Solve JS window.onload event with the page more load problem

Window.onload usage is as follows:

The code is as follows	Copy Code
function func () {alert ("This is window onload event!"); return;} Window.onload=func; Or as follows: Window.onload=function () {alert ("This is window onload event!"); return;}

However, window.onload cannot load multiple functions at the same time.

Like what:

The code is as follows	Copy Code
function T () { Alert ("T") } Function B () { Alert ("B") } Window.onload =t; Window.onload =b;

The previous overlay will be followed, and the above code will only output B.

There are three ways to solve this problem

1. Write the event you want to bind, and then assign the onload

The code is as follows	Copy Code
Window.onload=function () {function1 (); function2 ();}

2, through the custom addloadevent to solve

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function Addloadevent (func) { var oldonload=window.onload; if (typeof window.onload!= ' function ') { Window.onload=func; }else{ Window.onload=function () { Oldonload (); Func (); } } } To add an event to load execution: Addloadevent (FUNC1); Addloadevent (FUNC2);

3, if you want to give an event in your program to assign a number of processes, as long as the first judge the browser, and then according to different browsers, choose to use Attachevent or addeventlistener on it. Examples are as follows

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if (document.all) { Window.attachevent (' onload ', func1); Window.attachevent (' onload ', FUNC2); } else { Window.addeventlistener (' Load ', func1, false); Window.addeventlistener (' Load ', FUNC2, false); }

4. Custom function Multiple calls

code is as follows	copy code
<script Type= "Text/javascript" Function func1 () {...} Function Func2 () {...} Function func3 () {...} Function Addloadevent (func) { var oldonload=window.onload; if (typeof window.onload!= "function") {  window.onload=func;  } else{  window.onload=function () { Oldonload (); func (); }  }  }  addloadevent (FUNC1);  addloadevent (FUNC2);  addloadevent (FUNC3); </script>