steady.js | event without performance regressions in a @ media-query | Media library
kandi X-RAY | steady.js Summary
kandi X-RAY | steady.js Summary
A module to do some logic on the `onscroll` event without performance regressions in a @media-query like conditions.
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steady.js Key Features
steady.js Examples and Code Snippets
for i in range(len(Sadd)):
m.Minimize((Sadd['Load'].iloc[i]-PV[i]+6*X2[i])*TOU[i])
import pandas as pd
import numpy as np
from gekko import GEKKO
m = GEKKO(remote=False) # Initialize gekko
Sadd=pd.read_csv("Sa
from gekko import GEKKO
import numpy as np
import matplotlib.pyplot as plt
# Process model
Kp = 0.5 # process gain
tauP = 10.0 # process time constant
# pre-solve for steady state values
m = GEKKO()
O
from gekko import GEKKO
import numpy as np
import pandas as pd
n = 10
df1 = pd.DataFrame({'responsivness':np.random.rand(n),\
'affinity':np.random.rand(n),\
'cost':np.random.rand(n)})
print(df1.head
from gekko import GEKKO
m = GEKKO() # Initialize gekko
m.options.SOLVER=1 # APOPT is an MINLP solver
# optional solver settings with APOPT
m.solver_options = ['minlp_maximum_iterations 500', \
# minlp iterations with
from gekko import GEKKO
def f(x1,x2):
return (x1.value-3.3)**2 + (x2.value-5.7)**2
m = GEKKO() # Initialize gekko
m.options.SOLVER=1 # APOPT is an MINLP solver
x1 = m.Var(value=8,lb=1,ub=16,integer=True)
x2 = m.Var(value=8,lb=1,ub=16,
import numpy as np
import matplotlib.pyplot as plt
from scipy.integrate import odeint
from gekko import GEKKO
# Steady State Initial Condition
u2_ss=10.0
h_ss=50.0
x0 = np.empty(1)
x0[0]= h_ss
#%% GEKKO nonlinear MPC
m = GEKKO(remote=F
from gekko import GEKKO, chemical
import json
m = GEKKO(remote=False)
f = chemical.Flowsheet(m)
P = chemical.Properties(m)
# define compounds
c1 = P.compound('Butane')
c2 = P.compound('Propane')
# create feed streams
feed1 = f.stre
#include
Servo myservo;
int sensorPin = A0; // select the input pin for LDR
int sensorValue = 0; // variable to store the value coming from the sensor
int pos = 1;
int barState;
void setup() {
Serial.begin(9600); //sets serial port for
Community Discussions
Trending Discussions on steady.js
QUESTION
As we know, it's often advised to debounce scroll listeners so that UX is better when the user is scrolling.
However, I've often found libraries and articles where influential people like Paul Lewis recommend using requestAnimationFrame
. However as the web platform progress rapidly, it might be possible that some advice get deprecated over time.
The problem I see is there are very different use-cases for handling scroll events, like building a parallax website, or handling infinite scrolling and pagination.
I see 3 major tools that can make a difference in term of UX:
So, I'd like to know, per usecase (I only have 2 but you can come up with other ones), what kind of tool should I use right now to have a very good scroll experience?
To be more precise, my main question would be more related to infinite scrolling views and pagination (which generally do not have to trigger visual animations, but we want a good scrolling experience), is it better to replace requestAnimationFrame
with a combo of requestIdleCallback
+ passive scroll event handler ? I'm also wondering when it makes sense to use requestIdleCallback
for calling an API or handling the API response to let the scroll perform better, or is it something that the browser may already handle for us?
ANSWER
Answered 2019-Nov-03 at 17:37Although this question is a little bit older, I want to answer it because I often see scripts, where a lot of these techniques are misused.
In general all your asked tools (rAF
, rIC
and passive listeners) are great tools and won't vanish soon. But you have to know why to use them.
Before I start: In case you generate scroll synced/scroll linked effects like parallax effects/sticky elements, throttling using rIC
, setTimeout
doesn't make sense because you want to react immediately.
requestAnimationFrame
rAF
gives you the point inside the frame life cycle right before the browser wants to calculate the new style and layout of the document. This is why it is perfect to use for animations. First it won't be called more often or less often than the browser calculates layout (right frequency). Second it is called right before the browser does calculate the layout (right timing). In fact using rAF
for any layout changes (DOM or CSSOM changes) makes a lot of sense. rAF
is synced with the V-SYNC as any other layout rendering related stuff in the browser.
rAF
for throttle/debounce
The default example of Paul Lewis looks like this:
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