JavaScript full-width to half-width part_javascript skills

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Use JS to convert full-width to half-width (only numbers are allowed)
HTML

Copy code The code is as follows:

onkeypress="var k=event.keyCode; return k>=48&&k< =57"
onpaste="return !clipboardData.getData('text').match(/D/)"
ondragenter="return false" style="ime-mode:Disabled"
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