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How to implement “select all” check box in HTML?

... Using jQuery: // Listen for click on toggle checkbox $('#select-all').click(function(event) { if(this.checked) { // Iterate each checkbox $(':checkbox').each(function() { this.checked = true; }); } else { ...
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jQuery select2 get value of select tag?

... $("#first").val(); // this will give you value of selected element. i.e. 1,2,3. share | improve this answer | follow | ...
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How to disable text selection using jQuery?

Does jQuery or jQuery-UI have any functionality to disable text selection for given document elements? 13 Answers ...
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Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc

I've heard that SELECT * is generally bad practice to use when writing SQL commands because it is more efficient to SELECT columns you specifically need. ...
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How to get error message when ifstream open fails

...:endl; } return 0; } Example output (Ubuntu w/clang): $ ./test /root/.profile failed to open /root/.profile: Permission denied (system:13) $ ./test missing.txt failed to open missing.txt: No such file or directory (system:2) $ ./test ./test opened ./test $ ./test $(printf '%0999x') failed...
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How can I generate an INSERT script for an existing SQL Server table that includes all stored rows?

...l need to run it at the database level. Right-click the database in SSMS, select "Tasks", "Generate Scripts...". As you work through, you'll get to a "Scripting Options" section. Click on "Advanced", and in the list that pops up, where it says "Types of data to script", you've got the option to s...
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Css height in percent not working [duplicate]

... the root parent have to be in pixels if you want to work freely with percents, <body style="margin: 0px; width: 1886px; height: 939px;"> <div id="containerA" class="containerA" style="height:65%;width:100%;"> &l...
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Why are Where and Select outperforming just Select?

... Select iterates once over the entire set and, for each item, performs a conditional branch (checking for validity) and a + operation. Where+Select creates an iterator that skips invalid elements (doesn't yield them), perform...
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Reset select2 value and show placeholder

How do I set the placeholder on value reset by select2. In my example If locations or grade select boxes are clicked and my select2 has a value than the value of select2 should reset and show the default placeholder. This script is resetting the value but won't show the placeholder ...
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Is there a way to make text unselectable on an HTML page? [duplicate]

...an HTML UI with some text elements, such as tab names, which look bad when selected. Unfortunately, it's very easy for a user to double-click a tab name, which selects it by default in many browsers. ...