How to correctly output JS statements in PHP

A computer program is a series of "instructions" that are "executed" by the computer. In programming languages, these programming instructions are called statements. A JavaScript program is a series of programming statements. JavaScript statements are composed of: values, operators, expressions, keywords, and comments

1. Method:

echo "";

2. Example:

function getState(){      
    var cs = ".$state.";
    return cs;
} 
";
?>

3. JS garbled problem occurs:

header("Content-type:text/html;charset:utf-8")

Keep PHP encoding is consistent with the browser parsed page encoding .

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