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30 lines
651 B
30 lines
651 B
2 years ago
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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>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>
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