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JavaScript - Javascript Passing Function As Argument
Hello,
I am trying to execute a javascript function passed as argument. I am not sure of the exact way to do it. <html> <head> <script type="text/javascript"> var checkLink = function(linkId, enabledFunction){ var linkidObj = document.getElementById(linkId); if(linkidObj.className=="activelinktext" ) { enabledFunction(); return false; } else if(linkidObj.className=="inactivelinktext") { return false; } alert("*inside CheckLink*"+enabledFunction); }; </script> </head> <body> <a class="inactivelinktext" onclick="checklink(this,"javascript:goback();")"> </body> </html> Thanks, -Vijay Similar TutorialsHi, I am facing a problem in passing replace() function as an argument in user defined java function, can any one help me how to resolve it? intention is to pass a file path to my user defined function, but before passing the path i want to replace the character '\' to '\\' I am posting my javascript function he <a href="#" onclick="OpenDocPreview('<%# Eval("PATH")%>'.replace(/\\/g,"\\\\"), '<%# Eval("Filename")%>')"><%# Eval("DocTitle") %></a> function OpenDocPreview(url, docname) { alert('message from search base : ' + url + ' ' + docname); } thank you, Hi guys , i have this function that allows me to hide a <div ID="ID1"> . function hide(X) { document.getElementById('X').style.visibility='hidden'; } <p><a href="#" onclick="hide('ID1');">show me/</a></p> <div ID="ID1" style="visibility:hidden">This is the content</div> the issue the function only works when i change X by ID1. i want to make it for any ID called with the function by assigning any DIV "ID" as an argument. any help ? thanks Ok, guys. I'm new to JavaScript, so go easy. I'll be asking bunches of "dumb" questions for a while. 1st question, and the only one for now ... Say I have the following function: Code: function SwapValues(SwapVal1,SwapVal2)
{
TempSwapVal=SwapVal1;
SwapVal1=SwapVal2;
SwapVal2=TempSwapVal;
}
I don't care about the return value of the function itself, but I do need the new values of SwapVal1 and SwapVal2. In ASP when I do this, the values get returned. How do I get this to work in JS? I started Javascript yesterday. I am trying to make the function Captain Obvious simply say what button you are pressing in an alert box, but after I click the button, nothing happens at all, no error message or anything. I have tried it with no argument inside the script call, and then it sort-of works. The alert box comes up saying: "You have clicked on a button that says "undefined"." I am pretty sure that means that I am having a problem passing the argument when I call it, but to be honest I have no clue lol Code: <head>
<script type="text/javascript">
function CaptainObvious('choice')
{
alert("Captain Obvious:You have clicked on a button that says ''"+choice+"''.");
alert("Just fulfilling my public duties.")
}
</script>
</head>
<body>
<form>
<input type="button" value="Apple" onclick=CaptainObvious("apple")>
</form>
Any ideas? PHP Code: function $(x) { return document.getElementById(x); } function test(x) { alert(x.id); } function init() { var o = {}; o.id = "a"; $("one").addEventListener("click", function () {test(o);}); o.id = "b"; $("two").addEventListener("click", function () {test(o);}); o.id = "c"; $("three").addEventListener("click", function () {test(o);}); } window.onload = init; I have some code similar to this. When the HTML elements with id's "one", "two", or "three" are clicked, they all alert "c", but I want them to alert the respective values (a, b, and c). How can I pass the object by value and not by reference? I guess in this simple example you would just define two more objects, but my code is actually within a for-loop. The object properties are changed each iteration (ideally each iteration creates a new object) and then passed to the function. I'm trying to make it so when you click a cell in a table it runs a function based on the value within that cell. With the current code, no matter what cell is clicked, the alert box displays the same number, which is the last number in my array. The variable, princ, is just being overwritten rather than writing code to each the cell with the proper value. Help is appreciated. Thanks. Code: for(i=0;i<=3;i++){
document.writeln('<tr>');
document.writeln('<th>'+(periodArray[i])+'</th>');
for(j=0;j<=2;j++){
princ = principleArray[j][i];
document.writeln('<td onclick="(calculateInterest(princ,1,1))">$'+principleArray[j][i]+'</td>');
}
document.writeln('</tr>');
}
function calculateInterest(principle,rate,period){
totalInterest = principle * rate * period;
totalLoanCost = principle + totalInterest;
alert('Total Interest: '+totalInterest+'\n'+'Total Loan Cost: '+totalLoanCost);
}
First off I didn't know whether to post this here or in the PHP section since it deals with both, but mostly JS. I have a PHP scraper that scrapes the job title, company name and location from a website and stores them in separate arrays. These values are then extracted out one at a time from the array and stored into a string, that is then passed to a Google Maps API. I can make this successfully happen once, the thing is I need to do it multiple times. I have an idea on what I should do but don't really know how to implement it (correctly). The idea I had was to create a function in the JavaScript section that accepts three values from PHP. This function would be called in my PHP for loop that extracts the values from the array into a string. The thing that confuses me is that the Map function is called via <body onLoad="initialize()">. Here's the link to my code I want to pass dynamic array values to java script function.how its possible. explain with some code.........
