https://msdn.microsoft.com/en-us/library/ms533897(VS.85).aspx The innerHTML property is read-only on the col, colGroup, frameSet, html, head, style, table, tBody, tFoot, tHead,title, and tr objects.
<!DOCTYPE html><html><head><meta charset="UTF-8"><title>innerHTML测试页面</title> <script> function Test(){ var str=""; str+="Hello,"; str+="This is a Test!<br />"; str+=&