Fix partial numbers being detected as numbers

src/generators/dom/visitors/attributes/addComponentAttributes.js

@@ -28,7 +28,7 @@ export default function addComponentAttributes ( generator, node, local ) {
 
 				if ( value.type === 'Text' ) {
 					// static attributes
-					const result = isNaN( parseFloat( value.data ) ) ? JSON.stringify( value.data ) : value.data;
+					const result = String( parseFloat( value.data ) ) !== value.data ? JSON.stringify( value.data ) : value.data;
 					local.staticAttributes.push({
 						name: attribute.name,
 						value: result

test/generator/attribute-partial-number/Component.html

@@ -0,0 +1 @@
+<p data-value="{{value}}"></p>

test/generator/attribute-partial-number/_config.js

@@ -0,0 +1,3 @@
+export default {
+    html: '<p data-value="10px"></p>'
+};

test/generator/attribute-partial-number/main.html

@@ -0,0 +1,11 @@
+<Component value="10px"/>
+
+<script>
+    import Component from './Component.html';
+
+    export default {
+        components: {
+            Component
+        }
+    };
+</script>