use className instead of setAttribute in IE9 (fix #1946)

yyx990803 · yyx990803 · commit 747a628f57bd · 2015-12-01T12:01:18.000-05:00
diff --git a/src/util/dom.js b/src/util/dom.js
@@ -176,7 +176,7 @@ export function addClass (el, cls) {
   } else {
     var cur = ' ' + (el.getAttribute('class') || '') + ' '
     if (cur.indexOf(' ' + cls + ' ') < 0) {
-      el.setAttribute('class', (cur + cls).trim())
+      el.className = (cur + cls).trim()
     }
   }
 }
@@ -197,7 +197,7 @@ export function removeClass (el, cls) {
     while (cur.indexOf(tar) >= 0) {
       cur = cur.replace(tar, ' ')
     }
-    el.setAttribute('class', cur.trim())
+    el.className = cur.trim()
   }
   if (!el.className) {
     el.removeAttribute('class')

Original file line number	Diff line number	Diff line change
`@@ -176,7 +176,7 @@ export function addClass (el, cls) {`
`176`	`176`	`} else {`
`177`	`177`	`var cur = ' ' + (el.getAttribute('class') \|\| '') + ' '`
`178`	`178`	`if (cur.indexOf(' ' + cls + ' ') < 0) {`
`179`		`- el.setAttribute('class', (cur + cls).trim())`
	`179`	`+ el.className = (cur + cls).trim()`
`180`	`180`	`}`
`181`	`181`	`}`
`182`	`182`	`}`
`@@ -197,7 +197,7 @@ export function removeClass (el, cls) {`
`197`	`197`	`while (cur.indexOf(tar) >= 0) {`
`198`	`198`	`cur = cur.replace(tar, ' ')`
`199`	`199`	`}`
`200`		`- el.setAttribute('class', cur.trim())`
	`200`	`+ el.className = cur.trim()`
`201`	`201`	`}`
`202`	`202`	`if (!el.className) {`
`203`	`203`	`el.removeAttribute('class')`