如何使用Javascript模拟输入框中的键入?

问题描述：

我想做的是使输入框认为我在其中输入数字，而不是更改所述输入的值.所以我要做的第一件事就是将输入框设置为变量:

What I am trying to do is make the input box think that I am typing numbers into it rather than changing the value of said input. So the first thing I did was make the input box a variable:

var input = document.querySelectorAll("input")[1];

然后，我要做的就是将输入框对准焦点，使其看起来就像我用鼠标单击它一样:

Then what I did was focus the input box to make it seem like I had clicked in it with my mouse:

input.select();

这是我现在要坚持的部分.我想做的是让输入框认为我在其中输入了数字，例如41.如果有人可以告诉我，我需要在控制台中输入什么代码，以使输入框认为我输入了"41" ，这将不胜感激.谢谢.

This is the part that I am now stuck on. What I would like to do is make the input box think that I typed a number into it, say, 41. If anyone could please tell me what code I need to put into console to make the input box think I typed in "41", it would be greatly appreciated. Thank you.

答

您可以使用setTimeout并每次添加一个字符，如下所示:

You can use setTimeout and add one character each time like this :

var input = document.querySelectorAll("input")[1];
input.select(); // you can also use input.focus()
input.value="";

var text = "41";
var l=text.length;
var current = 0;
var time = 1000;


var write_text = function() {
  input.value+=text[current];
  if(current < l-1) {
    current++;
    setTimeout(function(){write_text()},time);
  } else {
    input.setAttribute('value',input.value);
  }
}
setTimeout(function(){write_text()},time);

<input type="text">
<input type="text">

这将与您要编写的任何内容一起使用，您只需要根据需要调整变量即可.

This will work with any content you want to write, you simply need to adjust the variable with what you need.

如何使用Javascript模拟输入框中的键入?

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