Question

我在IE，Chrome，FireFox上尝试了下一个代码，它不起作用;

我想模拟输入框中的字符。

为什么它不按预期工作？

你能帮忙吗？

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <title>Example XHTML page</title>
    <script>
        function simulateKeyPress1() {
            var txt1 = document.getElementById("txt1");
            if (document.implementation.hasFeature("KeyboardEvents", "3.0")) 
  {
                var event = document.createEvent("KeyboardEvent");
                //initialize the event object
                event.initKeyboardEvent('keydown', true, false, null, 0,   
                                        false, 0, false, 77, 0);

                txt1.dispatchEvent(event);
            }            
        }

        function simulateKeyPress2() {
            //for Firefox only
            var txt1 = document.getElementById("txt1");
            //create event object
            var event = document.createEvent("KeyEvents");
            //initialize the event object
            event.initKeyEvent("keydown", true, true, document.defaultView,  
                               false, false,true, false, 65, 65);
            //fire the event
            txt1.dispatchEvent(event);
        }
    </script>
</head>
<body>
    <input id="txt1" type="text"/>
    <p><button onclick="simulateKeyPress1()">SomeButton</button></p>
</body>
</html>

为什么我无法模拟按键事件？

0 个答案: