lovecoding
/
W0407


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <ul>
        <li>你好</li>
        <li>你好</li>
        <li>你好</li>
        <li>你好</li>
    </ul>
    <script>
        // spread 扩展运算符 ... 将数组或对象展开成单独的字符
        // let arr1 = [1,2,3];
        // let arr2 = [4,5,6];
        // // let newArr = arr1.concat(arr2);
        // // let newArr = [...arr1,...arr2];
        // // console.log(newArr,'newArr')
        // let newArr = [...arr1];
        // console.log(newArr,'newArr')
        // newArr.push(4);
        // console.log(arr1,'arr1');
        // console.log(newArr,'newArr1');
        // let x = document.querySelectorAll('li');
        // console.log([...x],'x')
        // let y = [1,2,3];
        // function fn1(a,b,c) {
        //     console.log(a)
        // }
        // fn1(...y)

        let obj1 = {
            name: '图图',
            age: 3
        }
        let obj2 = {...obj1,address:"上海"};
        console.log(obj1,'obj1')
        console.log(obj2,'obj2')
    </script>
</body>
</html>