<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>+操作符</title><script type="text/javascript">? var mynum= 37;? var mychar=98;? document.write("mynum的值:"+mynum+"<br>");? document.write("mychar的值:"+mychar);? document.write("mychar的值:"+mychar+mynum);</script></head><body></body></html>document.write("mychar的值:"+(mychar+mynum));才可以輸出135
為什么document.write("mychar的值:"+mychar+mynum);輸出的是9837而不是135
慕姐8259394
2017-07-24 23:45:43
