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calling onload function multiple times without overriding the previously called function
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| <!DOCTYPE html> | |
| <html lang="es"> | |
| <head> | |
| <title>Window On Load</title> | |
| </head> | |
| <body> | |
| <h1>Window on load</h1> | |
| </body> | |
| <script type="text/javascript" charset="utf-8"> | |
| var helloWorld = function (){ | |
| console.log("Hello world"); | |
| }; | |
| var helloAnkit = function () { | |
| console.log('hello Ankit'); | |
| }; | |
| var greet = function(message){ | |
| return function(){ | |
| console.log(message); | |
| } | |
| }; | |
| var onLoadFunction = function(fun) { | |
| var previousFunction = window.onload; | |
| if (typeof window.onload != 'function') { | |
| window.onload = fun; | |
| } else { | |
| window.onload = function() { | |
| if (previousFunction) { | |
| previousFunction(); | |
| } | |
| fun(); | |
| } | |
| } | |
| }; | |
| onLoadFunction(helloWorld); | |
| onLoadFunction(greet('hey there')); | |
| onLoadFunction(helloAnkit); | |
| </script> | |
| </html> |
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