JavaScript正则校验空格

1.校验开头不能有空格:
jQuery.validator.addMethod("firstNotHasBlank", function(value, element) {
    var fBlank =/^\S+/;
    return this.optional(element) || (fBlank.test(value));
}, "开头不能有空格");

2.校验结尾不能有空格:
jQuery.validator.addMethod("lastNotHasBlank", function(value, element) {
    var lBlank =/\S+$/;
    return this.optional(element) || (lBlank.test(value));
}, "结尾不能有空格");

3.校验不能包含空格:
jQuery.validator.addMethod("notHasBlank", function(value, element) {
    var pwdblank = /^\S*$/;
    return this.optional(element) ||(pwdblank.test(value));
}, "不可包含空格");