[refactor] change const and let to var for compatibility

Author: zombieFox

src/js/helper.js

@@ -666,14 +666,14 @@ var helper = (function(){
 };
 
 convertColor.rgb.hsl=function(rgb){
-constr=rgb[0]/255;
-constg=rgb[1]/255;
-constb=rgb[2]/255;
-constmin=Math.min(r,g,b);
-constmax=Math.max(r,g,b);
-constdelta=max-min;
-leth;
-lets;
+varr=rgb[0]/255;
+varg=rgb[1]/255;
+varb=rgb[2]/255;
+varmin=Math.min(r,g,b);
+varmax=Math.max(r,g,b);
+vardelta=max-min;
+varh;
+vars;
 
 if(max===min){
 h=0;
@@ -683,81 +683,43 @@ var helper = (function(){
 h=2+(b-r)/delta;
 }elseif(b===max){
 h=4+(r-g)/delta;
-}
+};
 
 h=Math.min(h*60,360);
 
 if(h<0){
 h+=360;
-}
+};
 
-constl=(min+max)/2;
+varl=(min+max)/2;
 
 if(max===min){
 s=0;
 }elseif(l<=0.5){
 s=delta/(max+min);
 }else{
 s=delta/(2-max-min);
-}
+};
 
 return[h,s*100,l*100];
 };
 
-convertColor.rgb.lab=function(rgb){
-constxyz=convertColor.rgb.xyz(rgb);
-letx=xyz[0];
-lety=xyz[1];
-letz=xyz[2];
-
-x/=95.047;
-y/=100;
-z/=108.883;
-
-x=x>0.008856 ? (x**(1/3)) : (7.787*x)+(16/116);
-y=y>0.008856 ? (y**(1/3)) : (7.787*y)+(16/116);
-z=z>0.008856 ? (z**(1/3)) : (7.787*z)+(16/116);
-
-constl=(116*y)-16;
-consta=500*(x-y);
-constb=200*(y-z);
-
-return[l,a,b];
-};
-
-convertColor.rgb.xyz=function(rgb){
-letr=rgb[0]/255;
-letg=rgb[1]/255;
-letb=rgb[2]/255;
-
-// Assume sRGB
-r=r>0.04045 ? (((r+0.055)/1.055)**2.4) : (r/12.92);
-g=g>0.04045 ? (((g+0.055)/1.055)**2.4) : (g/12.92);
-b=b>0.04045 ? (((b+0.055)/1.055)**2.4) : (b/12.92);
-
-constx=(r*0.4124)+(g*0.3576)+(b*0.1805);
-consty=(r*0.2126)+(g*0.7152)+(b*0.0722);
-constz=(r*0.0193)+(g*0.1192)+(b*0.9505);
-
-return[x*100,y*100,z*100];
-};
-
 convertColor.rgb.hex=function(args){
-constinteger=((Math.round(args[0])&0xFF)<<16)+
+varinteger=((Math.round(args[0])&0xFF)<<16)+
 ((Math.round(args[1])&0xFF)<<8)+
 (Math.round(args[2])&0xFF);
 
-conststring=integer.toString(16).toUpperCase();
-return'000000'.substring(string.length)+string;
+varstring=integer.toString(16).toUpperCase();
+return"000000".substring(string.length)+string;
 };
 
 convertColor.hsl.rgb=function(hsl){
-consth=hsl[0]/360;
-consts=hsl[1]/100;
-constl=hsl[2]/100;
-lett2;
-lett3;
-letval;
+varh=hsl[0]/360;
+vars=hsl[1]/100;
+varl=hsl[2]/100;
+vart2;
+vart3;
+varval;
 
 if(s===0){
 val=l*255;
@@ -770,10 +732,10 @@ var helper = (function(){
 t2=l+s-l*s;
 }
 
-constt1=2*l-t2;
+vart1=2*l-t2;
 
-constrgb=[0,0,0];
-for(leti=0;i<3;i++){
+varrgb=[0,0,0];
+for(vari=0;i<3;i++){
 t3=h+1/3*-(i-1);
 if(t3<0){
 t3++;
@@ -800,23 +762,23 @@ var helper = (function(){
 };
 
 convertColor.hex.rgb=function(args){
-constmatch=args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i);
+varmatch=args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i);
 if(!match){
 return[0,0,0];
 }
 
-letcolorString=match[0];
+varcolorString=match[0];
 
 if(match[0].length===3){
-colorString=colorString.split('').map(char=>{
+colorString=colorString.split("").map(function(char){
 returnchar+char;
-}).join('');
+}).join("");
 }
 
-constinteger=parseInt(colorString,16);
-constr=(integer>>16)&0xFF;
-constg=(integer>>8)&0xFF;
-constb=integer&0xFF;
+varinteger=parseInt(colorString,16);
+varr=(integer>>16)&0xFF;
+varg=(integer>>8)&0xFF;
+varb=integer&0xFF;
 
 return[r,g,b];
 };