jquery $ (this). attr $ (this). Introduction to the use of Val method _jquery

$ (this). attr (key); Gets the value of the node property name, equivalent to the getattribute (key) method

$ (this). attr (key, value); Sets the value of a node property, equivalent to the setattribute (Key,value) method

Eg:<div id= "w_1" class= "widget" diywidgetid= "${template.diywidgetid}" ></div>

var Diywidgetid = $ (' #w_1 '). attr (' Diywidgetid '); Get the value of a node property

$ (this). Val (); Gets the value of an element node, equivalent to $ (this). attr ("value");

$ (this). Val (value); Set the value value of an element node, equivalent to $ (this). attr ("value", value);

Eg:<input id= "I_eg" value= "1" type= "text" ></input>

var i_eg=$ (' #i_eg '). Val (); Gets the value of an element node