javascript Archives - Page 304 of 308

What is the !! (not not) operator in JavaScript?

I saw some code that seems to use an operator I don’t recognize, in the form of two exclamation points, like so: !!. ...

April 9, 2022
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How do I test for an empty JavaScript object?

This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. ...

April 9, 2022
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How do I copy to the clipboard in JavaScript?

What is the best way to copy text to the clipboard (multi-browser)? I have tried: function copyToClipboard(text) { if (window.clipboardData) { // Internet ...

April 9, 2022
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Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?

The following are two methods of building a link that has the sole purpose of running JavaScript code. Which is better, in terms ...

April 9, 2022
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Why does Google prepend while(1); to their JSON responses?

Why does Google prepend while(1); to their (private) JSON responses? For example, here’s a response while turning a calendar on and off in ...

April 9, 2022
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Setting “checked” for a checkbox with jQuery

I’d like to do something like this to tick a checkbox using jQuery: $(".myCheckBox").checked(true); or $(".myCheckBox").selected(true); Does such a thing exist? 4 43

April 9, 2022
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How do you get a timestamp in JavaScript?

Something similar to Unix’s timestamp, that is a single number that represents the current time and date. Either as a number or a ...

April 9, 2022
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“Thinking in AngularJS” if I have a jQuery background? [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Closed 6 years ago. Locked. This question and its ...

April 9, 2022
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How do I make the first letter of a string uppercase in JavaScript?

How do I make the first letter of a string uppercase, but not change the case of any of the other letters? For ...

April 9, 2022
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How do I check if an array includes a value in JavaScript?

What is the most concise and efficient way to find out if a JavaScript array contains a value? This is the only way ...

April 9, 2022
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