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39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
function checkPassword(str)
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{
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var re = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,}$/;
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return re.test(str);
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}
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/*
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matches a string of six or more characters;
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that contains at least one digit (\d is shorthand for [0-9]);
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at least one lowercase character; and
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at least one uppercase character:
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*/
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function checkForm(form)
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{
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if(form.username.value == "") {
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alert("Error: Username cannot be blank!");
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form.username.focus();
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return false;
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}
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re = /^\w+$/; //\w is shorthand for 'any letter, number or the underscore character'.
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if(!re.test(form.username.value)) {
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alert("Error: Username must contain only letters, numbers and underscores!");
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form.username.focus();
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return false;
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}
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if(form.pwd1.value != "" && form.pwd1.value == form.pwd2.value) {
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if(!checkPassword(form.pwd1.value)) {
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alert("The password you have entered is not valid!");
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form.pwd1.focus();
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return false;
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}
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} else {
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alert("Error: Please check that you've entered and confirmed your password!");
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form.pwd1.focus();
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return false;
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}
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return true;
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} |