JAVASCRIPT
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Background Color Through Input

Select the desired color to make the background of that particular color.

CODE: 
                    
function change(){
let c = document.getElementById("selector").value;
document.getElementById("colorselector")
.style.backgroundColor = c;
}


Lcm And Hcf

Select the desired Number whom you want to find LCM and HCF.


CODE: 
function idk() {
    var a = document.getElementById("n1").value;
    var b = document.getElementById("n2").value;
    x = [a,b];
    x.sort();
    var hcf 
    var r
    if(x[1]%x[0]==0){
        hcf = x[0];
        
    }else{
        r = x[1] % x[0];
        while(r!=0){
            x[1] = x[0];
            x[0] = r;
            r = x[1] % x[0];
        hcf = x[0];
        
        }
    }