javascript - fetch 可以同步请求数据吗？

fetch(userLoginUrl, { {代码...}

From [JavaScriptdiscussion group] 2017-04-11 11:13:55 0  3  1483

javascript - 使用js如何巧妙的用0补足指定位数？

例如：指定返回字符串长度是4，操作数是5，如何将这个5，变为'0005'返回 谢谢大家的回答！回答里有好几种思路，受益匪浅，再次感谢大家的回答，谢谢！

From [JavaScriptdiscussion group] 2017-04-10 15:01:24 0  12  1483

javascript - vue reports error using videojs+videojs-contrib-hls

When I use videojs directly in Vue, I get an error. The video format is incorrect. Then I get the error after ...

From [JavaScriptdiscussion group] 2017-06-28 09:26:37 0  2  1482

请问：两个for循环代表什么意思和arr.length和str.length各指什么长度和function checkOtherChar(str)

问题1：function checkOtherChar(str) 与function checkOtherChar()这个区别是？为什么在里面加了str?问题2：麻烦帮我详细解释下两个for循环代表什么意思和a...

From [JavaScriptdiscussion group] 2017-02-25 21:22:26 0  1  1482

javascript - 如何用webpack将css合并打包成一个单独的css，或者将css中同样的模块独立出来呢？

如何用webpack将css合并打包成一个单独的css，或者将css中同样的模块独立出来呢？ 因为网站可能有很多个界面，总不可能公共的css（bootstrap……）每个界面都要加载一次吧 我是说多个界面，如果把css打...

From [JavaScriptdiscussion group] 2017-04-11 11:37:05 0  2  1480

javascript - How does Vue prevent any tab page from going back to the first tab after refreshing it?

Like the example above, on the initial trainer page, when I click on the training ground page and browse the t...

From [JavaScriptdiscussion group] 2017-05-18 11:02:28 0  3  1477

javascript - How to solve the error Cannot set property 'value' of null when executing a js function?

{Code...} Why can’t I write startCount() directly on line 13? The error message Uncaught TypeError: Cannot set...

From [JavaScriptdiscussion group] 2017-06-12 09:25:38 0  1  1475

javascript - 前端最好学习了解哪个后台语言？PHP/JAVA/还是.NET?

作为一个前端，大家认为最好学习了解哪种后端语言？主要从以下2个角度考虑： 1.更有利于巩固前端知识，对网站有系统整体的认识2.更有利于未来的职业发展 暂时不考虑语言学习的复杂程度和花费时间多少，是学习PHP...

From [JavaScriptdiscussion group] 2017-04-10 16:01:52 0  25  1475

javascript - video.js 视频字幕跨域调用拒绝访问，如何解决？

上面截图的红框中得字幕src的地址如果是跨域的话无法调用，请问各位前端应该如何处理？或者有什么其他的更好的解决方案。由于要改造视频的皮肤，所以使用video.js，但是video.js优化了移动端，不支持皮肤改造，所.....

From [JavaScriptdiscussion group] 2017-04-10 15:57:11 0  2  1475

The return value of the getDate() function on Sunday

Shouldn’t the value of Sunday be 0, teacher?

From [JavaScriptdiscussion group] 2018-07-04 09:55:26 0  1  1474

What's the difference?

    add=function(){}     function add(){}

From [JavaScriptdiscussion group] 2017-12-06 17:00:30 0  2  1474

javascript - chrome upload file 出现 fakepath，请解决方案

用chrome上传图片，在浏览器的开发者模式中，看到图片地址被改成file:\c:\fakepathxxx.jpg了，网上搜了很多，都说的很模糊，而且没能解决这个问题，哪位大神帮忙解决一下，拜谢！

From [JavaScriptdiscussion group] 2017-04-11 11:51:41 0  3  1474

Questions about x-=y in this lesson

I checked on the w3c official website and found that x-=y is equivalent to x = x-y; not x = y - x as the teach...

From [JavaScriptdiscussion group] 2019-01-02 20:36:34 0  3  1471

javascript - How does js determine that the input value is a number, not less than or equal to 0, without using alert, but using red font on the same line to prompt the user

How does js determine that the input value is a number, not less than or equal to 0, and can be a decimal. If ...

From [JavaScriptdiscussion group] 2017-06-28 09:27:53 0  4  1471

javascript - swiper.js How to dynamically set the height of swiper-wrapper according to the content height of swiper-slide

{Code...} This is how it is written now, but it only works after the first switch and then setting the height ...

From [JavaScriptdiscussion group] 2017-05-19 10:45:57 0  1  1470