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How can I find the length of a number?
...have to make the number to string in order to take length
var num = 123;
alert((num + "").length);
or
alert(num.toString().length);
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follo...
How can I bind to the change event of a textarea in jQuery?
... oldVal = currentVal;
//action to be performed on textarea changed
alert("changed!");
});
jsFiddle Demo
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What is the correct JSON content type?
...(Form form, int httpStatus, String responseText)
{
MessageBox.alert("Error");
}
@Override
public void onActionComplete(Form form, int httpStatus, String responseText)
{
MessageBox.alert("Success");
}
});
In case of using application/json response type, th...
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.
...
Use dynamic (variable) string as regex pattern in JavaScript
...this is #abc# some #abc# stuff.";
var output = input.replace(regex, "!!");
alert(output); // Hello this is !! some !! stuff.
JSFiddle demo here.
In the general case, escape the string before using as regex:
Not every string is a valid regex, though: there are some speciall characters, like ( or [....
Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
...：通过 LayoutParams 设置窗口属性
权限系统：需要 SYSTEM_ALERT_WINDOW 权限
边距设置
重叠视图的边距列表格式：
索引 0：左边距
索引 1：上边距
索引 2：右边距
索引 3：下边距
动画效果
...
How do I add a delay in a JavaScript loop?
...t triggers one after the other in quick succession. That is why your first alerts pops up after 3 seconds, and all the rest follow in succession without any delay.
You may want to use something like this instead:
var i = 1; // set your counter to 1
function myLoop() { ...
event.preventDefault() function not working in IE
...ault always works
$("mootoolsbutton").addEvent('click', function(event) {
alert(typeof(event.preventDefault));
});
// preventDefault missing in IE
<button
id="htmlbutton"
onclick="alert(typeof(event.preventDefault));">
button</button>
For all jQuery users out there you can fix ...
How do I implement onchange of with jQuery?
..., so the way to do it is
$('input.myTextInput').on('input',function(e){
alert('Changed!')
});
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Deleting array elements in JavaScript - delete vs splice
...myArray[2];
for (var count = 0; count < myArray.length; count++) {
alert(myArray[count]);
}
Whereas this will display "a", "b", "d"
myArray = ['a', 'b', 'c', 'd']; myArray.splice(2,1);
for (var count = 0; count < myArray.length; count++) {
alert(myArray[count]);
}
...