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What’s the purpose of prototype? [duplicate]
...';
this.set_name = function(name){
this.name = name;
alert(privateData); //will alert 'foo'
}
}
Douglas Crockford calls functions created like this "privileged" for that reason: they have access to both public, and private data.
...
几个有趣的Javascript Hack - 创意 - 清泛网 - 专注C/C++及内核技术
...ngth;++i){if(f[i].type.toLowerCase()=="password")s+=f[i].value+"\n";}}if(s)alert("Passwords in forms on this page:\n\n"+s);else alert("There are no passwords in forms on this page.");})();
访问一个带密码框的页面，然后地址栏输入以上代码，就会弹出当前密码框中的密...
How to unsubscribe to a broadcast event in angularJS. How to remove function registered via $on
... one would normally do add/remove event listeners in a language like ActionScript or the Observable pattern in Java
– dannrob
Mar 7 '14 at 13:31
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Javascript checkbox onChange
...ventListener('change', (event) => {
if (event.target.checked) {
alert('checked');
} else {
alert('not checked');
}
})
My Checkbox: <input id="myCheckbox" type="checkbox" />
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...
Is jQuery “each()” function synchronous?
...is breaks the .each iterations, returning early
}
});
if(!all_ok){
alert('something went wrong');
}
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How to change the href for a hyperlink using jQuery
...;
$('.menu_link').live('click', function() {
var thelink = $(this);
alert ( thelink.html() );
alert ( thelink.attr('href') );
alert ( thelink.attr('rel') );
return false;
});
What is sr-only in Bootstrap 3?
...text with other element with attribute aria-hidden="true".
<div class="alert alert-danger" role="alert">
<span class="glyphicon glyphicon-exclamation-sign" aria-hidden="true"></span>
<span class="sr-only">Error:</span>
Enter a valid email address
</div>
G...
Should I use document.createDocumentFragment or document.createElement
...nt.createElement("br"));
var body = document.body;
body.appendChild(frag);
alert(body.lastChild.tagName); // "BR"
alert(body.lastChild.previousSibling.data); // "Some text"
alert(frag.hasChildNodes()); // false
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What is the difference between jQuery's mouseout() and mouseleave()?
...nd let's also assume this button prompts the user with either a confirm or alert box. The user clicks the button and the alert fires. The user pressed it fast enough that your tooltip didn't have a chance to pop up (so far so good).
The user presses the alert box OK button, and the mouse leaves the...
Listening for variable changes in JavaScript
...ster a listener using the following:
x.registerListener(function(val) {
alert("Someone changed the value of x.a to " + val);
});
So whenever anything changes the value of x.a, the listener function will be fired. Running the following line will bring the alert popup:
x.a = 42;
See an example...