如何将PHP变量传递给Javascript函数

Question

I don't understand why the addRow method isn't reading the parameters and I know for a fact they are initialized.

In php
echo "<script> addRow(".$song.",".$artist."); </script>";

JavaScript method

function addRow(s,a){
        document.write("test");
    }

Answer 1

Don't forget your quotes!

echo "<script> addRow( '".$song."', '".$artist."' ); </script>";

Or nicer even:

echo "<script> addRow( '{$song}', '{$artist}' ); </script>";

Answer 2

PHP

<script> addRow('".$song."','".$artist."'); </script>

JavaScript

function addRow(s,a){
    console.log(s);
    console.log(a);
    document.write("test");
}