webpack提取公共代码。

var webpack=require(‘webpack‘)
var path=require(‘path‘)

module.exports={
entry:{
‘pageA‘:‘./src/pageA‘,
‘pageB‘:‘./src/pageB‘,
‘vendor‘:[‘lodash‘]

},
output:{
path:path.resolve(__dirname, ‘./dist‘),
filename:‘[name].bundle.js‘,
    chunkFilename: "[name].chunk.js"
},
plugins:[
   new webpack.optimize.CommonsChunkPlugin({
        name:‘common‘,
        minChunks:2 //重复出现
    }),
]

}