jquery determines if the form form is empty

Function: Use jquery to determine if the form is not filled in, and if it is not filled, block the submission

$ (function () {$ (' form '). Bind (' Submit ', function () {//] bind the form tag to the Submit event Var i=0;　　　　　　$ ("input"). each (function () {///iterates through the input tag to determine if the content is not filled with Var vl=$ (this). Val ();　　　　　　if (vl== "") {I=1;　　　　}　　　　});  var t=$ (' textarea '). Val ();　　　　Determine if the textarea label is filled in if (t== ") {i=1;　　　　　　if (i==1) {//If there is not filled in, then return false to prevent the submission of alert (' Please fill in the information complete ');　　　　return false; }　　});});

jquery determines if the form form is empty