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How can I get query string values in JavaScript?
...de: "front",
sid: "de8d49b78a85a322c4155015fdce22c4",
empty: ""
}
alert(urlParams["mode"]);
// -> "front"
alert("empty" in urlParams);
// -> true
This could easily be improved upon to handle array-style query strings too. An example of this is here, but since array-style parameter...
Get checkbox value in jQuery
....is(':checked') (thanks @mgsloan)
$('#test').click(function() {
alert("Checkbox state (method 1) = " + $('#test').prop('checked'));
alert("Checkbox state (method 2) = " + $('#test').is(':checked'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min....
Is it possible to get the non-enumerable inherited property names of an object?
... {
props.push(name);
}
}
return props;
};
alert(instance.getInherited().join(","));
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Form onSubmit determine which submit button was pressed [duplicate]
...ors[0];
}
console.log(submitActor.name);
// alert(submitActor.name);
return false;
});
$submitActors.click(function(event) {
submitActor = this;
});
});
</script>
</head>
<body>
<form id="test">
...
jQuery trigger file input
...cument).ready(function() {
$('#myfile').change(function(evt) {
alert($(this).val());
});
});
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What is JSON and why would I use it?
...f the properties
//from the above code snippet (the json example)
alert(johnny.firstName + ' ' + johnny.lastName); //Will alert 'John Smith'
};
The JSON parser also offers another very useful method, stringify. This method accepts a JavaScript object as a parameter, and outputs back a st...
pass post data with window.location.href
...pen you DevTools -> application -> IndexDB and take a peak. [spoiler alert: it's encrypted].
Focusing on Local and Session Storage; these are both dead simple to use:
// To Set
sessionStorage.setItem( 'key' , 'value' );
// e.g.
sessionStorage.setItem( 'formData' , { name: "Mr Manager", com...
How to check null objects in jQuery
...e will look something like this -
if ($("#btext" + i).length){
//alert($("#btext" + i).text());
$("#btext" + i).text("Branch " + i);
}
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Pass parameters in setInterval function
...the "spread" operator
function repeater(param1, param2, param3){
alert(param1);
alert(param2);
alert(param3);
}
let input = [1,2,3];
setInterval(repeater,3000,...input);
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How to reset radiobuttons in jQuery so that none is checked
...nd not "false" since "false" is not a falsy value. i.e.
if ("false") {
alert("Truthy value. You will see an alert");
}
Note 2: As of jQuery 1.6.0, there are now two similar methods, .attr and .prop that do two related but slightly different things. If in this particular case, the advice provide...