Change Data-attribute On Click Of HTML Elements

I am trying to apply changes to the DOM when a is clicked. When clicked, it should add data-state=enabled and data-display=expanded to the clicked while apply

Solution 1:

Here is a pure javascript example in the below jsfiddle:

http://jsfiddle.net/pya9jzxm/14

    var tbody = document.querySelector('tbody');
    var trs = tbody.querySelectorAll('tr');
    var tr, index = 0, length = trs.length;
    for (; index < length; index++) {
        tr = trs[index];
        tr.setAttribute('data-state', 'enabled');
        tr.setAttribute('data-display', 'collapsed');
        tr.addEventListener('click',
            function () {
                if (this.classList.contains('alphabet-label')) {
                    return;
                }
                var trIndex = 0, trLength = trs.length, hasExpanded = false;
                var state = 'disabled';
                if (tbody.querySelectorAll('[data-display="expanded"]').length > 0) {
                    hasExpanded = true;
                    state = 'enabled';
                }
                for (; trIndex < trLength; trIndex++) {
                    trs[trIndex].setAttribute('data-state', state);
                    trs[trIndex].setAttribute('data-display', 'collapsed');
                }
                if (!hasExpanded) {
                    this.setAttribute('data-state', 'enabled');
                    this.setAttribute('data-display', 'expanded');
                }
            }
        );
    }
};

Solution 2:

in jQuery:

$(function() {
    $('html').click(function() {
        /* return to default state */
        $('.table tbody tr').data('state', 'enabled').data('display', 'expanded');
    });
    $('.table tbody tr').on('click', function(e) {
        /* stop the html click event */
        e.stopPropagation();
        /* set attributes for all rows */
        $('.table tbody tr').data('state', 'disabled').data('display', 'collapsed');
        /* set attributes for the clicked row */
        $(this).data('state', 'enabled').data('display', 'expanded');
    });
});

I've commented the function, to clarify how it works.

Solution 3:

Which is very simular to @LinkinTED

Please inspect the html before you say this does not work.. I've tested it myself.

May i suggest that you instead modify the class... to change the effects.

$(function() {

    var $row = $('.table tbody tr');

    $('html').click(function() {
        $row.attr('state', 'enabled').attr('display', 'expanded');
    });

    $row.on('click', function(e) {
        e.stopPropagation();
        $row
          .attr('state', 'disabled')
          .attr('display', 'collapsed');

      //console.log(e);

        $(this)
          .attr('state', 'enabled')
          .attr('display', 'expanded');
    });
});

Solution 4:

Using vanilla JS and event delegation. DEMO

var tablerow = document.body.getElementsByTagName('tr');
// Convert the HTMLCollection into a true javascript Array, so we can do "stuff" with it       
var tablerowArr = Array.prototype.slice.call(tablerow);
// store the highlighted row
var highlighted;

// extracted function to enable/disable rows
var enable = function(row){
    row.setAttribute('data-display', "expanded");
    row.setAttribute('data-state', "enabled");
}
var disable = function( row ){
    row.setAttribute('data-display', "collapsed");
    row.setAttribute('data-state', "disabled");
}
// on click anywhere
document.body.addEventListener('click', function(e){
    var target = e.target;
    // check if event target or any of its parents is a TR
    while( target.parentNode && target.nodeName.toLowerCase() != 'tr' ){
        target = target.parentNode;   
    }
    // if s row was higlighted disable all rows
    if( highlighted ){
        tablerowArr.forEach(  disable );
        // and remove the reference to highlighted
        highlighted = null;
    }
    // no row is highlighted
    else {
        tablerowArr.forEach( function(row){
            // if the event target is a row, highlight it
            if(row == target) {
                enable( row );
                // and store it as the currently highlighted
                highlighted = row;
            }
            // if it's not the event target then disable
            else {
                disable( row ); 
            }
        });
    }
});