[英]How do you change the value of an HTML element with javascript?
I have this: <input type="button" value="hello">
I want to change the value
with javascript so that it is value="goodbye"
. 我有这个:
<input type="button" value="hello">
我想用javascript更改value
,以便它是value="goodbye"
。 How do I do this? 我该怎么做呢?
Following @David's advice in the comments below here is the code I tried but could not get to work before posting this question: 在下面的评论中关注@ David的建议是我尝试的代码,但在发布此问题之前无法开始工作:
var createBttn = document.getElementById('create');
createBttn.innerHTML = 'value="goodbye"';
First you need to get a reference to the object that you want to change the value on, then assign the value
property of that element, like this: 首先,您需要获取要更改值的对象的引用,然后分配该元素的
value
属性,如下所示:
Say your element had an id
of "someButton": 假设你的元素的
id
为“someButton”:
var btn = document.getElementById('someButton');
btn.value = 'goodbye';
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