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How to find the sum of an array of numbers
...ray is built
// from user input as it may be exploited eg:
eval([1,"2;alert('Malicious code!')"].join('+'))
Of course displaying an alert isn't the worst thing that could happen. The only reason I have included this is as an answer Ortund's question as I do not think it was clarified.
...
Check if object is a jQuery object
...t" },
b = $('body');
if ( a.jquery ) { // falsy, since it's undefined
alert(' a is a jQuery object! ');
}
if ( b.jquery ) { // truthy, since it's a string
alert(' b is a jQuery object! ');
}
share
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is it possible to change values of the array when doing foreach in javascript?
...ree"];
arr.forEach(function(part) {
part = "four";
return "four";
})
alert(arr);
First off, here is where you should be reading about Array.prototype.forEach():
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
Second, let's talk briefly about v...
When should I use double or single quotes in JavaScript?
...ichever best suits the string.
Using the other type of quote as a literal:
alert('Say "Hello"');
alert("Say 'Hello'");
This can get complicated:
alert("It's \"game\" time.");
alert('It\'s "game" time.');
Another option, new in ECMAScript 6, is template literals which use the backtick character:
a...
Javascript swap array elements
...
Even without utilizing ECMAScript 6 Destructuring Assignment, can actually achieve a simultaneous swap without polluting the current scope with a temporary variable: a = [b, b = a][0]; as pointed out by @Jan Although I still find myself utilizing the t...
Xcode 4: How do you view the console?
...rget (Gray Icon)
Select the Build Phases (Top Center)
Add Build Phase "Run Script" (Green Plus Button, bottom right)
In the textbox below the Shell textfield replace
"Type a script or drag a script file from your workspace" with
"open ${TARGET_BUILD_DIR}/${TARGET_NAME}"
This will open a terminal w...
Jquery Ajax Posting json to webservice
...on/json; charset=utf-8",
dataType: "json",
success: function(data){alert(data);},
error: function(errMsg) {
alert(errMsg);
}
});
The key to avoiding the invalid JSON primitive issue is to pass jQuery a JSON string for the data parameter, not a JavaScript object, so that jQue...
What does ':' (colon) do in JavaScript?
... method1 : function() { /* do nothing */ },
array: [5, 3, 6, 7]
};
alert(o.property1); // Will display "125"
A subset of this is also known as JSON (Javascript Object Notation) which is useful in AJAX calls because it is compact and quick to parse in server-side languages and Javascript ca...
Why doesn't JavaScript have a last method? [closed]
Its kinda weird that the JavaScript Array class does not offer a last method to retrieve the last element of an array. I know the solution is simple (Ar[Ar.length-1] ), but, still, this is too frequently used.
...
What is the difference between ui-bootstrap-tpls.min.js and ui-bootstrap.min.js?
...transition"
"ui.bootstrap.collapse"
"ui.bootstrap.accordion"
"ui.bootstrap.alert"
"ui.bootstrap.bindHtml"
"ui.bootstrap.buttons"
"ui.bootstrap.carousel"
"ui.bootstrap.position"
"ui.bootstrap.datepicker"
"ui.bootstrap.dropdownToggle"
"ui.bootstrap.modal"
"ui.bootstrap.pagination"
"ui.bootstrap.toolti...