//input 限制输入数字和小数
<input type="text" name="demo" value="" onkeyup="if(isNaN(value))execCommand(\'undo\')" onafterpaste="if(isNaN(value))execCommand(\'undo\')"/>
说明: 在input 添加属性
onkeyup="if(isNaN(value))execCommand(\'undo\')"
onafterpaste="if(isNaN(value))execCommand(\'undo\')"
limiting the input digital input and decimal
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Origin www.cnblogs.com/linhuaming/p/11903503.html
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