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How Many Seconds Between Two Dates?
...
Just subtract:
var a = new Date();
alert("Wait a few seconds, then click OK");
var b = new Date();
var difference = (b - a) / 1000;
alert("You waited: " + difference + " seconds");
...
Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?
...e answer provides a way to update a single package across the solution. My script will go through every NuGet package in the solution and retarget it across the solution. The answer is perfect for a single project but the script I provided may be better if you have a lot of packages that need to be ...
JavaScript loop through json array?
...ate like this :
for (var key in json) {
if (json.hasOwnProperty(key)) {
alert(json[key].id);
alert(json[key].msg);
}
}
And it gives perfect result.
See the fiddle here : http://jsfiddle.net/zrSmp/
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...
htmlentities() vs. htmlspecialchars()
... more characters than htmlspecialchars. This is unnecessary, makes the PHP script less efficient and the resulting HTML code less readable.
htmlentities is only necessary if your pages use encodings such as ASCII or LATIN-1 instead of UTF-8 and you're handling data with an encoding different from ...
jQuery, simple polling example
...
function doPoll(){
$.post('ajax/test.html', function(data) {
alert(data); // process results here
setTimeout(doPoll,5000);
});
}
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淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...QL的有益补充
在MyFOX出现之后，一切都看起来那么完美，开发人员甚至不会意识到MyFOX的存在，一条不用任何特殊修饰的SQL语句就可以满足需求。这个状态持续了很长一段时间，直到有一天，我们碰到了传统的关系型数据库无法...
How to debug a Flask app
...ep through the code with breakpoints. The run configuration can point to a script calling app.run(debug=True, use_reloader=False), or point it at the venv/bin/flask script and use it as you would from the command line. You can leave the reloader disabled, but a reload will kill the debugging context...
Map vs Object in JavaScript
...on individual elements.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map
The iterability-in-order is a feature that has long been wanted by developers, in part because it ensures the same performance in all browsers. So to me that's a big one.
The myMap.has(ke...
For..In loops in JavaScript - key value pairs
...
for (var k in target){
if (target.hasOwnProperty(k)) {
alert("Key is " + k + ", value is " + target[k]);
}
}
hasOwnProperty is used to check if your target really has that property, rather than having inherited it from its prototype. A bit simpler would be:
for (var k in t...
How should I call 3 functions in order to execute them one after the other?
...e this is equivalent to the following:
window.setTimeout(function() {
alert("!");
// set another timeout once the first completes
window.setTimeout(function() {
alert("!!");
}, 1000);
}, 3000); // longer, but first
Here's a general asynchronous looping function. It will ca...