Uncaught SyntaxError: Unexpected token ) when using void()
I get this error and I've managed to narrow it down to:
<a href="javascript:void();" onclick="myFunction();">aaa</a>
That line of code is now the only thing in my source code and still I get the error in title. Any idea why so?
Even when surrounded with the appropriate HTML elements (html, head, body etc) I am still thrown the error. The error shows up in Chrome dev console and via alert if I include a
window.onerror
function in the head tag. It also occurs when the myFunction() method actually exists. As far as I can gather, there is absolutely nothing wrong with that above statement whatsoever.
Answers:
Use
<a href="javascript:void(0);" onclick="myFunction();">aaa</a>
void expects a parameter.
There's an interesting discussion on using void(0) or other techniques here.
Is because void takes one argument. You want:
<a href="javascript:void(0);" onclick="myFunction();">aaa</a>
void is an operator, not a function. It requires a single expression as its operand. () is not a valid expression. The correct syntax is:
<a href="javascript:void 0;" onclick="myFunction();">aaa</a>
You can put parentheses around 0, but they're not necessary, just as you don't need parentheses around 0 when writing 3 + 0.