Created
May 26, 2012 08:29
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onload, readyState, and DOMContentLoaded
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script> | |
| window.onload = function () { | |
| console.log(''+(+new Date)+': Onload fired'); | |
| }; | |
| document.onreadystatechange = function () { | |
| console.log(''+(+new Date)+': Ready state changed'); | |
| if (document.readyState == "complete") { | |
| console.log(''+(+new Date)+': Ready = Complete'); | |
| } | |
| }; | |
| window.addEventListener("DOMContentLoaded", function () { | |
| console.log(''+(+new Date)+': DOM Content Loaded'); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <h1>Test</h1> | |
| <p>To see the difference between <code>onload</code> and <code>readyState == "complete"</code> | |
| and <code>DOMContentLoaded</code>.</p> | |
| <p>Run me with Firebug or Chrome Dev Tools, and cache disabled, and watch the console.</p> | |
| <hr /> | |
| <img src="http://i.imgur.com/owuVS.gif" /> | |
| <img src="http://i.imgur.com/1sE1n.jpg" /> | |
| <img src="http://i.imgur.com/A2s1e.jpg" /> | |
| <img src="http://i.imgur.com/BaFin.jpg" /> | |
| </body> | |
| </html> |
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Performance.now() would be more useful than new Date, and its more accurate