How to make ie11 run javascript

IE11 is a version of the Internet Explorer browser that may no longer be the most popular browser, but is still widely used. If you want IE11 to run JavaScript code correctly, you need to check the following aspects.

1. Enable JavaScript

First make sure JavaScript is enabled in the IE11 browser. By default, JavaScript is enabled in IE11 browser. But you can check whether JavaScript is enabled in your browser security options.

Here are the steps to enable JavaScript:

• In IE11’s top menu bar, click the Tools icon (gear shape).
• Select the "Internet Options" menu and then select the "Security" tab.
• Select the "Custom level" button to open the "Security Settings" window.
• Enable the "Active scripting" option and click the "OK" button.

2. Update the browser version

Early versions of IE11 have some JavaScript compatibility issues. If your IE11 version is older, you can update to the latest version.

Here are the steps to upgrade IE11:

• In the top menu bar of IE11, click the Tools icon.
• Select the "About Internet Explorer" menu and check the browser version in the pop-up window.
• If your IE11 browser version is not the latest, please download and install the appropriate IE11 update patch according to your Windows operating system.

3. Follow JavaScript grammar rules

JavaScript is a programming language that strictly requires correct grammar. If there are errors in your JavaScript code, the IE11 browser will not function properly.

The following are the key syntax rules in the sample code:

// 变量定义必须有关键字 var/let/const
var message = "Hello World!";

// 每句语句的结尾必须有 ;
if (condition) {
  // do something
} else {
  // do something else
}

// 函数必须有返回值类型及返回值
function myFunction(x, y) {
  return x + y;
}

// 变量名和函数名只能包含英文字母、数字或_，并且第一个字符不能是数字
var myVariable = 10;
function myFunction() {
  // do something
}

// 代码块必须用{}括起来
if (condition) {
  // do something
}

4. Use JavaScript features not supported by IE11

IE11 may not support the latest JavaScript features, so you need to Check whether your JavaScript code uses features that IE11 does not support.

The following are some JavaScript features that may not be supported by IE11:

• const and let variables
• arrow functions
• Promise

If your JavaScript code uses the above features, please use the relevant polyfill library to provide the corresponding functions required by IE11.

5. Debugging JavaScript code

If your JavaScript code cannot run normally in the IE11 browser, you can use the built-in debugging tool (F12 development tool) of the IE11 browser to debug the JavaScript code.

Here are the steps to debug JavaScript using the F12 development tools:

• In the top menu bar of IE11, click the Tools icon.
• Select the "Developer Tools (F12)" menu to open the website's development tools.
• Select the "Console" tab to view JavaScript errors.

In the F12 development tools, you can also step through JavaScript code and view the values ​​of variables in the "Debugger" tab.

Summary

Ensuring that JavaScript is enabled, updated to the IE11 version, following JavaScript syntax rules, using supported JavaScript features in IE11, and debugging JavaScript code will enable IE11 to run JavaScript code correctly Key elements. If you're having trouble optimizing your IE11 browser to ensure JavaScript runs properly, we hope this article has provided you with some help and guidance.

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