877acb5a8f
- Implemented exercises for array high-order methods, memory and execution, switch statements, and final review. - Added starter and answer files for each exercise to facilitate learning. - Created a runner HTML file to execute JavaScript code and display console outputs. - Updated README files to include exercise objectives, tasks, and usage instructions.
40 lines
869 B
JavaScript
40 lines
869 B
JavaScript
let scoreA = 80;
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let scoreB = scoreA;
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scoreB = 95;
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console.log("基本类型 scoreA：", scoreA);
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console.log("基本类型 scoreB：", scoreB);
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console.log("基本类型复制后，两个变量互不影响。");
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const userA = {
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name: "小周",
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city: "上海",
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};
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const userB = userA;
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userB.city = "深圳";
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console.log("对象 userA：", userA);
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console.log("对象 userB：", userB);
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console.log("对象变量保存的是引用，所以改 userB 会影响 userA。");
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function printStepOne() {
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console.log("步骤一：先进入第一个函数");
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}
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function printStepTwo() {
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console.log("步骤二：再执行第二个函数");
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}
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function updateUser(user) {
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user.city = "杭州";
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console.log("函数内部修改后的 user：", user);
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}
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printStepOne();
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printStepTwo();
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updateUser(userA);
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console.log("函数执行结束后的 userA：", userA);
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