如何使用JavaScript将输入字段设置为只读? [英] How to make a input field readonly with JavaScript?
问题描述
我知道您可以将readonly="readonly"添加到输入字段中，以便其不可编辑.但是我需要使用javascript来定位输入的ID，并将其设置为只读，因为我无权访问表单代码(它是通过营销软件生成的)
I know you can add readonly="readonly" to an input field so its not editable. But I need to use javascript to target the id of the input and make it readonly as I do not have access to the form code (it's generated via marketing software)
我不想禁用输入，因为应该在提交时收集数据.
I don't want to disable the input as the data should be collected on submit.
这是我在以下建议中添加的页面，到目前为止没有运气:
Here is the page I have added in the below suggestion with no luck so far:
确保以后对使用此代码的任何人使用
<body onload="onLoadBody();">.Make sure you use
<body onload="onLoadBody();">for anyone using this in the future.推荐答案
您可以获取输入元素，然后将其
readOnly属性设置为true，如下所示:You can get the input element and then set its
readOnlyproperty totrueas follows:document.getElementById('InputFieldID').readOnly = true;具体来说，这就是您想要的:
Specifically, this is what you want:
<script type="text/javascript"> function onLoadBody() { document.getElementById('control_EMAIL').readOnly = true; } </script>在body标签上调用此
onLoadBody()函数，例如:Call this
onLoadBody()function on body tag like:<body onload="onLoadBody">观看演示: jsfiddle .
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