对于一个带有警告的简单表单,询问字段是否填写正确,我需要一个执行此操作的函数:
我认为JavaScript确认可行,但我似乎无法弄清楚如何。
我现在的代码是:
function show_alert() {
alert("xxxxxx");
}
<form>
<input type="image" src="xxx" border="0" name="submit" onclick="show_alert();" alt="PayPal - The safer, easier way to pay online!" value="Submit">
</form>
一个简单的内联JavaScript确认就足够了:
<form onsubmit="return confirm('Do you really want to submit the form?');">
除非您正在进行验证,否则不需要外部函数,您可以执行以下操作:
<script>
function validate(form) {
// validation code here ...
if(!valid) {
alert('Please correct the errors in the form!');
return false;
}
else {
return confirm('Do you really want to submit the form?');
}
}
</script>
<form onsubmit="return validate(this);">
function show_alert() {
if(confirm("Do you really want to do this?"))
document.forms[0].submit();
else
return false;
}
您可以使用JS确认功能。
<form onSubmit="if(!confirm('Is the form filled out correctly?')){return false;}">
<input type="submit" />
</form>
好的,只需将您的代码更改为以下内容:
<script>
function submit() {
return confirm('Do you really want to submit the form?');
}
</script>
<form onsubmit="return submit(this);">
<input type="image" src="xxx" border="0" name="submit" onclick="show_alert();"
alt="PayPal - The safer, easier way to pay online!" value="Submit">
</form>
这也是运行中的代码,只是让它更容易看到它是如何工作的,只需运行下面的代码来查看结果:
function submitForm() {
return confirm('Do you really want to submit the form?');
}
<form onsubmit="return submitForm(this);">
<input type="text" border="0" name="submit" />
<button value="submit">submit</button>
</form>