相关疑难解决方法(0)

<script type="text/javascript">
function validate() {
    if (document.form.price.value.trim() === "") {
        alert("Please enter a price");
        document.form.price.focus();
        return false;
    }
    if (document.form.price.value !== "") {
        if (! (/^\d*(?:\.\d{0,2})?$/.test(document.form.price.value))) {
            alert("Please enter a valid price");
            document.form.price.focus();
            return false;
        }
    }
    return true;
}
</script>

<form action="" method="post" name="form" id="form" onsubmit="return validate(this);">

<input name="price"  type="text" class="r2" />
<input name="price2" type="text" class="r2" />
<input name="price3" type="text" class="r2" />
<input name="price4" type="text" class="r2" />
<input name="price5" type="text" class="r2" />
...more....
<input name="price50" type="text" class="r2" />

这个JavaScript代码工作正常,以验证字段"价格". …