minor performance optimization

Connormiha · Connormiha · commit 534c7a70bdac · 2016-09-04T18:24:30.000+03:00
diff --git a/js/md5.js b/js/md5.js
@@ -164,7 +164,8 @@
   function binl2rstr (input) {
     var i
     var output = ''
-    for (i = 0; i < input.length * 32; i += 8) {
+    var length32 = input.length * 32
+    for (i = 0; i < length32; i += 8) {
       output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF)
     }
     return output
@@ -181,7 +182,8 @@
     for (i = 0; i < output.length; i += 1) {
       output[i] = 0
     }
-    for (i = 0; i < input.length * 8; i += 8) {
+    var length8 = input.length * 8
+    for (i = 0; i < length8; i += 8) {
       output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32)
     }
     return output

Original file line number	Diff line number	Diff line change
`@@ -164,7 +164,8 @@`
`164`	`164`	`function binl2rstr (input) {`
`165`	`165`	`var i`
`166`	`166`	`var output = ''`
`167`		`- for (i = 0; i < input.length * 32; i += 8) {`
	`167`	`+ var length32 = input.length * 32`
	`168`	`+ for (i = 0; i < length32; i += 8) {`
`168`	`169`	`output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF)`
`169`	`170`	`}`
`170`	`171`	`return output`
`@@ -181,7 +182,8 @@`
`181`	`182`	`for (i = 0; i < output.length; i += 1) {`
`182`	`183`	`output[i] = 0`
`183`	`184`	`}`
`184`		`- for (i = 0; i < input.length * 8; i += 8) {`
	`185`	`+ var length8 = input.length * 8`
	`186`	`+ for (i = 0; i < length8; i += 8) {`
`185`	`187`	`output[i >> 5] \|= (input.charCodeAt(i / 8) & 0xFF) << (i % 32)`
`186`	`188`	`}`
`187`	`189`	`return output`