debouncing

How to implement debounce in Vue2?

六眼飞鱼酱① 提交于 2019-11-27 10:38:22
I have a simple input box in a Vue template and I would like to use debounce more or less like this: <input type="text" v-model="filterKey" debounce="500"> However the debounce property has been deprecated in Vue 2 . The recommendation only says: "use v-on:input + 3rd party debounce function". How do you correctly implement it? I've tried to implement it using lodash , v-on:input and v-model , but I am wondering if it is possible to do without the extra variable. In template: <input type="text" v-on:input="debounceInput" v-model="searchInput"> In script: data: function () { return {

How to find zero crossings with hysteresis?

可紊 提交于 2019-11-27 01:57:00
问题 In numpy, I would like to detect the points at which the signal crosses from (having been previously) below a certain threshold, to being above a certain other threshold. This is for things like debouncing, or accurate zero crossings in the presence of noise, etc. Like this: import numpy # set up little test problem N = 1000 values = numpy.sin(numpy.linspace(0, 20, N)) values += 0.4 * numpy.random.random(N) - 0.2 v_high = 0.3 v_low = -0.3 # find transitions from below v_low to above v_high

C# event debounce

99封情书 提交于 2019-11-27 00:36:13
问题 I'm listening to a hardware event message, but I need to debounce it to avoid too many queries. This is an hardware event that sends the machine status and I have to store it in a database for statistical purposes, and it sometimes happens that its status changes very often (flickering?). In this case I would like to store only a "stable" status and I want to implement it by simply waiting for 1-2s before storing the status to the database. This is my code: private MachineClass connect() {

Debounce function in jQuery

陌路散爱 提交于 2019-11-26 16:53:28
问题 I'm attempting to debounce a button's input using the jquery debouncing library by Ben Alman. http://benalman.com/code/projects/jquery-throttle-debounce/examples/debounce/ Currently this is the code that I have. function foo() { console.log("It works!") }; $(".my-btn").click(function() { $.debounce(250, foo); }); The problem is that when I click the button, the function never executes. I'm not sure if I've misunderstood something but as far as I can tell, my code matches the example. 回答1: I

How to add debounce time to an async validator in angular 2?

前提是你 提交于 2019-11-26 16:05:37
This is my Async Validator it doesn't have a debounce time, how can I add it? static emailExist(_signupService:SignupService) { return (control:Control) => { return new Promise((resolve, reject) => { _signupService.checkEmail(control.value) .subscribe( data => { if (data.response.available == true) { resolve(null); } else { resolve({emailExist: true}); } }, err => { resolve({emailExist: true}); }) }) } } It is actually pretty simple to achieve this (it is not for your case but it is general example) private emailTimeout; emailAvailability(control: Control) { clearTimeout(this.emailTimeout);

How to implement debounce in Vue2?

懵懂的女人 提交于 2019-11-26 10:17:37
问题 I have a simple input box in a Vue template and I would like to use debounce more or less like this: <input type=\"text\" v-model=\"filterKey\" debounce=\"500\"> However the debounce property has been deprecated in Vue 2. The recommendation only says: \"use v-on:input + 3rd party debounce function\". How do you correctly implement it? I\'ve tried to implement it using lodash , v-on:input and v-model , but I am wondering if it is possible to do without the extra variable. In template: <input

How to add debounce time to an async validator in angular 2?

大兔子大兔子 提交于 2019-11-26 05:58:22
问题 This is my Async Validator it doesn\'t have a debounce time, how can I add it? static emailExist(_signupService:SignupService) { return (control:Control) => { return new Promise((resolve, reject) => { _signupService.checkEmail(control.value) .subscribe( data => { if (data.response.available == true) { resolve(null); } else { resolve({emailExist: true}); } }, err => { resolve({emailExist: true}); }) }) } } 回答1: It is actually pretty simple to achieve this (it is not for your case but it is

How to trigger an event in input text after I stop typing/writing?

懵懂的女人 提交于 2019-11-26 04:34:19
问题 I want to trigger an event just after I stop typing (not while typing) characters in my input textbox. I\'ve tried with: $(\'input#username\').keypress(function() { var _this = $(this); // copy of this object for further usage setTimeout(function() { $.post(\'/ajax/fetch\', { type: \'username\', value: _this.val() }, function(data) { if(!data.success) { // continue working } else { // throw an error } }, \'json\'); }, 3000); }); But this example produces a timeout for every typed character

Can someone explain the “debounce” function in Javascript

可紊 提交于 2019-11-25 22:36:47
问题 I am interested in the \"debouncing\" function in javascript, written here : http://davidwalsh.name/javascript-debounce-function Unfortunately the code is not explained clearly enough for me to understand. Can anyone help me figure out how it works (I left my comments below). In short I just really do not understand how this works // Returns a function, that, as long as it continues to be invoked, will not // be triggered. The function will be called after it stops being called for // N