How can we add superscript in html page?

 <td>20<sup>o</sup>C</td>

is not giving the output with 'o' as super script. How can we add superscript in html page? I am getting the output as

开发者_如何学编程

20oC only!!

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Use ° to get the ° symbol.

P.S. <sup> should have worked.

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This doesn't make the text superscript but it will meet your needs for this occasion

<td>20&deg;C</td>

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Superscripts in HTML can be implied using the tag. Do it as this :

x<sup>2</sup>+2x+1