JS 定义用字符串拼接的变量的解析

var name = "test"

window.name = 200

alert(name); // 200

alert(test);  ReferenceError: test is not defined

var test = {};

  for(var i = 0; i < 3; i++){

    test['test_'+i]='我是字符串'+i;

    console.log(test['test_'+i]); //输出:我是字符串0, 我是字符串1, 我是字符串2

  }

console.log(test_0); //输出:ReferenceError: test_0 is not defined

console.log(test['test_0']); //输出:我是字符串0

var test = [];

  for(var i = 0; i < 3; i++){

    test[i]='我是字符串'+i;

    console.log(test[i]); //输出:我是字符串0, 我是字符串1, 我是字符串2

  }

console.log(test[0]); //输出:我是字符串0