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我必须将 .doc、.docx 和 .txt 文件转换为同名的 pdf，请您给我建议任何可以帮助我的 api 或代码，请帮忙
它们之间有什么区别，第一个真的跑得更快吗？
for (x in myArray) { document.write(myArray[x] + "<br />") } for (i=0; i<myArray.length; i++) { document.write(myArray[i] +