如何在addEventListener中使用函数传递参数？

无需传递任何内容。用于的函数

addEventListener

this

this

productLineSelect.addEventListener('change', getSelection, false);function getSelection() {    var value = this.options[this.selectedIndex].value;    alert(value);}

如果要将任意数据传递给函数，请将其包装在您自己的匿名函数调用中：

productLineSelect.addEventListener('change', function() {    foo('bar');}, false);function foo(message) {    alert(message);}

如果你想设置的值

this

call

var self = this;productLineSelect.addEventListener('change', function() {    getSelection.call(self);    // This'll set the `this` value inside of `getSelection` to `self`}, false);function getSelection() {    var value = this.options[this.selectedIndex].value;    alert(value);}