document.getElementById(“ID”)。value not working
我需要你的帮助。我有一个非常简单的问题,我无法弄清楚。它很难解释,但我对一条线有评论,我希望你能理解它。这是我的代码。对于长篇帖子感到抱歉,但我似乎无法摆脱这个漏洞。document.getElementById(“ID”)。value not working
function CheckLength() {
var stringpassword = document.getElementById('Pass').value;
alert(document.getElementById('Pass').value); --> this part is only printing a blank.
/*
if(document.getElementById("Pass").value.length > 8)
{
return true;
}
else
{
alert(document.getElementById("Pass").value.length);
return false;
}
*/
}
function Check(a)
{
switch(a)
{
case 1 :
var first = document.getElementById("Uname").value.toUpperCase().indexOf(document.getElementById("Fname").value.toUpperCase());
var last = document.getElementById("Uname").value.toUpperCase().indexOf(document.getElementById("Lname").value.toUpperCase());
if(first !=-1 || last != -1)
{
alert("huy mali ang username. bawal yan pre");
document.getElementById("Uname").value = "";
}
break;
case 2 :
var gate = 0;
var first = document.getElementById("Pass").value.toUpperCase().indexOf(document.getElementById("Fname").value.toUpperCase());
var last = document.getElementById("Pass").value.toUpperCase().indexOf(document.getElementById("Lname").value.toUpperCase());
if(first !=-1 || last != -1)
{
alert("mali dahil sa name");
gate++;
}
if(!CorrectPassword())
{
gate++;
}
if(!CheckLength())
{
gate++;
}
if(gate != 0)
{
alert("Please follow password policy");
document.getElementById("Pass").value="";
}
break;
case 3:
if(document.getElementById("Pass").value != document.getElementById("Rpass").value)
{
document.getElementById("Rpass").value = "";
}
break;
}
}
在身体某处:
<input type="Password" placeholder="Password" value="" id="Pass" onblur="Check(2)"/>
但是当我尝试它。在密码字段上输入密码后,点击其他一些。警报框只会返回一个空白警报框。即使简单的赋值语句不起作用?原谅我的坏英语
回答:
我得到它的工作......我不得不取出检查checkPassword(),因为你没有提供该功能。
在#Pass元素上,删除onblur属性。我把它分配在我提供的js的底部。
的jsfiddle:http://jsfiddle.net/jeffshaver/vcRDp/1/
function CheckLength() { var stringpassword = document.getElementById('Pass').value;
alert(document.getElementById('Pass').value);
/*
if(document.getElementById("Pass").value.length > 8)
{
return true;
}
else
{
alert(document.getElementById("Pass").value.length);
return false;
}
*/
}
function Check(a) {
switch(a) {
case 1 :
var first = document.getElementById("Uname").value.toUpperCase().indexOf(document.getElementById("Fname").value.toUpperCase());
var last = document.getElementById("Uname").value.toUpperCase().indexOf(document.getElementById("Lname").value.toUpperCase());
if(first !=-1 || last != -1) {
alert("huy mali ang username. bawal yan pre");
document.getElementById("Uname").value = "";
}
break;
case 2 :
var gate = 0;
if(first !=-1 || last != -1) {
alert("mali dahil sa name");
gate++;
}
if(!CheckLength()) {
gate++;
}
if(gate != 0) {
alert("Please follow password policy");
document.getElementById("Pass").value="";
}
break;
case 3:
if(document.getElementById("Pass").value != document.getElementById("Rpass").value) {
document.getElementById("Rpass").value = "";
}
break;
}
}
documentgetElementById('Pass').addEventListener('blur', function() { Check(2) }, false);
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