Hi, New to JS. Have ordered some new books, but need to get somethings going in the mean time. What I wanted to do is to link to a new page having a date range input in the form of 6 text boxes, 2 sets of mm-dd-yy, from and to, where the upon loading the page box 1 of the from would auto focus and then auto tab and then post where php could take over on the server side. Setting up the form and the lay out, no problem. Auto focusing went just like expected using the following code, included because on the next step everything fell apart. [/CODE] <script type="text/javascript" > window.onload=function() { document.getElementById("input1").focus(); } </script> [/CODE] So then the wheels came off and in response, began to simplify what was trying to be done to find where the issues were. As far as I can get working is: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<script type="text/javascript" >
window.onload=function() {
document.getElementById("input1").focus();
}
</script>
<script type="text/javascript" >
function myFunc() {
alert("is this working");
}
</script>
</head>
<body>
<input id="input1" name="input1" type="text" onkeyup="myFunc()" maxlength="2" value="type a No." />
</body>
</html>
First issue with this: When I first get to the page everything is just as ordered. The focus is on the text box and the default value is "type a No." When I press a key onkeyup, I bring up the alert box with "is this working" in it. But when I refresh the page with the refresh button, after clicking the "ok" on the alert box, the character that was typed in is still displayed. If I use the link to the page, or the URL from the address bar, then the page reloads properly with the default value, "type a No". Question 1: How do you get the default textbox value using the refresh button as apposed to reloading the page using a link or from the address bar? Using Firefox 8.0 Second and more important at the moment: If I change the script to pass an argument to the function the script crashes. It does not pull up an alert box and freezes. My guess is that I'm doing something wrong on a concept level. NOTE: changed the default value of the text box to " ". Looked like to me there was an issue with the size specification and the default string length as you could only enter in a key stroke by highlighting the text and replacing it Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<script type="text/javascript" >
window.onload=function() {
document.getElementById("input1").focus();
}
</script>
<script type="text/javascript" >
function myFunc(awe) {
alert(awe);
}
</script>
</head>
<body>
<input id="input1" name="input1" type="text" onkeyup="myFunc("123")" maxlength="2" value="" />
</body>
</html>
Question 2: can someone straighten me out with this? I have a simple function to display an image when called, but if I try to rewrite the function to take the image as an argument, it stops working. I've looked at other function examples on the web but can't figure out what I am missing. Can anyone help? works: Code: <html>
<script language="JavaScript">
var ImagePlusSign = '<img src="plus.jpg" name="slide" width="65" height="50"/>';
function FlashImagesThenWait()
{
document.getElementById("first").innerHTML = ImagePlusSign
}
setTimeout(FlashImagesThenWait, 1500);
</script>
<body>Hello.
<div id="first">
</div>
</body>
</html>
does NOT work : Code: <html>
<script language="JavaScript">
var ImagePlusSign = '<img src="plus.jpg" name="slide" width="65" height="50"/>';
function FlashImagesThenWait(z)
{
document.getElementById("first").innerHTML = z
}
setTimeout(FlashImagesThenWait(ImagePlusSign), 1500);
</script>
<body>Hello.
