shave off a few bytes with forEach

Author: yyx990803

src/compiler.js

@@ -126,9 +126,7 @@ function Compiler (vm, options) {
     compiler.compile(el, true)
 
     // bind deferred directives (child components)
-    for (var i = 0, l = compiler.deferred.length; i < l; i++) {
-        compiler.bindDirective(compiler.deferred[i])
-    }
+    compiler.deferred.forEach(compiler.bindDirective, compiler)
 
     // extract dependencies for computed properties
     compiler.parseDeps()
@@ -288,7 +286,7 @@ CompilerProto.compile = function (node, root) {
             }
 
         // v-with has 2nd highest priority
-        } else if (!root && ((withKey = utils.attr(node, 'with')) || componentCtor)) {
+        } else if (root !== true && ((withKey = utils.attr(node, 'with')) || componentCtor)) {
 
             directive = Directive.parse('with', withKey || '', compiler, node)
             if (directive) {
@@ -369,10 +367,7 @@ CompilerProto.compileNode = function (node) {
     }
     // recursively compile childNodes
     if (node.childNodes.length) {
-        var nodes = slice.call(node.childNodes)
-        for (i = 0, j = nodes.length; i < j; i++) {
-            this.compile(nodes[i])
-        }
+        slice.call(node.childNodes).forEach(this.compile, this)
     }
 }
 
@@ -387,7 +382,7 @@ CompilerProto.compileTextNode = function (node) {
 
     for (var i = 0, l = tokens.length; i < l; i++) {
         token = tokens[i]
-        directive = null
+        directive = partialNodes = null
         if (token.key) { // a binding
             if (token.key.charAt(0) === '>') { // a partial
                 partialId = token.key.slice(1).trim()
@@ -413,6 +408,8 @@ CompilerProto.compileTextNode = function (node) {
 
         // insert node
         node.parentNode.insertBefore(el, node)
+
+        // bind directive
         if (directive) {
             this.bindDirective(directive)
         }
@@ -421,10 +418,7 @@ CompilerProto.compileTextNode = function (node) {
         // will change from the fragment to the correct parentNode.
         // This could affect directives that need access to its element's parentNode.
         if (partialNodes) {
-            for (var j = 0, k = partialNodes.length; j < k; j++) {
-                this.compile(partialNodes[j])
-            }
-            partialNodes = null
+            partialNodes.forEach(this.compile, this)
         }
 
     }

src/deps-parser.js

@@ -37,8 +37,7 @@ module.exports = {
     parse: function (bindings) {
         utils.log('\nparsing dependencies...')
         Observer.shouldGet = true
-        var i = bindings.length
-        while (i--) { catchDeps(bindings[i]) }
+        bindings.forEach(catchDeps)
         Observer.shouldGet = false
         utils.log('\ndone.')
     }

src/directive.js

@@ -58,8 +58,7 @@ function Directive (definition, expression, rawKey, compiler, node) {
     var filterExps = this.expression.slice(rawKey.length).match(FILTERS_RE)
     if (filterExps) {
         this.filters = []
-        var i = 0, l = filterExps.length, filter
-        for (; i < l; i++) {
+        for (var i = 0, l = filterExps.length, filter; i < l; i++) {
             filter = parseFilter(filterExps[i], this.compiler)
             if (filter) this.filters.push(filter)
         }

src/directives/repeat.js

@@ -25,10 +25,7 @@ var mutationHandlers = {
     },
 
     unshift: function (m) {
-        var i, l = m.args.length
-        for (i = 0; i < l; i++) {
-            this.buildItem(m.args[i], i)
-        }
+        m.args.forEach(this.buildItem, this)
     },
 
     shift: function () {
@@ -144,9 +141,7 @@ module.exports = {
 
         // create child-vms and append to DOM
         if (collection.length) {
-            for (var i = 0, l = collection.length; i < l; i++) {
-                this.buildItem(collection[i], i)
-            }
+            collection.forEach(this.buildItem, this)
             if (!init) this.changed()
         }
     },