Phone number validation using regex in java

Question

I am new to Java and Regex.

I have to do simple phone number validations.

<input type="tel" maxlength="10">

Here user can't entered more than 10 characters. but i need, if user try to enter string values should not allow. Only numbers should allow.and no space in between numbers also should not allow. Please help me how can achieve with reqex.

Answer 1

You may use

<input onkeypress="return (event.charCode == 8 || event.charCode == 0) ? null : event.charCode >= 48 && event.charCode <= 57" type="number" maxlength="10" />

• onkeypress="return (event.charCode == 8 || event.charCode == 0) ? null : event.charCode >= 48 && event.charCode <= 57" will handle numeric input
• maxlength="10" - will set the max symbol length.

Answer 2

尝试这个

<input type="number" onKeyDown="if(this.value.length==10) return false;" />

Answer 3

 <input type="number" maxlength="10">