<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>037</title>
</head>
<body>
</body>
<script type="text/javascript">
(function () {
function makeString (ldelim, str, rdelim) {
return ldelim + str + rdelim;
}
function quoteString (str) {
return makeString("'",str,"'");
}
function barString (str) {
return makeString("-",str,"-");
}
function namedEntity(str){
return makeString("#", str, ";");
}
console.log(quoteString("apple"));
console.log(barString("apple"));
console.log(namedEntity(169));
})();
(function () {
function makeString (ldelim, rdelim, str) {
return ldelim + str + rdelim;
}
function partial (fn) {
var args = [].slice.call(arguments, 1);
console.log(args);
// this的理解很重要
return function(){
return fn.apply(this, args.concat([].slice.call(arguments)));
};
}
function add(a,b){
return a + b;
}
var add100 = partial(add, 100);
console.log(add100(14));
var nameEntity = partial(makeString, "&#", ";");
console.log(nameEntity(169));
var named = makeString.bind(undefined, "&#", ";");
console.log(named(169));
})();
</script>
</html>
