Using setTimeout() in jquery

Question

I'm not new to Javascript but then I realize I don't know how to use setTimeout().

I have tried this:

$(document).ready(function(){

  setTimeout('changeit()',1000); // I have also tried setTimeout('changeit',1000);
  // var t = setTimeout('changeit()',1000); <--- tried also something like this.

  // changeit(); <-- works when i do this.

  function changeit(){
    $('#hello').html('Hello World - this was inserted using jQuery');
    // #hello is <p id="hello">Hello World</p>
  }
})

Can anyone help me with this one?

icktoofay · Accepted Answer · 2010-02-07 03:39:26Z

4

Pass a reference to the changeit function instead of a string of JavaScript code.

$(document).ready(function() {
    setTimeout(changeit, 1000);
    function changeit() {
        $("#hello").html("Hello world - this was inserted using jQuery.");
    }
});

answered Feb 7, 2010 at 3:39

icktoofay

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Comments

Matchu · Accepted Answer · 2010-02-07 03:39:53Z

1

How about:

setTimeout(changeit, 1000);

answered Feb 7, 2010 at 3:39

Matchu

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Comments

cletus · Accepted Answer · 2010-02-07 03:59:17Z

Do this:

$(function() {
  setTimeout(changeit, 1000);
});

function changeit() {
  $('#hello').html('Hello World - this was inserted using jQuery');
}

or this:

$(function() {
  setTimeout(changeit, 1000);
  function changeit() {
    $('#hello').html('Hello World - this was inserted using jQuery');
  }
});

The problem with your version is that you're passing a string to setTimeout() which is eval'ed but by that time changeit() is out of scope so it won't work.

The alternative is to make changeit global (as per the first code snippet).

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