在 JavaScript 中单击按钮焦点输入
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On button click focus input in JavaScript
提问by Gragas Incoming
I am trying to autofocusinput on button click but it doesn't work. Code can be found here for edit: https://www.w3schools.com/code/tryit.asp?filename=FPPCFP5RTU9E
我试图autofocus在按钮点击时输入，但它不起作用。可以在此处找到代码进行编辑：https: //www.w3schools.com/code/tryit.asp?filename=FPPCFP5RTU9E
<input type="text" id="myText" autofocus>
<button onclick="myFunction()">Focus Input</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myText").autofocus = true;
}
</script>回答by Mamun
autofocusis an HTML attribute. If you want to set the focus property by JavaScript you have to use focus().
autofocus是一个 HTML 属性。如果你想通过 JavaScript 设置焦点属性，你必须使用focus().
So try document.getElementById("myText").focus();:
所以尝试document.getElementById("myText").focus();：
Working Code:
工作代码：
function myFunction() {
document.getElementById("myText").focus();
}<input type="text" id="myText" autofocus>
<button onclick="myFunction()">Focus Input</button>
<p id="demo"></p>