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Global variables in Javascript across multiple files
...alled = false;
function doFoo()
{
if (!myFunctionWasCalled) {
alert("doFoo called for the very first time!");
myFunctionWasCalled = true;
}
else {
alert("doFoo called again");
}
}
And a page to test it:
<html>
<head>
<title>Test Page</...
How can I detect when the mouse leaves the window?
... // stop your drag event here
// for now we can just use an alert
alert("left window");
}
});
Finally, here is an html page with the script embedded for debugging:
<html>
<head>
<script type="text/javascript">
function addEvent(obj, evt, fn) {
if (ob...
How to write an inline IF statement in JavaScript?
...t( $( '#ABLAHALAHOO' ).text()) > parseInt( $( '#WABOOLAWADO ).text()) ? alert( 'Eat potato' ) : alert( 'You starve' );
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Why can I add named properties to an array as if it were an object?
...
var myArray = Array();
myArray['A'] = "Athens";
myArray['B'] = "Berlin";
alert(myArray.length);
This won't display '2', but '0' - effectively, no elements have been added to the array, just some new properties added to the array object.
...
How to find out what character key is pressed?
...tscape/Firefox/Opera
keynum = e.which;
}
alert(String.fromCharCode(keynum));
}
</script>
<form>
<input type="text" onkeypress="return myKeyPress(event)" />
</form>
JQuery:
$(document).keypress(function(event){
alert(String.fromCharC...
JavaScript click handler not working as expected inside a for loop [duplicate]
... (function (i) {
$("#div" + i).click(
function () { alert(i); }
);
})(i);
}
UPDATE
Updated DEMO
Or you can use 'let' instead var to declare i. let gives you fresh binding each time. It can only be used in ECMAScript 6 strict mode.
'use strict';
for(let i=1; ...
mfcs110ud.lib(dllmodul.obj) : error LNK2005: _DllMain@12 已经在 Xxx.ob...
...动生成一个DllMain入口函数，这时在dll源码中额外又添加了一个DllMain入口函数，就会出现重定义冲突。
原因分析：
_USRDLL定义有的话，MFC会自动生成一个DllMain入口函数，
这时在dll源码中额外又添加了一个DllMain入口函数，就会...
App Inventor 2 调用大模型API教程 - 阿里云百练等LLM集成 · App Inventor 2 中文网
...话、文本生成等功能。
已有文档：api_communication.md 介绍了Web组件基本用法。本文聚焦大模型API调用。
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how to use javascript Object.defineProperty
...count+= 20; // 70, setter is called
sneakers.discount+= 20; // 80, not 90!
alert(sneakers.discount); // getter is called
Note the last but one line: the responsibility for correct discount value was moved from the client code (e-shop definition) to the product definition. The product is responsibl...
ASP.NET MVC Ajax Error handling
...ecuted:
$.ajax({
url: '/foo',
success: function(result) {
alert('yeap');
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert('oops, something bad happened');
}
});
and to register a global error handler you could use the $.ajaxSetup() method:
$...