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30 lines
651 B
30 lines
651 B
<!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>focus</title> |
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<style> |
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.demo { |
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background-color: orange; |
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} |
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</style> |
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</head> |
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<body> |
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<button id="btn">显示输入框</button> |
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<script type="text/javascript"> |
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const btn = document.getElementById("btn") |
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btn.onclick = () => { |
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const input = document.createElement('input') |
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input.className = 'demo' |
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input.value = 99 |
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input.onclick = ()=>alert(1) |
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document.body.appendChild(input) |
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input.parentElement.style.backgroundColor = "skyblue" |
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input.focus() |
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} |
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</script> |
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</body> |
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</html> |