Skip to main content

Pass parameters in setInterval function


How to pass parameter while call a function using setInterval. viz. setInterval('funca(10,3)',500); is incorrect.



Source: Tips4allCCNA FINAL EXAM

Comments

  1. You need to create an anonymous function so the actual function isn't executed right away.

    setInterval( function() { funca(10,3); }, 500 );

    ReplyDelete
  2. You can use an anonymous function;

    setInterval(function() { funca(10,3); },500);

    ReplyDelete
  3. Quoting the arguments should be enough:

    OK --> reloadIntervalID = window.setInterval( "reloadSeries('"+param2Pass+"')" , 5000)

    KO --> reloadIntervalID = window.setInterval( "reloadSeries( "+param2Pass+" )" , 5000)


    Note the single quote ' for each argument.

    Tested with IE8, Chrome and FireFox

    ReplyDelete
  4. You can pass the parameter(s) as property of the function object, not as a parameter:

    var f = this.someFunction; //use 'this' if called from class
    f.parameter1 = obj;
    f.parameter2 = this;
    f.parameter3 = whatever;
    setInterval(f, 1000);


    Then in your function someFunction, you will have access to the parameters. This is particularly useful inside classes where the scope goes to the global space automatically and you lose references to the class that called setInterval. With this approach "parameter2" in "someFunction", in the example above, will have the right scope.

    ReplyDelete
  5. This is not exactly the same parameters as I read here:
    http://www.w3schools.com/jsref/met_win_setinterval.asp

    I'm a bit confused ...

    ReplyDelete
  6. This works setInterval("foo(bar)",int,lang); Jon Kleiser lead me to the answer.

    ReplyDelete
  7. Add them as parameters to setInterval:

    setInterval(funca,500,10,3);

    ReplyDelete

Post a Comment

Popular posts from this blog

[韓日関係] 首相含む大幅な内閣改造の可能性…早ければ来月10日ごろ=韓国

div not scrolling properly with slimScroll plugin

I am using the slimScroll plugin for jQuery by Piotr Rochala Which is a great plugin for nice scrollbars on most browsers but I am stuck because I am using it for a chat box and whenever the user appends new text to the boxit does scroll using the .scrollTop() method however the plugin's scrollbar doesnt scroll with it and when the user wants to look though the chat history it will start scrolling from near the top. I have made a quick demo of my situation http://jsfiddle.net/DY9CT/2/ Does anyone know how to solve this problem?

Why does this javascript based printing cause Safari to refresh the page?

The page I am working on has a javascript function executed to print parts of the page. For some reason, printing in Safari, causes the window to somehow update. I say somehow, because it does not really refresh as in reload the page, but rather it starts the "rendering" of the page from start, i.e. scroll to top, flash animations start from 0, and so forth. The effect is reproduced by this fiddle: http://jsfiddle.net/fYmnB/ Clicking the print button and finishing or cancelling a print in Safari causes the screen to "go white" for a sec, which in my real website manifests itself as something "like" a reload. While running print button with, let's say, Firefox, just opens and closes the print dialogue without affecting the fiddle page in any way. Is there something with my way of calling the browsers print method that causes this, or how can it be explained - and preferably, avoided? P.S.: On my real site the same occurs with Chrome. In the ex