Question

I have a class named validate[‘required’] and I need to put it inside

onclick="something();document.getElementById('something').setAttribute('class',here);"

the problem is that I get a syntax error : missing ) after argument list.

Answer 1

As per your comments I guess you are doing:

onclick="something();document.getElementById('something').setAttribute('class','vaildate['required']');"

The string between onclick="..." is parsed by the JavaScript interpreter of the browser.

Of the JavaScript code, this fails:

'vaildate['required']'

because the JavaScript interpreter will think everything between ' and ' will be your class name, so in your case:

vaildate[

Then the interpreter also reads required']' which it does not know how to handle, thus producing an error.

To literally use the ' character without the browser using it as the end, you can escape it by prepending \:

'vaildate[\'required\']'