BlueBreeze

maxlength attribute cannot be used on input tags which type attribute is number, it will not take any effect. There are 2 work arounds to achieve the same functionality though.

1. Use the max attribute. It will specify the highest possible number that you may insert

    <input type="number" max="999" />
   

   if you add both a max and a min value you can specify the range of allowed values:

    <input type="number" min="1" max="999" />
   

2. Use js code

    <input 
        name="somename"
        oninput="javascript: if (this.value.length > this.maxLength) this.value = this.value.slice(0, this.maxLength);"
        type = "number"
        maxlength = "6"
    />