How element-ui input passes in custom parameters while retaining the default parameters in the @ change event

<el-input-number class="ipt"
     v-model="formData.roomAreaSelfuse.value"
     :controls="false"
     :precision="2"
     controls-position="right"
     @change="countTotalArea("roomAreaSelfuse")"></el-input-number>

for example, the @ change event on the document has default parameters, and the default parameters are the old value and the new value, respectively. Now I want to input this custom parameter while keeping the default parameter, which equals to three parameters in my countTotalArea method, oldval,newval and name. How to solve it? the methods that have seen scope on the Internet and so on are not effective.

Element-ui vue.js javascript html5
May.31,2022

@ change= "countTotalArea ($event,'roomAreaSelfuse')"

The default parameter @ change on the

document is the value of input. There is no such thing as
@ change= "countTotalArea ($event,'roomAreaSelfuse')"

. 
countTotalArea(val,str) {
    //  roomAreaSelfuse
    // val input  str
}

clipboard.png

change should have only one default callback parameter, which can be written as 

@change="val => countTotalArea(val, 'roomAreaSelfuse')"

of course, multiple callback parameters are written in the same way 

 @change="(oldval, newval) => countTotalArea(oldval, newval, 'roomAreaSelfuse')"

@ change= "((newVal, oldVal) = > {countTotalArea (newVal, oldVal, 'roomAreaSelfuse')})

Previous: The problem between tornado setcookie and domain

Next: As soon as vue refreshes, it returns to the login page.

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1be55dc-31786.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1be55dc-31786.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?