/TypeScript/Uncaught TypeError: Cannot read property 'value' of undefined at Object.onChange

Uncaught TypeError: Cannot read property 'value' of undefined at Object.onChange

var x=document.form1.n1.value;
var y=document.form1.n2.value;
var z=document.form1.n3.value;
function verif(x,y,z){
    if (isNaN(x)|| isNaN(y) || isNaN(z))){
        alert("Verifier les champs de saisie");
        return false;
    }
    else { return true}
}
function compar(){
if(verif(x,y,z)){ 
    if (x==z==y){
    alert("les trois variables sont identiques");
}if ((x==z) || (z==y) || (x==y)){
    alert("Deux variables sont de valeurs égales");}
else{
        alert("les trois variables sont différentes");}}}

Similar codes

4 votes192 views1 answer
How to break out of setinterval
TypeScript
1 vote247 views1 answer
CLIENT MISSING INTENTS discord
TypeScript
0 vote222 views1 answer
React Draft Wysiwyg typescript
TypeScript
0 vote217 views1 answer
Fonts @import vs link
TypeScript
0 vote227 views2 answers
List of continents
TypeScript
9 votes242 views2 answers
Delete all child elements jquery
TypeScript
0 vote223 views1 answer
ExtractElementByIdFromString(HTMLString, IdString)
TypeScript
1 vote224 views1 answer
React-draggable disable
TypeScript
1 vote176 views1 answer
Why is a tree set sorted
TypeScript
6 votes225 views1 answer
An unhandled exception occurred: Cannot find module '@angular-devkit/build-angular/package.json'
TypeScript