将 Element id 设置为变量 - JavaScript / HTML
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Set an Element id to a variable - JavaScript / HTML
提问by jdnoon
I was wondering if it was possible to add an id to a variable in JavaScript.
我想知道是否可以在 JavaScript 中向变量添加 id。
Like This...
像这样...
JavaScript:
JavaScript：
var name = "#userid";
HTML:
HTML：
<input type="text" id="userid" />
... So I want to set a variable to the input in the HTML. I have tried using
...所以我想为 HTML 中的输入设置一个变量。我试过使用
getElementById()
I'd like it so when a "userid" is entered into the input, I would like to set that to a variable in JS.
我喜欢它，所以当“userid”输入到输入中时，我想将它设置为 JS 中的一个变量。
Much Appreciated...
非常感激...
Thank You, James Noon
谢谢你，詹姆斯中午
回答by freefaller
This will update a global variable called name, when the value in the textbox is changed (but only once the user has left the control, by clicking or tabbing out)...
这将更新一个名为 的全局变量name，当文本框中的值发生更改时（但只有在用户离开控件时，通过单击或跳出）...
<input type="text" id="userid" onchange="name=this.value;" />
If you want to update the global variable at some other time (a different event) then you want this script...
如果您想在其他时间（不同的事件）更新全局变量，那么您需要此脚本...
var name = document.getElementById("userid").value;
回答by Nishad K Ahamed
<input type="text" onChange="setValue(this.value)">
function setValue(value){
var textVal=value;//here u will get the entered text
}
