当PHP回应时，Onclick确认（）无效

Question

I'm trying to use a javacript confirm() box via the PHP echo below and it's not working.

echo '<a href="http://sdfsdfs.com?keepThis=true&TB_iframe=true&height=10&width=1200&x=2342342&enter_other_room=2" class="box" TARGET="_self" oncontextmenu="return false;" onclick="confirm(\"Are you sure you want to enter the users\'s Room?\");\">User\'s Room</a>';

What am I missing here?

Answer 1

You can't escape quotes inside HTML attributes, so onclick="confirm(\"...\");" won't work. Put single quotes around the string. And since it's inside a PHP single-quoted string, you need to escape them for PHP.

And since the string contains an apostrophe inside it, you need to escape that for Javascript. You have to double the backslashes to get a literal backslash into the PHP string. And a third backslash to escape it for PHP.

echo '<a href="http://sdfsdfs.com?keepThis=true&TB_iframe=true&height=10&width=1200&x=2342342&enter_other_room=2" class="box" TARGET="_self" oncontextmenu="return false;" onclick="confirm(\'Are you sure you want to enter the users\\\'s Room?\');\">User\'s Room</a>';