HTML code:
The code copy is as follows:
Please enter the price:
<input type="text" id="txtProPrice" />
<input type="button" value="verify input" id="btnTest" />
JS code:
Copy the code as follows:<script src="jquery.js">
</script>
<script type="text/javascript" language="javascript">
function ckProPrice() {
//Judge product price
var reg = /(^[-+]?[1-9]/d*(/./d{1,2})?$)|(^[-+]?[0]{1}(/./d{1,2})?$)/;
if ($("#txtProPrice").val() == "") {
alert("The product price cannot be empty!");
return false;
} else {
if (!reg.test($("#txtProPrice").val())) {
alert("The market price must be a legal number (positive number, up to two decimal places)!");
return false;
} else {
alert("Enter legal! yige.org");
return true;
}
}
}
$(function() {
$("#btnTest").click(function() {
ckProPrice();
});
});
</script>