javascript 如何使用jquery比较两个文本输入类型框值
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how to compare two text input type box values using jquery
提问by user1196392
I have a two textboxes t1
and t2
. I would like to figure out how in jquery if the values in t1
and t2
are same I can display an alert message. If user does not change the values I want to prevent the form from being submitted.
我有两个文本框t1
和t2
. 我想弄清楚如何在 jquery 中,如果t1
和t2
中的值相同,我可以显示警报消息。如果用户不更改值,我想阻止提交表单。
回答by Manse
Try something like this
尝试这样的事情
$('form').submit(function(evt) {
if ($('#textbox1').val() === $('#textbox2').val()) {
alert('values match');
evt.preventDefault();
}
}
uses the .submit()method to bind to the submit
event for the form, then compares the 2 values from the textboxes - if they are the same it displays an alert then prevents the default action (form submission) using event.preventDefault()
使用.submit()方法绑定到submit
表单的事件,然后比较文本框中的 2 个值 - 如果它们相同,则显示警报,然后使用event.preventDefault()阻止默认操作(表单提交)
回答by Anjan Kant
$("form").submit(function() {
var _txt1 = $('#txt1').val();
var _txt2 = $('#txt2').val();
if (_txt1 == _txt2)
{
alert('Matching!');
return true;
}
else
{
alert('Not matching!');
return false;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="#" method="post" name="form_name" id="form_id">
<input type="text" id="txt1" name="txt1" />
<input type="text" id="txt2" name="txt2"/>
<input type="submit" value="Submit">
</form>
回答by Baruch
jQuery
jQuery
$(document).ready(function() {
var _t1 = $("#t1");
var _t2 = $("#t2");
$(_t2).focusout(function() {
if(_t1.val() === _t2.val()){
return alert('Match');
}
return alert('No match');
});
});
HTML
HTML
<input id="t1">
<input id="t2">
回答by Rahul
Here is the code
这是代码
if(!$("#t1").val() && !$("#t2").val() && $("#t1").val() === $("#t2").val()){
alert("Both values are same");
}else{
return false;
}
I am doing strict type check for input values by ===.
我正在通过 === 对输入值进行严格的类型检查。
Hope this will help your requirement.
希望这将有助于您的要求。
回答by Mehran Ayub
<script>
function myfunction(){
var val1=document.getElementById('pwd').value;
var val2=document.getElementById('cpwd').value;
if(val1!=val2){
document.getElementById('match').innerHTML="Your password is unmatch";
return false;
}
return true;
}
</script>