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Check if string begins with something? [duplicate]
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Use stringObject.substring
if (pathname.substring(0, 6) == "/sub/1") {
// ...
}
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How do I get the width and height of a HTML5 canvas?
... and height attributes are not present in the canvas element, the default 300x150 size will be returned. To dynamically get the correct width and height use the following code:
const canvasW = canvas.getBoundingClientRect().width;
const canvasH = canvas.getBoundingClientRect().height;
Or using th...
HTML 5 Favicon - Support?
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The above covers IE up to IE 9. IE 11 accepts PNG favicons, however, IE 10 does not. Also IE 10 does not read conditional comments thus IE 10 won't show a favicon. With IE 11 and Edge available I don't see IE 10 in widespread use, so I ignore this browser.
For the rest of the browsers we are goin...
How can I get query string values in JavaScript?
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Update: Sep-2018
You can use URLSearchParams which is simple and has decent (but not complete) browser support.
const urlParams = new URLSearchParams(window.location.search);
const myParam = urlParams.get('myParam');
PS
Unfortunately URL...
Check if a string has white space
...e input string:
function hasWhiteSpace(s) {
return s.indexOf(' ') >= 0;
}
Or you can use the test method, on a simple RegEx:
function hasWhiteSpace(s) {
return /\s/g.test(s);
}
This will also check for other white space characters like Tab.
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Preferred method to store PHP arrays (json_encode vs serialize)
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20 Answers
20
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How to display long messages in logcat
... to display long message on logcat. If the length of message is more than 1000 characters, it gets broken.
10 Answers
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Read only the first line of a file?
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360
Use the .readline() method (Python 2 docs, Python 3 docs):
with open('myfile.txt') as f:
fi...
How to read the output from git diff?
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Lets take a look at example advanced diff from git history (in commit 1088261f in git.git repository):
diff --git a/builtin-http-fetch.c b/http-fetch.c
similarity index 95%
rename from builtin-http-fetch.c
rename to http-fetch.c
index f3e63d7..e8f44ba 100644
--- a/builtin-http-fetch.c
+++ b/htt...
HTML Input=“file” Accept Attribute File Type (CSV)
...v), use:
<input type="file" accept=".csv" />
For Excel Files 97-2003 (.xls), use:
<input type="file" accept="application/vnd.ms-excel" />
For Excel Files 2007+ (.xlsx), use:
<input type="file" accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
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