# html當type=number時 無法設定manlength
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###### tags: `html` `javascript`

[input type="number" maxlength 属性无效](https://segmentfault.com/q/1010000013912243)



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oninput="if(value.length>3)value=value.slice(0,3)"

<div class="col-md-6 col-sm-6">
    <input type="number" min="0" id="" name="" class="form-control" oninput="if(value.length>3)value=value.slice(0,3)" />
    <span class="required">若無可抽獎次數 請設定為0</span>
</div>