machinecat520
/
zj-Exercise


			
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<head>
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    <title>Document</title>
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<body>
    <!-- 
        问题：在js调用函数时传递变量参数时，是值传递还是引用传递(传递的是值)
            *理解1：都是值（基本值/地址值）传递
            *理解2：可能是值传递，也可能是引用传递（地址值）
     -->
     <script>

         var a = 3;
         function fn(a){
            a = a + 1;
         };
         fn(a);
         console.log(a); //3

         function fn2(obj){
            console.log(obj.name);
         };
         var obj = {name:'大师兄'};
         fn2(obj);


     </script>
</body>
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