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How to remove spaces from a string using JavaScript?
...put.replace(/\s/g, '');
//make string lower
input = input.toLowerCase();
alert(input);
Click here for working example
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How to create multidimensional array
...ength] = parseInt(els[0][i].value) - parseInt(els[1][i].value);
}
alert(result.join(' '));
}
http://jsfiddle.net/z4Un3/8/
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How can I determine if a JavaScript variable is defined in a page? [duplicate]
...tor can evaluate even an undeclared identifier without throwing an error.
alert (typeof sdgfsdgsd);
Will show "undefined," where something like
alert (sdgfsdgsd);
will throw a ReferenceError.
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jQuery post() with serialize and extra data
...oes. I'm not sure what you are trying to show with your demo. You are just alerting the length of the array. If my demo doesn't convince you, please have a look at the documentation.
– Felix Kling
Nov 19 '14 at 18:56
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How to append output to the end of a text file
...identally type command > file_to_append_to to an existing file, it will alert you that the file exists already. Sample error message: file exists: testFile.txt
Thus, when you use > it will only allow you to create a new file, not overwrite an existing file.
...
Get div height with plain JavaScript
...
jsFiddle
var element = document.getElementById('element');
alert(element.offsetHeight);
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How to get the element clicked (for the whole document)?
...following function to get the ID
<script>
function theFunction(e)
{ alert(e.target.id);}
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google chrome extension :: console.log() from background page?
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@MohamedMansour, this solution does not work for me. If I alert() chrome.extension.getBackgroundPage(), I get null. Do I need to have permissions set or some other configuration?
– gwg
Oct 22 '14 at 22:33
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What's the difference between String(value) vs value.toString()
...ethod unavailable:
o.valueOf = null;
try {
String(o);
} catch (e) {
alert(e); // TypeError
}
If you want to know more about this mechanism I would recommend looking at the ToPrimitive and the ToString internal operations.
I also recommend reading this article:
Object-to-Primitive Convers...
Check if all checkboxes are selected
...checkbox'].abc");
if(a.length == a.filter(":checked").length){
alert('all checked');
}
});
All this will do is verify that the total number of .abc checkboxes matches the total number of .abc:checked.
Code example on jsfiddle.
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