使用JQuery设置HTML属性

Question

I am using a combination of JQuery, Modernizr, and Angular to achieve a custom Datepicker solution for a table generated via ng-repeat. The solution works if I hard-code the Angular directive of "datepicker" into the HTML.

So, for example, within my table using ng-repeat"revenue in runway.revenues" this works:

 <td> 
     <input type="date" class="form-control" ng-model="revenue.date" placeholder="YYYY-MM-DD" datepicker required/> 
 </td>

But I would like for this to only be put into place when the user is in a browser that requires it. So, with this in mind, I have deleted datepicker from the above HTML, and written this in JS:

    $(function() {
        var nativeDateInputIsSupported = Modernizr.inputtypes.date;
        if (!nativeDateInputIsSupported) {
            $('input[type="date"]').prop("datepicker", true)
        }
    });

However, when I land on the page in Firefox, it does not appear to work.

Further, if I try to debug by doing something like console.log($('input[type="date"]').prop("class")) the value returned will be undefined (which should be form-control ).

Any tips would be greatly appreciated!

Answer 1

Use .attr() or .setAttribute() to set attribute at HTML

 document.querySelector("input").setAttribute("datepicker", true); console.log(document.querySelector("input").outerHTML); 

 <input type="text"> 

 $("input").attr("datepicker", true); console.log($("input")[0].outerHTML); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"> </script> <input type="text"> 

 $("input").prop("datepicker", true); console.log($("input")[0].outerHTML); // attribute not set at HTML 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"> </script> <input type="text"> 

Answer 2

I was able to get this to work by taking an idea from user @guest271314 and expanding on it a bit!

Rather than adding the attribute to the HTML based on Modernizr, I set a $scope variable equal to a boolean value.

  $(function() {
        var nativeDateInputIsSupported = Modernizr.inputtypes.date;
        if (!nativeDateInputIsSupported) {
            $scope.datePickerValue = "true"
        }
    });

Within my directive, I added this:

function link(scope, element, attrs, controller) {
        var requiredParam = attrs.datepicker === 'true'; //This was what was added
        if (requiredParam) { //Checking for boolean value
            element.datepicker({
                dateFormat: "yy-mm-dd",
                maxDate: '0'
            });
        }
    }

Which meant that in my HTML I added datepicker="{{datePickerValue}}" to the Date inputs, which now works!! Thank you for all of the help, I wouldn't have come back to this without your input =)