UI debug tool

便于前端开发者调试ui 技巧来源于 https://juejin.im/post/5d74b29d6fb9a06aea61b8b9

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         UI debug tool
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  便于前端开发者调试ui 技巧来源于 https://juejin.im/post/5d74b29d6fb9a06aea61b8b9
// @author       You
// @include      *
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var KEY_CODE = 117 // F6  修改这里绑定自己的快捷键
    var remove // 用于记录remove函数 以及判端移除还是插入

    function insertStyle(){
        var styleContent = 'body * {outline: 1px solid red}'
        var styleTag = document.createElement('style')

        styleTag.innerHTML = styleContent
        document.head.appendChild(styleTag)
        return function removeStyle(){
            styleTag.parentNode.removeChild(styleTag)
        }
    }

    window.addEventListener('keydown', function(e){
        if(e.keyCode === KEY_CODE) {
            if(remove){
                remove()
                remove = null
            }else {
                remove = insertStyle()
            }
        }
    })
})();