[英]how to stay on same page after alert in JavaScript
onClick=validateForm()
it shows alert if it is blank but it goes to next page("action=some.php") so any idea how to be on same page after alert? onClick=validateForm()
会显示警报是否为空白,但会转到下一页(“ action = some.php”),因此在警报后如何在同一页面上有任何想法吗?
function validateForm() {
var x = document.forms["uploadForm"]["userImage"].value;
if (x == "") {
alert("Choose the file !!!!!");
return false;
}
var p = document.forms["uploadForm"]["Start_Date"].value;
var q = document.forms["uploadForm"]["End_Date"].value;
if (p == "" && q=="") {
alert("Select the date !!!!!");
return false;
}
var radio = document.forms["uploadForm"]["radio"].value;
if (radio == "") {
alert("Select the Radio !!!!!");
return false;
}
}
I used onClick="return validateForm()"
in place of onClick=validateForm()
. 我用
onClick="return validateForm()"
代替了onClick=validateForm()
。 Thank you so much @epascarello for your quick answer. 非常感谢@epascarello的快速回答。
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