JS Verify the legality of the phone number code

The positive of the cell phone number verification is:

The code is as follows	Copy Code
var reg =/^0{0,1} (13[0-9]|15[7-9]|153|156|18[7-9]) [0-9]{8}$/; var reg =/^0{0,1} (13[0-9]|15[0-9]) [0-9]{8}$/;

There is also a way of writing

The code is as follows	Copy Code
var regex = { Mobile:/^0? (13[0-9]|15[012356789]|18[0236789]|14[57]) [0-9] {8}$/ }

Analysis of Expressions:
"/" represents a regular expression.
"^" represents the starting position of the string, and "$" represents the end position of the string.
“?” Represents a match to the previous character one or 0, so here's 0? The cell phone number can start with 0 or not 0.
The next part of the verification of the 11-bit mobile phone number, starting from 13, since 130-139 have so can be the selection between the [0-9],15 number is not 154 so [] There is no 4 this number, of course, can also be written [0-35-9], the following 18 and 14 open the number ibid.
The parentheses enclose a subexpression that contains 4 optional branches, respectively, with a "|" To distinguish between the "|" in the regular. The priority is the lowest, where each branch matches 3 characters (one [] can only match one character, inside is optional meaning), that is, mobile phone number of the first 3 digits, then there are 8 digits to match, can be 0-9 of any character, so is "[0-9]{8}", {} The number in represents the number of characters that match the preceding character. Analysis completed.

Example 1

The code is as follows	Copy Code
function Ismobel (value) { if (/^13d{9}$/g.test (value) | | (/^15[0-35-9]d{8}$/g.test (value)) | | (/^18[05-9]d{8}$/g.test (value)) {return true;} Else {return false;} }

Example 2

The code is as follows

Copy Code

function Checkchinamobileid (MOBILE) { if (mobile== "") { Alert ("Please fill in your mobile number!") "); return false; } if (isNaN (mobile) | | (mobile.length!=11)) { Alert ("Mobile phone number is 11 digits!") Please fill in the correct! "); return false; } var reg =/^0{0,1} (13[4-9]|15[7-9]|15[0-2]|18[7-8]) [0-9]{8}$/; if (!reg.test (mobile)) { Alert ("Your mobile number is not a mobile number, please re-enter"); return false; } Alert ("Big uncle, this really mobile phone number"); return true; } function Checkismobile (MOBILE) { if (mobile== "") { Alert ("Please fill in your mobile number!") "); return false; } if (isNaN (mobile) | | (mobile.length!=11)) { Alert ("Mobile phone number is 11 digits!") Please fill in the correct! "); return false; } var reg =/^0{0,1} (13[0-9]|15[0-9]) [0-9]{8}$/; if (!reg.test (mobile)) { Alert ("Your cell phone number is incorrect, please re-enter"); return false; } Alert ("Big uncle, this is really mobile phone number, is where I do not know"); return true; }

Another regular cell phone number method

The code is as follows

Copy Code

<script type= "Text/javascript" > function Enterevent () { Key=window.event.keycode; if (key==0xd) {//Determine if the ENTER key is pressed Mobile_click (); } } function CM (m) { if (M.length > 11) { return false; }else{ var t=/^ (13d{9}) | (15d{9}) | (18d{9}) | (0d{10,11}) $/; Return T.test (m); } } Window.onload=function () { var C=document.getelementbyid ("MB"); C.focus (); } function Mobile_click () { var C=document.getelementbyid ("MB"); if (! CM (C.value)) { Alert ("Please enter a correct cell phone number.") "); C.select (); }else{ document.getElementById ("Inputcall"). style.display= "None"; document.getElementById ("Show"). style.display= "Block"; document.getElementById ("Iframediv"). style.display= "Block"; } } </script>