JavaScript选择文件的方法

通过 input 标签

第一种写法

-- --
-- ------
	---
		-- ------
		--------------
	---
	---
		-- ----- ---------
		---
			- ---- -
				---------
			-
		---
	---
---

第二种写法

-- --
-- ------
	---
		-- ------
		--------------
	---
	---
		-- ----- ------
		---
			----------- --- -
				---------
			---
		---
	---
---

通过 showOpenFilePicker 方法

不多选

-- --
-- ------
	---
		-- ------
		--------------
	---
	---
		-- -----------------
		---
			- - --- -
				- - - - -----
					-- --
					-- -
				---
				----- ----------
			-
		---
	---
---

多选

-- --
-- ------
	---
		-- ------
		--------------
	---
	---
		-- -----------------
		---
			- - --- -
				- - - ---
				- - - - -----
					-- --
					-- -
				---
				- -- - - -- - - ---- --- -
					----- ----------
				-
				-------
			-
		---
	---
---