<input type = "number" > 限制只能输入数字<input type = "number" oninput="if(value.length>11)value=value.slice(0,11)"> 限制输入的长度为11
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<input type = "number" > 限制只能输入数字<input type = "number" oninput="if(value.length>11)value=value.slice(0,11)"> 限制输入的长度为11
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