javascript element body.onclick attatch event setTimeout
I want to make popup div that disappears when i click outside of it. I need pure js, not a jQuery or something. So i do the following...
function that make div to dissapear:
function closePopUps(){
if(document.getElementById('contact-details-div'))
document.getElementById('contact-details-div').style.display = 'none';
//...same code further...
}
function closePopUpsBody(e){
//finding current target - http://www.quirksmode.org/js/events_properties.html#target
var targ;
if (!e) var e = window.event;
if (e.target) targ = e.target;
else if (e.srcElement) targ = e.srcElement;
if (targ.nodeType == 3) // defeat Safari bug
targ = targ.parentNode;
//is we inside div?
while (targ.parentNode) {
//filtering "Close" button inside div
if (targ.className && targ.className == 'closebtn')
break;
if (targ.className && targ.className == 'contact-profile-popup')
break;
targ = targ.parentNode;
}
//if it not a div, or close button, hide all divs and remove event handler
if ((targ.className && targ.className == 'closebtn')
|| !(targ.className && targ.className == 'contact-profile-popup')) {
if(document.getElementById('contact-details-div'))
document.getElementById('contact-details-div').style.display = 'none';
//...some more code here...
document.body.onclick = null;
}
}
maybe this code is ugly, but this not a main problem...
main problem is when i attach an event to body, it executes immediately! and div dissapears immediately, i even don't see it.
<tr onclick="
closePopUps();
document.getElementById('contact-details-div').style.display='block';
document.body.onclick = closePopUpsBody;
return false;">
i though if i don't use parentheses, it will not executes?
document.body.onclick = closePopUpsBody(); //this executes
document.body.onclick = function(){closePopUpsBody()}; /开发者_Go百科/this is not
document.body.onclick = closePopUpsBody; //this is not
finally i finished with this decision
<tr onclick="
closePopUps();
document.getElementById('contact-details-div').style.display='block';
setTimeout('document.body.onclick = closePopUpsBody;', 500);
return false;">
but i think this is madness. so, what i am doing wrong?
You should stop event bubbling. Simple [demo]
var box = document.getElementById('box');
var close = document.getElementById('close');
// click on a box does nothing
box.onclick = function (e) {
e = e || window.event;
e.cancelBubble = true;
if (e.stopPropagation)
e.stopPropagation();
}
// click everywhere else closes the box
function close_box() {
if (box) box.style.display = "none";
}
close.onclick = document.onclick = close_box;
Usually events are propagated to the parents. If you click on a <div>, then <body> also will have its onClick called.
The first thing is: debug the order of called functions: place window.dump("I am called!") kind of things in your handlers.
I suppose you need to call event.stopPropagation() somewhere in your code. (See https://developer.mozilla.org/en/DOM/event )
About the parentheses question:
document.body.onclick = closePopUpsBody;//this is not
document.body.onclick = closePopUpsBody();//this executes
This executes, because you are calling a function closePopUpsBody() to return a value which will be assigned to the onclick property. In JavaScript the function name represents the function object (as any other variable). If you place parentheses after a variable name, then you say: 'execute it for me, as a function`.
Here 's a full example of how you could accomplish that.
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title></title>
<style>
body { font-family: Tahoma; font-size: 1.1em; background: #666666; color: White; }
#layer01 { border: 1px solid black; width: 200px; height: 100px; position: absolute;
top: 100px; left: 100px; background: white; padding: 10px; color: Black;
display: block; }
</style>
</head>
<body>
Click anywhere outside the layer to hide it.
<div id="layer01"> Test Layer </div>
<script type="text/javascript">
isIE = (window.ActiveXObject) ? true : false;
document.onclick = function (e) {
var l = document.getElementById("layer01");
if (!isIE && e.originalTarget == l)
e.stopPropagation();
else if (isIE && event.srcElement == l)
event.cancelBubble = true;
else
l.style.display = "none";
}
</script>
</body>
</html>
加载中,请稍侯......
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