从Javascript函数返回值设置HTML文本框值

I've two separate HTML file and .js file. I have a calculate method which return the result in the javascript file.

我有两个单独的HTML文件和.js文件。我有一个计算方法，它返回javascript文件中的结果。

My question is how to set a textbox value from a javascript return value. Or at least from a separate javascript file. Initially I tried below which doesn't work as javascript and html are separated.

我的问题是如何从javascript返回值设置文本框值。或至少从单独的javascript文件。最初我尝试下面的功能不起作用，因为javascript和html是分开的。

function Calculate(ch) 
{
    //...
    document.getElementById('Input').value = resultValue;
}

Thanks!

谢谢！

3 个解决方案

#1

eval is the soution for my problem. Input.value = eval(Calculate(ch))

eval是我问题的源泉。 Input.value = eval（Calculate（ch））

#2

try to define the js-file in the bottom of your html-file (near the </body>). if you defined it above the targeted element its unknown. this may help.

尝试在html文件的底部（靠近）定义js文件。如果你在目标元素之上定义它的未知数。这可能有所帮助。

felix

费利克斯

#3

Access textarea contents using the innerHTML property, not the value property.

使用innerHTML属性访问textarea内容，而不是value属性。

function Calculate(ch)  {
    //...
    document.getElementById('Input').innerHTML = resultValue;
}

#1