如何使css文件按需加载,如何实现在项目中按需引入css文件?

将import 换成 require就行了

if (!isIE9) {

require('swiper/dist/css/swiper.min.css')

} else {

require('swiper2/dist/idangerous.swiper.css')

}

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为什么被踩了,亲测可行啊,原理上,不管是import还是require,最后都转成webpack_require。

main.js 随机加载css

var r = Math.random();

if(r>0.5) {

require('./assets/css1.css')

}else {

require('./assets/css2.css')

}

css1:

body {

background-color: #2C3E50;

}

css2:

body {

background-color: cadetblue;

}

效果

bVbin8M?w=581&h=667

刷新一下

bVbin8W?w=582&h=578

两个css都会打包啊,不用考虑webpack是否识别navigator啊,它才不管你代码写得对不对呢

function isIe9() {

return navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/9./i)=="9."

}

if(isIe9()) {

require('./assets/css1.css')

}else {

require('./assets/css2.css')

}

bVbiomJ?w=838&h=671