changing attribute state with Jquery

 

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  • .prop() vs .attr() 17 answers

    • The attr method changes an element attribute, which is the initial state. The prop value changes the element property, which is the current state.

    To set the checked state, use the prop method: 

    $('input[name=giustificaEntrata]').prop('checked', true);'

    To select an option, use the val method: 

    $('select[name=pippo]').val('beta');

    The checkbox checked property basically has two states. checked - true & checked - false.

    From prop documentation, According to the W3C forms specification, the checked attribute is a boolean attribute.

    Also, The checked attribute value does not change with the state of the checkbox, while the checked property does. 

    $('[name="giustificaEntrata"]').prop('checked',true);
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