Boolean Opposites

Feb 15, 2007

Is there a way to write this simpler?


function makeOpposite(a) {
if(!a) {
a = true;
}
else {
a = false;
}
}

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Boolean Value For A Button?

Dec 7, 2010

I'm trying to modify this function code...

which works for a checkbox to one that works for a button.

I guess I'm stuck on what to replace "checked" with there in the 3rd line.

is there some one word answer, or do I need to I rewrite the function to be more button-friendly?

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Boolean Function Parameter

Jul 23, 2005

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.

JS Function -

function ShowSpecifiedPeriod(pShowPeriod){
document.mfperformance.ShowPeriod.value = pShowPeriod
document.mfperformance.method = 'get'
document.mfperformance.action = 'composite_requestdata.asp'
document.mfperformance.submit();
}

ASP Event Handler -

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

Please let me know what I am doing wrong here.

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Getting A Return Boolean For An Asynchronous Request?

Dec 24, 2009

I'm trying to get a return boolean or something I could use to then do another asynchronous request have my first has completely finished.

I'm messing around with Javascript on this basic PHP blog I built and I have a table of articles and one of the table columns is published/unpublished. I'm trying to have when they click the icon it will connect to MySQL, update the current row with new publish value (opposite of current) then refresh the div id element that the publish/unpublish icon is in to reveal the new status. I built a class for my javascript requests so most values are stored in global properties.

I think what I'm coming across is when I click the icon it updates the table but before that onreadystatechange can hit 4 my request for the new content is going through so the request url I'm using as well as the return div id for the responseText are getting mixed up between trying to do a sql update, loading the responseText in "message" then trying to sql query for the new results and loading that responseText in "content".

Something like..

url = "?table=articles&value=1&id=2";
http.onreadystatechange = this.stateChange;
http.open("GET" , url , true)

[Code]....

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Boolean Function To Hide / Show DIV

Mar 20, 2010

I am very new to javascript and html. I am trying to create a function which will hide or show a div (div1). Right now, it is always showing the div whether the boolean value is true or false. I know that it is getting inside the else if part, but it doesn't seem to be working.

<script type="text/javascript">
function hideDiv(flag){
if (flag == false){
document.getElementById('div1').style.visibility="visible";
}else if (flag == true){
document.getElementById(div1).style.visibility="hidden";
}}
var bool = new Boolean(true)
hideDiv(bool);
</script><body>
<div id="div1">
Text!
</div></body>

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JQuery :: Alternating Bg Colors In A List Depending On Boolean Value

Apr 22, 2009

I have a list that looks like this:

<ul id="thisList">
<li class="this0">content</li>
<li class="this1">content</li>
<li class="this1">content</li>

[Code].....

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