].onclick = function()
{
bunload();
}
}
}
}
</script>
Any suggestions on what I'm doing wrong here? My apologies, but my coding isn't very strong and I'm just picking this stuff up as I go. Thanks Hi all, I have created the following page http://www.kylehouston.com/testing/cci/ When loading in ie6 and ie7 the content slider exposes all the slides until fully loaded, is it possible to hide these slides while loading? Thanks in advance Kyle |
|||||||