JS input type date field, keep values selected aft

问题:

Is there a way for the

<input type="date" id="from" class="mdl-textfield__input" name="from" value="{{moment date=d format='YYYY-MM-DD'}}" style="position:relative; float: left; width: 180px; bottom: 10px;"/>

field to remember selected value after form submission?

回答1:

You can use the HTML5 Local Storage to save the date after the submit. This is how you can do it:

1) Add to your form onsubmit function:

<form onsubmit="setDate()"> 

2) Create Setter and Getter functions to the date:

    function setDate(){
        var value = document.getElementById('from').value;
        localStorage.setItem("user_selected_date", value); 
    }
    function getDate(){
        if (localStorage.getItem("user_selected_date") === null) {// Check if there is selected date. 
              return "{{moment date=d format='YYYY-MM-DD'}}"; 
        }
        return localStorage.getItem("user_selected_date");
    }

3) Set the value to your input:

document.getElementById('from').value = getDate();

回答2:

i guess you want something like this ? :

stored the value in a variable after clicking the submit button. you can do whatever you want with that variable

$("#submit").click(function(){


var dateStore = $("input[type='date']").val()
alert(dateStore)

});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="date" id="from" class="mdl-textfield__input" name="from" value="{{moment date=d format='YYYY-MM-DD'}}" style="position:relative; float: left; width: 180px; bottom: 10px;"/>
<button type="submit" id="submit">
Submit
</button>

回答3:

Use HTML5 with storage stored the value in a variable after clicking the submit button. you can do whatever you want with that variable

localStorage.setItem("user_selected_date", value);