Javascript window.onload在IE中不起作用

Question

I wrote code that should clear form when user open page. It's working in FF but not in IE, any idea why?

window.onload = clearForm()

  function clearForm() 
 {  

("load event detected!");  

 };

Answer 1

This line:

window.onload = clearForm()

calls clearForm and then assigns its return value to window.onload , exactly like x = foo(); calls foo and assigns the result to x . Remove the parens:

window.onload = clearForm

---

Separately, I would strongly recommend not relying on the horror that is automatic semicolon insertion . Always supply all required semicolons:

window.onload = clearForm;

(Amusingly, you don't need the one at the end of your function clearForm() { ... } , because that's a function declaration, not a statement. It's harmless, though.)

Answer 2

Change window.onload = clearForm() to window.onload = clearForm; otherwise because of () you are assigning result of your function to window.onload