javascript - JS - pause play in setInterval -


im searching simple way make start stop buttons in setinterval function. when stop works, start doesnt...

var zman = 3000; function pls() {     settimeout(setinterval, zman); }  var myvar = setinterval(function() {             var sz;             sz = math.floor((math.random() * 750) + 1);             document.getelementbyid("fsize1").style.fontsize = sz+"%";             console.log(sz);             }, zman);

and

<button onclick="pls()">play</button> <button onclick="clearinterval(myvar)">stop</button>

whats wrong? , can make play button when want function run on first loading?

in pls() you're asking setinterval() called after 3 seconds. calling setinterval() no parameters nothing (although there should error in js console).

you want define function once, call both when clicked, , @ first run:

var zman = 3000,    myvar = null;    function pls() {    if (! myvar)      myvar = setinterval(sizer, zman);  }    function sizer() {    var sz = math.floor((math.random() * 750) + 1);    document.getelementbyid("fsize1").style.fontsize = sz + "%";    console.log(sz);  }    myvar = setinterval(sizer, zman);
<button onclick="pls()">play</button>  <button onclick="clearinterval(myvar); myvar = null;">stop</button>    <div id="fsize1">test<div>


Comments

Post a Comment

Popular posts from this blog

java - Spring Data JPA: Why findOne(id) executing delete query internally? -

i have 1 application using @manytomany annotation link 2 different entities 1 parent entity. not sure if have implemented properly. when execute .findone() on parent entity's repository find it, @ first fetch data along executing delete queries internally delete record mapping table (a table jpa creates after adding @manytomany annotation.). following generated sql queries , code snippet: java class @entity @table(name = "inventory") public class inventory { @id long id; // many other properties @manytomany(fetch=fetchtype.lazy) private list<stream> streams; @manytomany(fetch=fetchtype.lazy) private list<subject> subjects; } there no other annotation i've put in stream , subject entity class link inventory class. when run app, create following tables: inventory stream subject inventory_stream inventory_subject (inventory_stream , inventory_subject, 2 tables created automatically, don't k...
Read more

python - Mongodb How to add addtional information when aggregating? -

i beginner , wrote line pipeline works, wanna add other information output, screen name , or number of tweets.i tried add under $group gave me syntax error everytime here pipeline: def make_pipeline(): # complete aggregation pipeline pipeline = [ { '$match': { "user.statuses_count": {"$gt":99 }, "user.time_zone": "brasilia" } }, { "$group": { "_id": "$user.id", "followers": { "$max": "$user.followers_count" } } }, { "$sort": { "followers": -1 } }, { "$limit" : 1 } ]; i using on example : { "_id" : objectid("5304e2e3cc9e684aa98bef97"), "text" : "first week of school on :p", "in_reply_to_status_id" : null, "retweet_count" : null, ...
Read more

java - Incorrect order of records in M-M relationship in hibernate -

Image
i have 4 records in bridge table in mysql database. using @manytomany in hibernate, accurate order of employees incorrect incorrect of projects. following required material figure out doing mistake. this source. @entity @table(name="project") public class projectbean { @id @generatedvalue @column(name="project_id") private int projectid; @column(name="title") private string projecttitle; @manytomany(mappedby="projects") private collection<employeebean> employees; public projectbean() { employees = new arraylist<employeebean>(); } //getters & setters } @entity @table(name="employee") public class employeebean { @id @generatedvalue @column(name="employee_id") private int employee_id; @column(name="first_name") private string ...
Read more