Javascript tips-js tutorial

This section describes how to dynamically add parameters that can be passed through and do not pass through the onclick event in js. For more information, see section 1. When there is no parameter in the method, you can directly use onclick = to assign a value.

Window. onload = function () {$ ('btntest'). onclick = test;} function test () {alert (val );}

2) When the method has parameters, an error occurs when onclick = method name (parameter) is used. You need to add function () before the method name ()

Window. onload = function () {$ ('btntest'). onclick = function () {test (1) };} function test (val) {alert (val );}