JQuery Judging positive integers

var totalpage = document.getElementById ("Totalpage"). Value.trim ();//Get Total page

var reg=/^[1-9]\d*$/; Regular expressions starting with 1-9

Determine whether an integer is within the range of 1-Total page integers

if (Reg.test (SearchBox)) {

if (parseint (searchbox) > 0 && parseint (searchbox) <= totalpage) {

alert (searchbox);

}else{

Alert ("the page number entered exceeds the specified range!!!");

document.getElementById ("SearchBox"). Value = ""; Empty

Return

}

}else{

Alert ("Please enter a valid integer number!!");

document.getElementById ("SearchBox"). Value = ""; Empty

Return

}

This article is from the "Exist" blog, make sure to keep this source http://exist.blog.51cto.com/10305882/1957130

JQuery Judging positive integers