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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...
Why are iframes considered dangerous and a security risk?
...useful protection from the reverse case. If you have a lot of third party scripts on your site you need to isolate forms from them. One suggested way of doing that was putting the form in its own minimal page with no third-party javascript, and displaying it in an iframe in the host page. hackern...
Accessing Session Using ASP.NET Web API
...
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...
jQuery.click() vs onClick
...ElementById('myelement');
myEl.addEventListener('click', function() {
alert('Hello world');
}, false);
myEl.addEventListener('click', function() {
alert('Hello world again!!!');
}, false);
http://jsfiddle.net/aj55x/1/
Why use addEventListener? (From MDN)
addEventListener is the...
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"));
...
Convert string to number and add one
...r newcurrentpageTemp = parseInt($(this).attr("id"));
newcurrentpageTemp++;
alert(newcurrentpageTemp));
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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...
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...
html onchange event not working
... and dynamic inputs:
$(document).on('input', '.my-class', function(){
alert('Input changed');
});
For static inputs only:
$('.my-class').on('input', function(){
alert('Input changed');
});
JSFiddle with static/dynamic example: https://jsfiddle.net/op0zqrgy/7/
...
innerText vs innerHTML vs label vs text vs textContent vs outerText
I have a dropdown list which is populated by Javascript.
6 Answers
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