Question

56

Creating a javascript alert with php that has a php variable inside?

rated 0 times [ 57] [ 1] / answers: 1 / hits: 84815 / 10 Years ago, mon, april 28, 2014, 12:00:00

I'm making a form that is supposed to create a javascript alert when some fields aren't filled out or filled out properly. I want to be able to take the error messages I've put in a php variable and display them in the javascript alert window.

The following code does not work:

function died($error) {

    echo '<script type=text/javascript> alert('.$error.')</script>';

    die();

}

How can I add the string contained in $error between the two script strings so it will output properly as a javascript alert?

Thank you!

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cullenmaxl

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2 Years ago

answered 10 Years ago emiliano · Accepted Answer

You only forgot quotations that are required for the JavaScript alert.

If you passed 'hello' to the function, your current code would create alert as:

alert(hello)

instead of doing:

alert(hello)

Therefore, change your line to the following (two double quotes are added before and after concatenating $error):

echo '<script type=text/javascript>alert('.$error.');</script>';

and you can use your function:

died('error on whatever');