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How can I check if a checkbox is checked?
...ked is boolean property so you can directly use it in IF condition:-
<script type="text/javascript">
function validate() {
if (document.getElementById('remember').checked) {
alert("checked");
} else {
alert("You didn't check it! Let me check it for...
JavaScript equivalent of PHP’s die
Is there something like "die" in JavaScript? I've tried with "break", but doesn't work :)
14 Answers
...
Global variables in Javascript across multiple files
A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called.
...
Twitter Bootstrap alert message close and open again
...uery's .hide() method instead.
The fix-it-quick method:
Using inline javascript to hide the element onclick like this:
<div class="alert" style="display: none">
<a class="close" onclick="$('.alert').hide()">×</a>
<strong>Warning!</strong> Best check yo se...
Use of 'prototype' vs. 'this' in JavaScript?
...o the object using "this"
var A = function () {
this.x = function () { alert('A'); };
};
A.prototype.updateX = function( value ) {
this.x = function() { alert( value ); }
};
var a1 = new A();
var a2 = new A();
a1.x(); // Displays 'A'
a2.x(); // Also displays 'A'
a1.updateX('Z');
a1.x(); ...
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...
Web安全测试之XSS - 更多技术 - 清泛网 - 专注C/C++及内核技术
Web安全测试之XSSXSS 全称(Cross Site Scripting) 跨站脚本攻击， 是Web程序中最常见的漏洞。指攻击者在网页中嵌入客户端脚本(例如JavaScript), 当用...XSS 全称(Cross Site Scripting) 跨站脚本攻击， 是Web程序中最常见的漏洞。指攻击者在网页...
Making a Simple Ajax call to controller in asp.net mvc
... Not a fan of this, it encourages coupling of the view and the javascript, but uh, username checks out?
– Halter
Nov 8 '17 at 22:37
...
++someVariable vs. someVariable++ in JavaScript
...+ evaluates the value, then increments and stores it.
var n = 0, m = 0;
alert(n++); /* Shows 0, then stores n = 1 */
alert(++m); /* Shows 1, then stores m = 1 */
Note that there are slight performance benefits to using ++x where possible, because you read the variable, modify it, then evaluate ...
How does the “this” keyword work?
...he this keyword is and how it is correctly (and incorrectly) used in JavaScript on the Stack Overflow site.
22 Answers
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