当我按下回车键时如何触发网站的按钮？

Question

there is a button in a website ,i want to trigger the button when i press enter key, i write the javascript for the same but my script is works suddenly for 2 or 3 second and then again stop working i wont be getting any solution ,please help me for this. i am using greasemonkey for this. my javascript is :

 // ==UserScript== // @name Enter 2 // @namespace www.irctc.co.in/eticketing/abubakar.js // @description press enter to go payment area // @include https://www.irctc.co.in/eticketing/* // @grant none // ==/UserScript== document.addEventListener("keydown", keyDownTextField, false); function keyDownTextField(e) { var keyCode = e.keyCode; if(keyCode==13) { document.getElementById("validate").click(); } } 

sorce code of button is:

 <input id="validate" type="button" value=" Next "> 

Answer 1

Works fine for me: http://jsfiddle.net/theagitator/vtn4c0nj/

<input id="validate" type="button" value="Next" onclick='alert("yo")'>

Notice, that you have to first click somewhere in the result window to make it active before pressing the enter.

This is not an answer, but I don't have enough reputation to comment on your question.

Answer 2

It could be that another element has focus, and is grabbing the key press. This can happen if there are multiple elements on a page that can be triggered by the Enter key.

As an alternative, if you set your input type to submit , the Return/Enter key will trigger that button without any JavaScript required, and it may solve your issue. If you only have one such input, you don't need to place it within a form element.

<input type="submit" id="validate" value="Next" onclick="doSomething();" />

Answer 3

Please try this code for captcha answer box :

<input id="target"
       class="text captcha-answer"
       type="text"
       autocomplete="off"
       maxlength="8"
       style="width:80px"
       name="j_captcha">

It should be work.