Python 列出所有組合

>>> list(itertools.combinations(range(1, 5), 2))
[(1, 2), (1, 3), (1, 4), (2, 3), (2, 4), (3, 4)]

event.returnValue is deprecated. Please use the standard event.preventDefault() instead.

if(event.preventDefault)
{
    event.preventDefault();
}
else
{
    event.returnValue = false;
}

Javascript fix barcode reader send ENTER+CRTL+J

add some code in line 37

if(event.preventDefault)
{
    event.preventDefault();
}
else
{
    event.returnValue = false;
}

References :
Disable ctrl + n and other ctrl + key combinations in JavaScript

Linux get keyboard press / release code

# showkey --keycodes

References : 

Extra Keyboard Keys - ArchWiki

Flask get all routing rules

for rule in app.url_map.iter_rules():
    options = {}
    for arg in rule.arguments:
        options[arg] = "[{0}]".format(arg)

    methods = ','.join(rule.methods)
    url = url_for(rule.endpoint, **options) 

    print rule.endpoint

    print methods

    print url

References :

python - get a list of all routes defined in the app - Stack Overflow

flask url path param

request.path             /page.html
request.script_root      /myapplication
request.base_url         http://www.example.com/myapplication/page.html
request.url              http://www.example.com/myapplication/page.html?x=y
request.url_root         http://www.example.com/myapplication/

request.referrer

request.args             GET params

References :

python - Flask request fields to get url path - Stack Overflow

Internet Explorer prevent jQuery Ajax cache

$.ajax({
  cache: false,
  //other options...
});

References : 

How to prevent a jQuery Ajax request from caching in Internet Explorer? - Stack Overflow