如何在PHP代码中调用jquery函数 - $未定义

Question

I want to use jQuery-confirm dialog instead of echoing a Javascript alert from PHP. When I run following code it shows me this error:

$ is not defined

echo "<script>$.alert({title: 'Alert!',content: 'Simple alert!',});</script>";

Answer 1

Be sure to include the jQuery library first.

Then, if it still do not work, like you say in comments, try wrapping your alert inside a $(document).ready():

echo "<script>$(document).ready(function(){$.alert({title: 'Alert!',content: 'Simple alert!'});});</script>";