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HTML restricts the text box to only input numbers onkeyup+onafterpaste

Author：Eve Cole Update Time：2009-06-20 16:35:20

Limit the text box to only numbers

<input onkeyup="if(isNaN(value))execCommand('undo')" onafterpaste="if(isNaN(value))execCommand('undo')">
<input name=txt1 onchange="if(/D/.test(this.value)){alert('Only numbers can be entered');this.value='';}">
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