I've been searching now for quite a while trying to look for a way to give the default value to a function argument if it's not given. For example, in php one would do the follow:
function func_name(foo = 'default') {
...
}
In the above case, if foo isn't supplied while calling for the function, then foo would default to 'default'. I have tried that in javascript, but it doesn't appear to be working, so I am wondering how should I do this in javascript?
I have just started learning JQuery and have a doubt in the below code. $.get('myhtmlpage.html', myCallBack);The doubt is should the 1st parameter of the get function be a HTML file or can it be a unction name?
I want to call java function in javascript.In which we pass one parameter to function and its returns String value which I want to display in alert message.
Captions for the images are called from the parameters of the main function and delivered into a span or div tag with the appropriate id. A very important part of what needs to be in the captions is text compiled by a separate function, in the project library.I've tried this with and without curly, square and round brackets, with and without semicolons and quotes- all with varying results. Sometimes the function is called, but it appears at the very top of the page and nowhere near the proper <span> tag.
addImage(a,b,c,d); // filename, image name and caption are in a, b and c. // d is the variable where I need to write my other function... addRef(t,s); // I need to put addRef in the d parameter of addImage.
I have a simple JS function that I want to return a true or false value based on the parameter passed in. At this point of time I receive the error "'True' is undefined". Here is my code below.
onclick="ShowSpecifiedPeriod(<%If bShowPeriod = false then Response.Write true else Response.Write false%>)"
The ASP variable bShowPeriod is set based on the hidden form field "ShowPeriod" and the initial value is set to false.
More than likely this has to do with the boolean Parameter but I am not sure how to handle this in JS. I have tried the following but receive the same results.
function ShowSpecifiedPeriod(boolean pShowPeriod) - Same Error function ShowSpecifiedPeriod(pShowPeriod boolean) - Same Error
I have an XML string which I want to pass to a java script function, where I am displaying that in different window with use of 'window.open()' method, but it is giving error.
I'm adding buttons to my google map through a loop. I pass some parameters, and the addButtons() function creates the buttons. How can I pass the "task" for the button to the function? In the addDomListener line below, I'm now writing the function name literally, I'd like find a way with a parameter.
// The loop... for (i=0;i<=4;i++) { oCC = addButtons(aCtrls[i],'btnContainerChild');
I have a JSON array data.cells that I need to iterate through to get the values out of and put the values into an onclick event listener.
Right now the variable name data.cells[i].letter is being based through the buildString function for each cell in my board, instead of the value of the variable. Same goes for the x and y variables.
how would function doSomething be written for this to work.
I would also like the hash to be optional and the variables in the hash to be optional. meaning i should also be able to call doSomething(); with no variables in it.
I am trying to pass a variable into document.getElementById and it is returning a null value. I am hoping someone can identify my error and point it out. The frustrating thing is, I got it to work and then changed the code and screwed it up again...ugh. Anyways, here is the HTML side of it (an onclick event in a button, calling a function with these arguments):
FireBug shows the problem is with the first line of the function - it's assigning myDiv null instead of what I want it to assign it (div#myDiv1 I think).
I have a javascript will a) look for a certain value in a drop down box and b) depending on what value is selected open up a div that includes link that when moused over will pop up with an alert box contain the passed parameter. A couple problems with this, one is I am not as sharp on Javascript as I am on PHP, and two, when I manually place a value into the function parameter, if it's a number it works fine, but if its a string or word, it comes up with an undefined error. why the undefined error is coming up only on strings or words?
I've successfully called a variety of functions that have no parameter value such as: function expand() //expand() in this line is merely an example But I'm unsuccessful calling a function with a paramter value such as: function expand(id) Here is the the call line:
I have a question about my array. I have an array called numberarray with 20 elements and i want it to be accepted into a function as a parameter? But i only want the first 10 to be accepted. Does anyone know exactly how i would go about doing this in my function?
I have an image with an onclick function and parameters 0, 1. I want to change the parameters of the onclick function through the same function? <img id="down0" onclick=swap(0,1) /> <javascript> function swap(a,b){ var imgda=document.getElementById('down'+a); imgda.onclick = swap(b,b+1); } </javascript> Normally it should change the onclick to swap(1, 2) but it remains 0, 1.
I have a good understanding of javascript although I am new to working xml. So I am having a problem getting javascript to recognize that my parameter value in my function call is an attribute in my xml. I called the js function like this:
var category; function ebookCategory(category) { if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); [Code]..
I am trying to pass a value using a parameter in html (asp) to a javascript function. When I try to pass a value inside of a variable <INPUT type="submit" value="Next Youth" name=button1 onclick="OnButton1(tst);"> it simply doesn't work (no error msg - just nothing) while if I put a value in the call <INPUT type="submit" value="Next Youth" name=button1 onclick="OnButton1('5393');"> it works fine. The javascript looks like this:
function OnButton1(tst) { var pth = "youth_edit3.asp?cIndex=" + tst; document.YouthEdit.action = pth; document.YouthEdit.submit(); // Submit the page }
I've set tst = "5393" but it won't work when I try to pass it. Only a literal value of '5393' works.
When my page loads, I check for the existence of a cookie value through readCookie(). If there is a value present for the cookie, I would like that to be the default value in function ordering() and that value to be the SELECTED value in ddlProfileNames. In other words, if there is no cookie value, then function ordering will default to ordering("Div1,Div2,Div3,Div4"). If there is a value, then that should be used in function ordering and as the default value in ddlProfileNames. Thanks for any help.
