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函数练习题!

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zydchina818

#1 Created at ... [Delete] [Delete and Lock User]


if (arguments.length === 1) {
       return (3.14*r*r);
   } else {
       return (pi * r * r);
   }


第二题:

‘use strict'
function max(a, b) {
  if (a > b) {
     return a;
} else {
     return b;
}
}
max(15, 20);

张,

#2 Created at ... [Delete] [Delete and Lock User]

if (pi===undefined)

{var pi=3.14}

var s =r*r*pi;

return s;


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