window 系统里 chrome 浏览器一些实用的调试技巧_windows怎么选在控制台fetch

说明

某一天，我突然发现 chrome 浏览器竟是熟悉的陌生人，感觉好多操作都不知道，于是，我看了一些大佬写的笔记，自己把不会的一些整理了一下，记录起来，忘记的时候偶尔来看一看。

1、开发者工具里 Run Command

打开 Chrome 开发者工具，然后使用快捷键 Ctrl + Shift + P 打开命令菜单：

1.1 切换 chrome 主题

输入下面命令可以进行主题切换

• Switch to dark theme
• Switch to light theme

也可以输入 theme ，下面就会出现主题的切换，比如你现在是 light 主题，就会给你 dark 主题的切换选择

选了这之后，开发者工具就变成了 dark 主题

1.2 屏幕截图

• Capture full size screenshot：用于截取网页上所有内容的屏幕快照，包括可视窗口中未出现的所有内容
• Capture node screenshot：用于精确捕获 DOM 元素的内容

比如：我选择第一个命令 Capture full size screenshot

就会下载下来一张图片：可以看到这张图片，出现了页面未出现的所有内容

我们先选中这个 a 标签：

在使用第二个命令：

我们可以看到下载下来就是 a 标签这个部分的。

2、开发者工具里 Network

2.1 重新发送XHR请求

• 打开网络面板
• 点击 Fetch/XHR 按钮
• 选择重新发送的 XHR 请求
• 重发 Replay XHR

2.2 在控制台用 fetch 快速发起请求

• 选择重新发送的 XHR 请求
• 右键选择 copy 里的 Copy as fetch
• 粘贴到控制台
• 可以自己修改参数，回车执行

粘贴 Ctrl + v 到控制台执行：

你就发现调用了：

2.3 复制图片的Data URI

找到图片的 preview 然后右击选择 Copy image as data URI

下面链接就可以直接在浏览器上访问

data:image/svg+xml;base64,<?xml version="1.0" encoding="UTF-8"?>
<svg width="176px" height="172px" viewBox="0 0 176 172" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <title>编组 2备份 2</title>
    <defs>
        <radialGradient cx="38.1747213%" cy="86.0776601%" fx="38.1747213%" fy="86.0776601%" r="97.067379%" gradientTransform="translate(0.381747,0.860777),scale(0.855365,1.000000),rotate(-46.300512),translate(-0.381747,-0.860777)" id="radialGradient-1">
            <stop stop-color="#178F67" offset="0%"></stop>
            <stop stop-color="#31CC79" stop-opacity="0.55" offset="54.6847684%"></stop>
            <stop stop-color="#53E68D" stop-opacity="0.8" offset="100%"></stop>
        </radialGradient>
        <path d="M76.5669734,7.10542736e-15 L77.1322485,7.10542736e-15 L77.6317133,7.10542736e-15 L77.6317133,7.10542736e-15 L78.1408771,0.00258488427 L78.1408771,0.00258488427 L78.6596574,0.00531653925 L78.6596574,0.00531653925 L79.1879717,0.00906258891 L79.1879717,0.00906258891 L79.7257374,0.0138642228 L79.7257374,0.0138642228 L80.2728723,0.0197626306 L80.2728723,0.0197626306 L80.8292937,0.0267990018 L80.8292937,0.0267990018 L81.2053598,0.0321424584 L81.2053598,0.0321424584 L81.5854921,0.0380221872 L81.5854921,0.0380221872 L82.1632615,0.0478739881 L82.1632615,0.0478739881 L82.7500426,0.0590010511 L82.7500426,0.0590010511 L83.3457529,0.0714445656 L83.3457529,0.0714445656 L83.7478131,0.0804919445 L83.7478131,0.0804919445 L84.3582221,0.0952210775 L84.3582221,0.0952210775 L84.9773405,0.111376501 L84.9773405,0.111376501 L85.6050857,0.128999405 L85.6050857,0.128999405 L86.0283344,0.141583614 L86.0283344,0.141583614 L86.6702744,0.16174385 L86.6702744,0.16174385 L87.3206213,0.183481406 L87.3206213,0.183481406 L87.7588157,0.198869738 L87.7588157,0.198869738 L88.2006854,0.214989611 L88.2006854,0.214989611 L88.646206,0.231853231 L88.646206,0.231853231 L89.095353,0.249472801 L89.095353,0.249472801 L89.5481021,0.267860525 L89.5481021,0.267860525 L90.0044287,0.287028607 L90.0044287,0.287028607 L90.6955731,0.317270601 L90.6955731,0.317270601 L91.1607368,0.338442975 L91.1607368,0.338442975 L91.8650223,0.371748612 L91.8650223,0.371748612 L92.3388702,0.395001554 L92.3388702,0.395001554 L92.8161492,0.419108079 L92.8161492,0.419108079 L93.5384472,0.456895037 L93.5384472,0.456895037 L94.0241967,0.483188918 L94.0241967,0.483188918 L94.5132916,0.510379099 L94.5132916,0.510379099 L95.0057075,0.538477785 L95.0057075,0.538477785 L95.50142,0.567497179 L95.50142,0.567497179 L96.0004046,0.597449485 L96.0004046,0.597449485 L96.5026369,0.628346909 L96.5026369,0.628346909 L97.0080925,0.660201654 L97.0080925,0.660201654 L97.5167469,0.693025925 L97.5167469,0.693025925 L98.0285757,0.726831926 L98.0285757,0.726831926 L98.5435545,0.761631861 L98.5435545,0.761631861 C117.034398,2.0253048 121.931513,15.3414752 122.4526,16.9348664 L122.480007,17.0204228 L122.480007,17.0204228 L122.501293,17.0905166 L122.501293,17.0905166 L130.528463,17.527597 L130.528463,17.527597 C130.956829,17.527597 131.304088,17.8748563 131.304088,18.3032223 C131.304088,18.6102515 131.125693,18.8756143 130.866902,19.001311 C122.627285,23.459864 