Case-sensitive?
Safari: no
FF3: Yes
Regex in Javascript
To utilize the grouping in javascript regex, you have to use exec() instead of match() or replace().
function getXFromId(id){
var regex = /x(\d)y(\d)/gi;
var idMatch = regex.exec(id);
if(idMatch){
return idMatch[1]; // the grouping results are storing in an array.
}
else{
return idMatch[1];
}
}
Default arguments in Javascript[1]
Remember the phrase "default arguments" first, and second remember the traditional way to define default arguments is not working in Javascript. I used JQuery, so the definition can be the following:
function loadBadge(o){
o = $.extend({
arg1: null,
arg2: false
}, o || {});
...
o.arg1
o.arg2
...
}
loadBadge({
arg1: "hello world",
arg2: true
});
loadBadge({
arg1: "hello world",
});
"new form.element.observer" is better for textbox observe than keyup.
How to avoid KEY_RETURN auto refresh in Safari?[2]
<script language="JavaScript" type="text/javascript">
function checkCR(evt) {
var evt = (evt) ? evt : ((event) ? event : null);
var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
if ((evt.keyCode == 13) && (node.type=="text")) {return false;}
}
document.onkeypress = checkCR;
</script>
How to make getJSON work on cross-domain issue?[3]
1. JSON string has to be free of line breaks;
$.getJSON("http://api/feed/view.php?jsoncallback=?", function(data){
...
});
2. The api server must be generate a method named the same as the value of the callback parameter on the client side;
PHP Code:
echo $_GET['jsoncallback']; ({ "status":200, "messages":[], "return":{ "Shares":[ { "ID" ....
3. Don't worry about whether to include JS from the API server. It does not matter.
"return" is a reserved word in Javascript, especially in Safari.
It cannot be a object name in JSON, otherwise it will break, totally. One solution is that, to stringfy the JSON object, replace the reserved words, and parse it.
$.getJSON is actually not secured.[4]
The solution is, use $.ajax/$.get, and parse it by yourself.
For some reason, the array inside of a JSON object is stringfied, when I used JQuery and Prototype at the same time.
I have to do the conversion below:
obj = eval('('+str+')');
history.go(-1) doesn't work in Safari?
NOT work in Safari
<a href="#" onclick="history.go(-1);">text</a>
WORK for all the browsers
<a href="javascript:history.go(-1);">text</a>
NO COMPLETE jsonp callback in jQuery[5]
"Currently, there's no easy way to abort a JSONP call once it's been fired, because no reference to the window-scoped callback function (or injected script tag) is returned. Just as an XHR request returns the XHR object, JSONP calls should return a handler that allows callback cancellation. "
Safari 3 can read non-200 callback.
