javascript

Introduction to the use of common functions in javascript


<html>
<head>
<title>javascript The use of ordinary functions in </title>

<script>
function show(){
document.write("show The function is called " + "<br/>");
return 10;
}

var hello = show();//The show() function is called, assigning the return value to the hello variable. If the function does not return a value, it returns undefined
document.write(hello + "<br/>");//10

var hello2 = show;//Show and hello2 point to the same function
document.write(hello2 + "<br/>");//Print out the body of the show function

hello2();//This is equivalent to calling the show () function

</script>

</head>
<body>

</body>
</html>