当我调用该函数时,它会被调用,但会闪烁结果。请问我犯了什么错误?
以下是我使用的HTML代码:
我已经将输入类型替换为按钮,但是仍然无法解决错误。
function reg() {
//Name Field
var f = document.forms["registration"]["fullname"].value;
if (f == "") {
alert("Enter the name");
return false;
} else if (!f.match(/^.[a-zA-Z]+$/))
{
alert("Enter only alphabets");
return false;
}
document.getElementById('details').innerHTML = "Hi" + registration.fullname.value;
}
<form name="registration" onsubmit="return reg()">
<input type="text" name="fullname" placeholder="Enter Your Full Name"><br><br>
<input type="submit" value="submit">
</form>
答案 0 :(得分:1)
这是我相信您想要做的。
请注意,最好在脚本中添加事件处理程序,而不要使用内联处理程序,但是现在我将表单本身传递给函数
function reg(form) {
//Name Field
var f = form.fullname.value;
if (f == "") {
alert("Enter the name");
return false;
}
// no need for else when you return
if (!f.match(/^[\. a-zA-Z]+$/)) { // I personally have a space in my full name
alert("Enter only alphabets and space");
return false;
}
document.getElementById('details').innerHTML = "Hi " + f;
// change to true if you want to submit the form but you will then not be able to see the HI
return false;
}
<form name="registration" onsubmit="return reg(this)">
<input type="text" name="fullname" placeholder="Enter Your Full Name"><br><br>
<input type="submit" value="submit">
</form>
<span id="details"></span>