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jQuery returning “parsererror” for ajax request
...ether a valid JSON is being returned or not, and if JSON validation fails, alert it on the screen so that its obvious for what purpose the ajax call is actually failing. Have a look at this:
$.ajax({
url: '/Admin/Ajax/GetViewContentNames',
type: 'POST',
dataType: 'text',
data: {view...
HTML: How to limit file upload to be only images?
...r reader = new FileReader();
if(this.files[0].size>528385){
alert("Image Size should not be greater than 500Kb");
$("#menu_image").attr("src","blank");
$("#menu_image").hide();
$('#menu_images').wrap('<form>').closest('form').get(0).reset();
$('...
history.replaceState() example?
... if (typeof e.state == "object" && e.state.foo == "bar") {
alert("Blah blah blah");
}
};
window.history.go(-1);
and search location.hash;
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...
if (key in object) or if(object.hasOwnProperty(key)
... title: "High Performance JavaScript",
publisher: "Yahoo! Press"
};
alert(book.hasOwnProperty("title")); //true
alert(book.hasOwnProperty("toString")); //false
alert("title" in book); //true
alert("toString" in book); //true
In this code, hasOwnProperty() returns true when “title”...
How to add calendar events in Android?
...der, boolean needMailService) {
/***************** Event: note(without alert) *******************/
String eventUriString = "content://com.android.calendar/events";
ContentValues eventValues = new ContentValues();
eventValues.put("calendar_id", 1); // id, We need to choose from
...
What does 'var that = this;' mean in JavaScript?
...
var usesthat = new usesThat('Dave');
var usesthis = new usesThis('John');
alert("UsesThat thinks it's called " + usesthat.returnMe().myName + '\r\n' +
"UsesThis thinks it's called " + usesthis.returnMe().myName);
This alerts...
UsesThat thinks it's called Dave
UsesThis thinks it's ...
Detect the Internet connection is offline?
...d approach is to retry the request a few times. If it doesn't go through, alert the user to check the connection, and fail gracefully.
Sidenote: To put the entire application in an "offline" state may lead to a lot of error-prone work of handling state.. wireless connections may come and go, etc. ...
What is the difference between null and undefined in JavaScript?
...een declared but has not yet been assigned a value, such as:
var TestVar;
alert(TestVar); //shows undefined
alert(typeof TestVar); //shows undefined
null is an assignment value. It can be assigned to a variable as a representation of no value:
var TestVar = null;
alert(TestVar); //shows null
ale...
How should I pass multiple parameters to an ASP.Net Web API GET?
...) {
$.each(data, function (index, v) {
alert(index + ': ' + v.name);
});
},
statusCode: {
404: function () {
alert('Failed');
}
}
});
I hope this helps...
How do I split a string into an array of characters? [duplicate]
...cter in the array as you would any other array.
var s = "overpopulation";
alert(s[0]) // alerts o.
UPDATE
As is pointed out in the comments below, the above method for accessing a character in a string is part of ECMAScript 5 which certain browsers may not conform to.
An alternative method you ...