<div id="first">
</div>
</body>
</html>
Hi, Any one help me In one variable i have some data ex: var data = document.getElementById("imageId").value; I want to pass this data to another function inside another function ex: var button1 = '<img src="images/Remove-button.gif" width="70" height="15" onclick="removeVerifyImageRow(this),saveLibData('+data+')"/>'; while running the application i am getting an error incase if the data is string ex:if data is 'image1' i am getting an error, but with number there is no problem ex: if data is '1122'. this is very urgent to solve this problem plz any one help me Thank you in advance if someone can help. I have been banging my head against the wall for hours now. Here is the code: Code: for (var i = 0; i < BS_crm['activityTypes'].length; i++) {
var clickFunc = function(){ activityList.showForm( -1, {blockType:[""+BS_crm['activityTypes'][i]['id'], "0"]} ); };
var type = {
value: BS_crm['activityTypes'][i]['id'],
label: "Add New "+BS_crm['activityTypes'][i]['label'],
css: BS_crm['activityTypes'][i]['css']+"_16",
onClick: clickFunc
};
previewLinks.items.push( type );
}
Now, basically what I am doing here is running through one array to create an array of objects, that will be used to create links that will use whatever onClick function I pass it. The problem is that on the second line I need the BS_crm['activityTypes'][i]['id'] to be a value, not a reference. If that line was simply changed to: Code: var clickFunc = function(){ activityList.showForm( -1, {blockType:["3", "0"]} ); };
then everything would work as I need. How can I make this happen? I would really appreciate any help. Thank you again in advance. I'm used to java so I keep wanting to us something like someOtherObject.someMethod(this); function someOtherObject = function(){} someOtherObject.prototype.someMethod = function(object){ object.doSomething(); } I can't seem to get it to work I'm not trying to pass a DOM object, I'm trying to pass a custom function object. Any help would be greatly appreciated Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>
Jackhammer
</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<script type="text/javascript">
/* <![CDATA[ */
var jackhammers = new Array(11);
var curJackhammer = 0;
var direction;
var begin;
jackhammers[0] = "jackhammer0.gif";
jackhammers[1] = "jackhammer1.gif";
jackhammers[2] = "jackhammer2.gif";
jackhammers[3] = "jackhammer3.gif";
jackhammers[4] = "jackhammer4.gif";
jackhammers[5] = "jackhammer5.gif";
jackhammers[6] = "jackhammer6.gif";
jackhammers[7] = "jackhammer7.gif";
jackhammers[8] = "jackhammer8.gif";
jackhammers[9] = "jackhammer9.gif";
jackhammers[10] = "jackhammer10.gif";
function bounce()
{
if(curJackhammer == 10)
curJackhammer = 0;
else
++curJackhammer;
/*
Firefox does not register an error with the line of code below, but other browsers do . . .
It looks like it is a typo left over from the slightly more advanced technique in 10-4 where
jackhammers.src is defined. Also, were you to comment out the final line in this function you would
see the animation does not work. In browsers other than Firefox which apparently just ignores
this code and no animation occurs, the image element is assigned the source value of "undefined"
and of course no image is named "undefined".
*/
document.getElementsByTagName('img')[0].src = jackhammers[curJackhammer].src;
if(curJackhammer == 0)
direction = "up";
else if(curJackhammer == 10)
direction = "down";
document.getElementsByTagName('img')[0].src = jackhammers[curJackhammer];
}
function startBouncing()
{
if(begin)
clearInterval(begin);
begin = setInterval("bounce()",90);
}
/* ]]> */
</script>
</head>
<body>
<h1>
Jackhammer Man
</h1>
<p>
<img src="jackhammer0.gif" height="113" width="100" alt="Image of a man with a jackhammer." />
</p>
<form action="" enctype="text/plain">
<p>
<input type="button" value="Start Bouncing" onclick="startBouncing();" />
<input type="button" value="Stop Bouncing" onclick="clearInterval(begin);" />
</p>
</form>
</body>
</html>
My teacher insists that the above code is valid (straight out of our book). He says this because (I'm guessing) it runs okay in Firefox and other browsers. It also throws a ton of error messages in Chrome and makes no logical sense. We define the values of the jackhammer array as literal strings, and then the book instructs us to change the source of the image element on the page to jackhammers[i].src. It then has us change the source of the image element again, correctly at the end of the function. It also has us create a useless variable: "direction" (and I say useless because we never use it, it is just fluff I guess). On a side note, would some of you guys like to check out this animation I created here and let me know what you think. Thanks guys. Hi there, I am trying to pick the larger of 5 numbers and sometimes there is a tie. I would like to prioritize variable c1 if there is a tie. This data is from a quiz I am writing. var c1 = 2; // Takes priority if there is a tie. var c2 = 1; var c3 = 2; var c4 = 0; var c5 = 0; How do I pass an id to a function?? Or is this even possible. Code: <html>
