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How and why does 'a'['toUpperCase']() in JavaScript work?
...
foo.bar and foo['bar'] are equal so the code you posted is the same as
alert('a'.toUpperCase())
When using foo[bar] (note tha lack of quotes) you do not use the literal name bar but whatever value the variable bar contains. So using the foo[] notation instead of foo. allows you to use a dynami...
Accessing Session Using ASP.NET Web API
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This solution has the added bonus that we can fetch the base URL in javascript for making the AJAX calls:
_Layout.cshtml
<body>
@RenderBody()
<script type="text/javascript">
var apiBaseUrl = '@Url.Content(ProjectNameSpace.WebApiConfig.UrlPrefixRelative)';
</s...
What is meant by 'first class object'?
...E!"};
}
else {
return function (){ return "Holy CRAP!"};
}
}
alert("Men like women is " + men(like(women))); // -> "Holly TRUE!"
alert("Women like men is " + women(like(men))); // -> "Holly TRUE!"
alert("Men like aliens is " + men(like(aliens))); // -> "Holly CRAP!"
alert("Al...
What's the difference between using “let” and “var”?
...function scope is confusing and was one of the main sources of bugs in JavaScript.
Take a look at this example from another stackoverflow question:
var funcs = [];
// let's create 3 functions
for (var i = 0; i < 3; i++) {
// and store them in funcs
funcs[i] = function() {
// each should...
Getting the parent div of element
...>
<button onclick="parentFinder()">Find Parent</button>
<script>
function parentFinder()
{
var x=document.getElementById("demo");
var y=document.getElementById("*id of Element you want to know parent of*");
x.innerHTML=y.parentNode.id;
}
</script>
<!-- Patc...
innerText vs innerHTML vs label vs text vs textContent vs outerText
I have a dropdown list which is populated by Javascript.
6 Answers
6
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jQuery Ajax POST example with PHP
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And then you can get it like:
ajaxRequest.done(function (response){
alert(response);
});
There are a couple of shorthand methods. You can use the below code. It does the same work.
var ajaxRequest= $.post("test.php", values, function(data) {
alert(data);
})
.fail(function() {
al...
Are there legitimate uses for JavaScript's “with” statement?
...s:
for (var i=0; i<3; ++i)
{
var num = i;
setTimeout(function() { alert(num); }, 10);
}
Because the for loop does not introduce a new scope, the same num - with a value of 2 - will be shared by all three functions.
A new scope: let and with
With the introduction of the let statement in ES6...
Convert string to number and add one
...r newcurrentpageTemp = parseInt($(this).attr("id"));
newcurrentpageTemp++;
alert(newcurrentpageTemp));
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Regex to check whether a string contains only numbers [duplicate]
... isSame:function(str1,str2){
return str1 === str2;
}
};
alert(validation.isNotEmpty("dff"));
alert(validation.isNumber(44));
alert(validation.isEmailAddress("mf@tl.ff"));
alert(validation.isSame("sf","sf"));
...