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How to check if function exists in JavaScript?
...lder versions of IE treat certain functions as objects, e.g. typeof window.alert === 'object'.
– Noyo
Sep 4 '13 at 13:51
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For..In loops in JavaScript - key value pairs
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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...
jQuery how to bind onclick event to dynamically added HTML element [duplicate]
... do it would be to create the link for each element:
function handler() { alert('hello'); }
$('.add_to_this').append(function() {
return $('<a>Click here</a>').click(handler);
})
Another potential problem might be that the event observer is attached before the element has been added...
change cursor to finger pointer
...nquirer's link. consider the following html:
<a id=test_link onclick="alert('kinda neat);">Click ME!</a>
When a user mouse's over this link, the pointer will not change to a hand...instead, the pointer will behave like it's hovering over normal text. One might not want this...and so...
How to use getJSON, sending data with post method?
...tus + ", " + error;
console.log("Request Failed: " + err);
alert("Fehler!");
});
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Why use strict and warnings?
... @Jean if you are writing a simple script you really don't want to get alerted by warnings about file handler names or for not declaring the variable before using them :-)
– user2676847
Aug 17 '14 at 8:51
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JavaScript equivalent of PHP's in_array()
...on it:
var a = [['p','h'],['p','r'],'o'];
if(inArray(['p','h'], a)) {
alert('ph was found');
}
if(inArray(['f','i'], a)) {
alert('fi was found');
}
if(inArray('o', a)) {
alert('o was found');
}
// Results:
// alerts 'ph' was found
// alerts 'o' was found
Note that I intentionall...
How can I view array structure in JavaScript with alert()?
How can I view the structure of an array in JavaScript using alert() ?
11 Answers
11
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What is the use case of noop [:] in bash?
...n alias that doesn't take any argument. You can do it using ::
> alias alert_with_args='echo hello there'
> alias alert='echo hello there;:'
> alert_with_args blabla
hello there blabla
> alert blabla
hello there
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How to get first character of string?
...
What you want is charAt.
var x = 'some string';
alert(x.charAt(0)); // alerts 's'
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