<head>
<title>
JavaScript array passing example
</title>
<script type="text/javascript">
function init(){
display(addText1);
display(addText2);
display(addText3);
display(addText4);
}
function display(var myText){
var newText = '<h2>' + "Will this change anything..." + '</h2>';
document.getElementById('myText').innerHTML = newText;
}
</script>
</head>
<body onload="init()">
<div id="addText1"></div>
<div id="addText2"></div>
<div id="addText3"></div>
<div id="addText4"></div>
</body>
</html>
Hi, I want to pass a javascript function's return value, to an anchor tag's href parameter i.e. <a href> Suppose I have a function called getTrackingCode( ) that contains a value "testSite" Code: <script language = "JavaScript">
function getTrackingCode( )
{
return "testSite";
}
</script>
Now I want to pass this function's value to anchor's href, I have attempted these: Code: 1. <a href="http://www.helloworld.com/?id=" + getTrackingCode( )> 2. <a href="javascript: document.location= 'http://www.helloworld.com/?id=' + getTrackingCode( );"> So that the resulting URL becomes http://www.helloworld.com/?id=testSite But none of the procedures work. Please help me do it. NOTE: Please note that I can't use the function with document.write to write the whole tag because that would be very hard to manage as I will have to use it in case of text links, image links, hotspots etc. and for each I would have to write a separate function. Furthermore, I don't want the Status bar of the browsers to show something like javascript:location.href (); etc. I want the actual href link to be seen in the Status bar, as if no javascript manupulation is done. In a nutshell, the code should be reusable for the href paramater in anchor tag's href of any element, be it a text link, image link, script link, hotspot or link area and doesn't show javascript function calling in the Status bar of the browser. I've heard that I can do such a thing using ElementbyID etc. but have no idea. Please help me with this, Thanks much! I found a simple script, and I'm trying to customize it just a hair to accept the ID, and I'm doing something wrong. Evidently, I'm completely useless at JS Code: There is <span id="id1234" style="visibility: hidden">NOT </span>hidden content here.
<script type="text/javascript">
function showIt(uniqueID) {
document.getElementById(uniqueID).style.visibility = "visible";
}
setTimeout("showIt(id1234)", 2000); // after 2 sec's
</script>
I want to be able to pass the ID in when I call the function. How would do that? Hello I am trying to call a javascript autocomplete function but I want to use a variable instead of an input field ID So this is my fuction: Code:
$(function() {
$("#tags").autocomplete({
source: "search.php?field=field1"
});
});
<p><b>Field:</b><input type="text" input id = "tags" name="field1" size="60" ><br>
Basically I want to use the same function for numerous input fields, so how can I pass a var instead of the input id ? Any help would be appreciated I am trying to pass a value to another function, seems to work with the other function i have but not this one? any reasons why this wont work? Code: /* ---------------------------- */
/* XMLHTTPRequest Enable */
/* ---------------------------- */
function createObject() {
var request_type;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
request_type = new ActiveXObject("Microsoft.XMLHTTP");
}else{
request_type = new XMLHttpRequest();
}
return request_type;
}
var http = createObject();
/* -------------------------- */
/* SEARCH */
/* -------------------------- */
function autosuggest(q,f,r) {
alert(q+' '+f+' '+r);
// q = document.getElementById(var f).value; //
// Set te random number to add to URL request
nocache = Math.random();
http.open('get', 'ajax_search_for_airport.php?q='+q+'&f'+f+'&r'+r+'&nocache = '+nocache);
http.onreadystatechange = autosuggestReply(r);
/* this line is not working as expected, it kicks up an error
Message: Type mismatch
Line: 26
Char: 1
Code: 0
i am wanting to pas the value of r to the other function.
*/
http.send(null);
}
function autosuggestReply(r) {
if(http.readyState == 4){
var response = http.responseText;
e = document.getElementById(r);
if(response!=""){
e.innerHTML=response;
e.style.display="block";
} else {
e.style.display="none";
}
}
}
function fill(r,fieldid,resultsid) {
e = document.getElementById(fieldid);
e.value=r;
document.getElementById(resultsid).style.display="none";
}
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