jquery $(this).attr $(this).val method introduction_jquery

$(this).attr(key); Gets the value of the node attribute name, which is equivalent to the getAttribute(key) method

$(this).attr(key, value); Sets the value of the node attribute, which is equivalent to setAttribute(key, value) method

eg:

var diywidgetid = $('#w_1').attr('diywidgetid'); //Get node attributes The value of

$(this).val(); gets the value of an element node, equivalent to $(this).attr(“value”);

$(this) .val(value); Set the value of an element node, equivalent to $(this).attr(“value”,value);

eg:

var i_eg=$('#i_eg').val(); // Get the value of the element node