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<!DOCTYPE html> |
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<html lang="en"> |
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<head> |
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<meta charset="UTF-8"> |
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<title>Jiusanqi</title> |
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<style> |
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|
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table{ |
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height: 350px; |
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width: 270px; |
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text-align: center; |
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} |
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input{ |
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height: 100%; |
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width: 350px; |
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font-size: 50px |
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} |
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</style> |
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</head> |
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<body> |
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|
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<table border="1" align="center" bgColor="#00bfff" > |
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<tr> |
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<td colspan="4"> |
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<input type="text" id="nummessege" /> |
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</td> |
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</tr> |
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<tr> |
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<td onclick="onclicknum(1)"> |
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1 |
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</td> |
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|
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<td onclick="onclicknum(2)"> |
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2 |
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</td> |
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|
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<td onclick="onclicknum(3)"> |
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3 |
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</td> |
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|
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<td onclick="onclicknum('+')"> |
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+ |
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</td> |
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</tr> |
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|
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<tr> |
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<td onclick="onclicknum(4)"> |
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4 |
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</td> |
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|
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<td onclick="onclicknum(5)"> |
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5 |
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</td> |
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|
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<td onclick="onclicknum(6)"> |
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6 |
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</td> |
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|
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<td onclick="onclicknum('-')"> |
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- |
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</td> |
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</tr> |
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|
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<tr> |
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<td onclick="onclicknum(7)"> |
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7 |
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</td> |
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|
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<td onclick="onclicknum(8)"> |
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8 |
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</td> |
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|
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<td onclick="onclicknum(9)"> |
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9 |
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</td> |
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|
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<td onclick="onclicknum('*')"> |
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* |
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</td> |
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</tr> |
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|
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<tr> |
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<td colspan="2" onclick="onclicknum(0)"> |
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0 |
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</td> |
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<td onclick="onclicknum('.')"> |
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. |
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</td> |
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|
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<td onclick="onclicknum('/')"> |
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/ |
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</td> |
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</tr> |
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|
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<tr> |
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|
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<td colspan="2" onclick="onclickclear()"> |
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Del |
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</td> |
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|
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<td colspan="2" onclick="onclickresult()"> |
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= |
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</td> |
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|
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</tr> |
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</table> |
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<script> |
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let numresult; |
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let str; |
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|
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function onclicknum(nums) { |
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str = document.getElementById("nummessege"); |
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str.value = str.value + nums; |
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} |
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|
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function onclickclear() { |
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str = document.getElementById("nummessege"); |
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str.value = ''; } |
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function onclickresult() { |
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str = document.getElementById("nummessege"); |
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numresult = eval(str.value); |
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|
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str.value = numresult; |
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} |
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</script> |
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</body> |
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</html> |