120.110054,32.5194451 121.589956,38.4207668 C122.066913,40.3227016 122.807951,41.9576385 123.632928,43.6857144 L124.154166,44.7734635 C126.06382,48.7676736 128.207925,53.6041208 128.558054,63.3380184 C129.341811,85.1272154 110.188775,104.710669 87.5256709,104.710669 L87.2776773,104.710768 L87.2776773,104.710768 L86.7483602,104.711559 L86.7483602,104.711559 L85.8710598,104.714228 L85.8710598,104.714228 L85.2306429,104.716996 L85.2306429,104.716996 L84.1866928,104.722631 L84.1866928,104.722631 L83.4351761,104.727377 L83.4351761,104.727377 L82.6392196,104.732913 L82.6392196,104.732913 L81.3619599,104.742701 L81.3619599,104.742701 L79.9847105,104.754268 L79.9847105,104.754268 L78.5074713,104.767614 L78.5074713,104.767614 L76.3822793,104.788178 L76.3822793,104.788178 L74.6717306,104.805677 L74.6717306,104.805677 L71.5986165,104.838796 L71.5986165,104.838796 L68.247753,104.876858 L68.247753,104.876858 L64.6191401,104.919864 L64.6191401,104.919864 L62.3086527,104.94804 L62.3086527,104.94804 L59.072463,104.988376 L59.072463,104.988376 L54.7772515,105.043245 L54.7772515,105.043245 L50.2042906,105.103058 L50.2042906,105.103058 L46.3459423,105.154467 L46.3459423,105.154467 L40.2251205,105.237512 L40.2251205,105.237512 L35.9223732,105.29683 L35.9223732,105.29683 L27.9648312,105.408249 L27.9648312,105.408249 L19.4629003,105.529357 L19.4629003,105.529357 L11.7422419,105.640875 L11.7422419,105.640875 L7.73192805,105.699303 L56.1964377,50.5871031 L56.635628,50.0864867 L56.635628,50.0864867 L57.0736267,49.5883461 L57.0736267,49.5883461 L57.5103344,49.0925508 L57.5103344,49.0925508 L59.6710229,46.644195 L59.6710229,46.644195 L60.0978937,46.1597356 L60.0978937,46.1597356 L60.5227766,45.6767094 L60.5227766,45.6767094 L60.9455719,45.1949862 C61.0158583,45.1148003 61.0860536,45.0346632 61.1561557,44.9545724 L61.5756332,44.474559 C61.6453542,44.3946418 61.7149778,44.3147654 61.784502,44.2349269 L62.2004376,43.7563303 L62.2004376,43.7563303 L62.6138875,43.2785153 C67.4225824,37.7080595 71.7034531,32.2705719 74.7450927,26.0348089 C78.1214028,16.4988117 74.6843141,9.38305492 71.1757692,5.07151589 C70.9048753,4.73862305 70.6335555,4.42244713 70.3649128,4.12316484 C69.1688678,2.59214492 69.9832221,0.0413893594 72.2608727,0.0413893594 C72.4464618,0.0413893594 72.6358217,0.0385210247 72.8289348,0.0348208586 L73.2697649,0.0259509195 C73.3691312,0.0240497295 73.4694324,0.0223224261 73.5706664,0.0210235721 L73.9912023,0.0159855363 L73.9912023,0.0159855363 L74.4220699,0.0115567163 L74.4220699,0.0115567163 L74.715014,0.00896292759 L74.715014,0.00896292759 L75.4671436,0.00382294169 L75.4671436,0.00382294169 L76.08898,0.00119436085 L76.08898,0.00119436085 L76.5669734,7.10542736e-15 L76.5669734,7.10542736e-15 Z" id="path-2"></path>
        <linearGradient x1="81.4682253%" y1="57.1884468%" x2="-8.23595123%" y2="79.1237607%" id="linearGradient-3">
            <stop stop-color="#FFFFFF" stop-opacity="0" offset="0%"></stop>
            <stop stop-color="#D6F056" offset="100%"></stop>
        </linearGradient>
        <path d="M56.1964377,50.5871031 C35.2204038,74.1922716 10.2554857,102.912753 0.779178886,113.701435 C-1.0463188,115.779747 0.723009731,117.742294 2.13706727,117.985398 C72.8364108,130.140028 95.2838946,96.8230809 100.284077,81.5928901 C107.125296,60.7550365 97.4590008,50.5871031 91.9885566,47.2713133 C73.4385958,36.0276614 59.6753666,46.6721256 56.1964377,50.5871031 Z" id="path-4"></path>
    </defs>
    <g id="控件" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <g id="logo" transform="translate(17.933154, 30.135279)">
            <g id="路径">
                <use fill="#31CC79" xlink:href="#path-2"></use>
                <use fill-opacity="0.600000024" fill="url(#radialGradient-1)" xlink:href="#path-2"></use>
            </g>
            <g id="Fill-12-Copy">
                <use fill="#93E65C" xlink:href="#path-4"></use>
                <use fill-opacity="0.75" fill="url(#linearGradient-3)" style="mix-blend-mode: overlay;" xlink:href="#path-4"></use>
            </g>
        </g>
    </g>
</svg>
1

