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How to get image size (height & width) using JavaScript?
...ing Javascript...
const img = new Image();
img.onload = function() {
alert(this.width + 'x' + this.height);
}
img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif';
This can be useful if the image is not a part of the markup.
...
What is a practical use for a closure in JavaScript?
... like:
a = (function () {
var privatefunction = function () {
alert('hello');
}
return {
publicfunction : function () {
privatefunction();
}
}
})();
As you can see there, a is now an object, with a method publicfunction ( a.publicfunction() ) w...
Are there constants in JavaScript?
...turn {
get: function(name) { return private[name]; }
};
})();
alert('MY_CONST: ' + CONFIG.get('MY_CONST')); // 1
CONFIG.MY_CONST = '2';
alert('MY_CONST: ' + CONFIG.get('MY_CONST')); // 1
CONFIG.private.MY_CONST = '2'; // error
alert('MY_CONST: ' + CONFIG.get('MY_CONS...
Set timeout for ajax (jQuery)
...ething
}).catch(function(e) {
if(e.statusText == 'timeout')
{
alert('Native Promise: Failed from timeout');
//do something. Try again perhaps?
}
});
jQuery 1.8+
$.ajax({
url: '/getData',
timeout:3000 //3 second timeout
}).done(function(){
//do something
}).fail(fun...
Getting JavaScript object key list
... key4: 'value4'
};
var keys = [];
for (var k in obj) keys.push(k);
alert("total " + keys.length + " keys: " + keys);
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How to get client's IP address using JavaScript?
...freegeoip.net/json/?callback=?', function(data) { if (!data || !data.ip) alert('IP not found'); }).fail(function() { alert('$.getJSON() request failed'); });
– thdoan
Nov 24 '16 at 9:52
...
How to trigger a click on a link using jQuery
...er element within the tag to click on.
<a id="test1" href="javascript:alert('test1')">TEST1</a>
<a id="test2" href="javascript:alert('test2')"><span>TEST2</span></a>
Jquery:
$('#test1').trigger('click'); // Nothing
$('#test2').find('span').trigger('click'); /...
How to access component methods from “outside” in ReactJS?
...an :D
class Parent extends Component {
handleClick() {
if (this._getAlert !== null) {
this._getAlert()
}
}
render() {
return (
<div>
<Child>
{(getAlert, childScope) => (
<span> {!this._getAlert ? this._getAlert = getAlert...
Is it possible to make anonymous inner classes in Java static?
...
@MichaelMyers I have tryed to simulate the FindBugs alerting me of doing an Anonymous Inner without using the 'this' reference, and nothing happens. Can you demonstrate how FindBugs alert you as you said in the begining of your answer? Just paste some link or what ever.
...
clear javascript console in Google Chrome
...his is what I came up with, just in case I won't remember to assign window.alert: var hasClear = (typeof clear == 'function'); if(hasClear) clear(); console.info('bla'); if(!hasClear) console.log(Array(18).join('\n'));
– Ronny
Sep 6 '12 at 14:15
...