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JavaScript validation for empty input field
...
An input field can have whitespaces, we want to prevent that.
Use String.prototype.trim():
function isEmpty(str) {
return !str.trim().length;
}
Example:
const isEmpty = str => !str.trim().length;
document.getElementById("name").addEventListener("input", function() {
if(...
Memcache Vs. Memcached [duplicate]
...c difference while storing value. Memcache mostly considers every value as string whereas Memcached stores it value's original type. Thumbs up for your answer !
– NullPointer
Jun 17 '15 at 2:38
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C++ stl stack/queue 的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ue。
定义stack 对象的示例代码如下：
stack<int> s1;
stack<string> s2;
stack 的基本操作有：
入栈，如例：s.push(x);
出栈，如例：s.pop(); 注意，出栈操作只是删除栈顶元素，并不返回该元素，使用top()访问元素。
访问栈顶，如例：s....
jQuery & CSS - Remove/Add display:none
...line "display:none" via jQuery's css-api is by resetting it with the empty string (null does NOT work btw!!).
According to the jQuery docu this is the general way to "remove" a once set inline style property.
$("#mydiv").css("display","");
or
$("#mydiv").css({display:""});
should do the trick p...
How to get text box value in JavaScript
...lems as unicode encoding/decoding operations
so
use this function encoding strings/arrays
function urlencode( str )
{
// http://kevin.vanzonneveld.net3.
// + original by: Philip Peterson4.
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)5.
// * example 1: u...
Get all object attributes in Python? [duplicate]
...looking for, but... attrs = dir(obj) will store the array of attributes as strings in attrs. Then to access them, you can always use getattr(obj, attrs[i]) to get the ith attribute in the attrs array.
– Nick Merrill
Jun 27 '14 at 1:57
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jQuery access input hidden value
...@Html.HiddenFor(m => m.SomeBoolean).)
Then the following will return a string 'False', not a JS boolean!
var notABool = $('#SomeBoolean').val();
If you want to use the boolean for some logic, use the following instead:
var aBool = $('#SomeBoolean').val() === 'True';
if (aBool) { /* ...*/ }
...
How to apply two CSS classes to a single element
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Include both class strings in a single class attribute value, with a space in between.
<a class="c1 c2" > aa </a>
share
|
improv...
Angularjs minify best practice
...riable a and $http to variable b, their identity is still preserved in the strings.
See this page of AngularJS docs, scroll down to A Note on Minification.
UPDATE
Alternatively, you can use ng-annotate npm package in your build process to avoid this verbosity.
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How do I escape a single quote?
...attributes where further escaping is necessary since in VXML <var> a String variable value is indicated as single quotes within the normal double quotes of the attribute definitions: <var name="myvar" expr="'hel\&apos;lo'" />
– Steve Cohen
Oct ...