2.4 页面不同時期的加载截图

选择 Capture Screenshots 获得页面加载的截图。

3、开发者工具里 Source

打开 Chrome 开发者工具，然后使用快捷键 Ctrl + P 打开文件：

3.1 快速切换文件

比如我们打开上面的 normalize.css 文件

3.2 在源代码中搜索

按住 Ctrl + Shift + f 进行搜索，这里不要把光标聚焦到源文件里面，不然出不来。

比：如搜索 mark 字段

3.3 源代码里跳转行数

按 ctrl + g，输入行数跳转

比如在上面的文件里跳转到第 5 行

3.4 通过 workspaces 实现编辑器功能

选择 Add folder to workspace，或者只是把整个工程文件夹拖放入Developer Tool，然后同意。就可以在开发者工具里编辑文件保存了。

3.5 添加条件断点

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      const blogs = [
        {
          name: "kaimo666",
          value: 666,
        },
        {
          name: "kaimo777",
          value: 777,
        },
        {
          name: "kaimo888",
          value: 888,
        },
      ];

      blogs.forEach((v) => {
        console.log(v.name, v.value);
      });
    </script>
  </body>
</html>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

我们在 27 行打个断点，重新执行这段代码的时候，会停三下

我们在 27 行，右击选着编辑断点

输入条件： v.name === "kaimo888"，然后失焦就行

重新执行这段代码的时候，只有满足条件的才会停

4、开发者工具里 Console

4.1 复制控制台的变量

复制函数不是由 ECMAScript 定义的，而是由 Chrome 提供的。

copy(location)
1

4.2 用表格的形式输出对象数组

Chrome 提供了一个表格函数 table，可以将对象数组制成表格。

let kaimoArr = [
	{
		name: "kaimo666",
		value: 666
	},{
		name: "kaimo777",
		value: 777
	},{
		name: "kaimo888",
		value: 888
	},
];
table(kaimoArr)
1
2
3
4
5
6
7
8
9
10
11
12
13

4.3 控制台里 $ 相关的简写命令

需要注意的是：这个 $ 跟 jQuery 的不是一回事，如果页面有引入 jQuery，那么这个 $ 就表示 jQuery。

• $()：document.querySelector() 的简写，返回第一个和css选择器匹配的元素。
• $$()：document.querySelectorAll() 的简写，返回一个和css选择器匹配的元素数组。
• $0-$4：依次返回五个最近你在元素面板选择过的DOM元素的历史记录，$0 是最新的记录，以此类推。
• $_：引用上一次操作的结果，不用每次都复制一遍

'kaimo'.split('')
$_
1
2

5、开发者工具里 Elements

5.1 切换样式颜色格式

比如：下面的颜色显示格式是 rgb 的，我们可以按住 shift 点击颜色块进行切换。

切换之后

CSS颜色设置（6种方法）：

5.2 存储 DOM 元素到全局临时变量中

比如我要存储 ReactApp 这个 dom 元素，我们可以右键这个元素，找到最下那个 Store as global variable。

选择之后就会出现一个变量，供你使用，比如这里的 temp1 就是该 dom 元素：

5.3 一键展开 DOM 下面的所有元素

我们普通展开时只会展开它的子节点，如果我们想全部展开，可以按住 alt 在点击展开即可。

全部展开效果：

拓展阅读

• chrome devtools：commandline-api
• 12个最好用的Chrome浏览器调试技巧
• Chrome开发者工具的11个使用技巧
• 11+ chrome高级调试技巧，学会效率直接提升666%
• 【译】像高级前端开发人员一样使用Chrome DevTools
• 【译】15个必须知道的chrome开发者技巧