diff --git a/app/src/main/assets/help/ruleHelp.md b/app/src/main/assets/help/ruleHelp.md
index e6c1643a4..554509612 100644
--- a/app/src/main/assets/help/ruleHelp.md
+++ b/app/src/main/assets/help/ruleHelp.md
@@ -152,5 +152,4 @@ let options = {
 ```
 
 * 购买操作
-> 返回购买链接，可直接填写链接或者JavaScript  
-> 可用变量 book chapter java(不支持AnalyzeRule函数) source
\ No newline at end of file
+> 可直接填写链接或者JavaScript，如果执行结果是字符串链接将会自动打开浏览器
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceAdapter.kt b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceAdapter.kt
index e94f8671b..8859584f0 100644
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceAdapter.kt
@@ -1,7 +1,6 @@
 package io.legado.app.ui.book.changesource
 
 import android.content.Context
-import android.graphics.Color
 import android.os.Bundle
 import android.view.View
 import android.view.ViewGroup
@@ -14,7 +13,10 @@ import io.legado.app.base.adapter.DiffRecyclerAdapter
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.data.entities.SearchBook
 import io.legado.app.databinding.ItemChangeSourceBinding
-import io.legado.app.utils.*
+import io.legado.app.utils.getCompatColor
+import io.legado.app.utils.gone
+import io.legado.app.utils.invisible
+import io.legado.app.utils.visible
 import splitties.init.appCtx
 import splitties.views.onLongClick
 
diff --git a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceViewModel.kt
index a886df99e..ed4ba5443 100644
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceViewModel.kt
@@ -83,27 +83,23 @@ open class ChangeBookSourceViewModel(application: Application) : BaseViewModel(a
             searchCallback = null
         }
     }.map {
-        searchBooks.sortedWith(object : Comparator<SearchBook> {
-            override fun compare(o1: SearchBook, o2: SearchBook): Int {
-                val o1bs = SourceConfig.getBookScore(o1.origin, o1.name, o1.author)
-                val o2bs = SourceConfig.getBookScore(o2.origin, o2.name, o2.author)
-                if (o1bs - o2bs > 0) {
-                    return -1
-                } else if (o1bs - o2bs < 0) {
-                    return 1
-                } else {
+        searchBooks.sortedWith { o1, o2 ->
+            val o1bs = SourceConfig.getBookScore(o1.origin, o1.name, o1.author)
+            val o2bs = SourceConfig.getBookScore(o2.origin, o2.name, o2.author)
+            when {
+                o1bs - o2bs > 0 -> -1
+                o1bs - o2bs < 0 -> 1
+                else -> {
                     val o1ss = SourceConfig.getSourceScore(o1.origin)
                     val o2ss = SourceConfig.getSourceScore(o2.origin)
-                    if (o1ss - o2ss > 0) {
-                        return -1
-                    } else if (o1ss - o2ss < 0) {
-                        return 1
-                    } else {
-                        return o1.originOrder - o2.originOrder
+                    when {
+                        o1ss - o2ss > 0 -> -1
+                        o1ss - o2ss < 0 -> 1
+                        else -> o1.originOrder - o2.originOrder
                     }
                 }
             }
-        })
+        }
     }.flowOn(IO)
 
     @Volatile
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
index 7fcab742b..81edc9ea7 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
@@ -36,6 +36,7 @@ import io.legado.app.lib.dialogs.selector
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.model.ReadAloud
 import io.legado.app.model.ReadBook
+import io.legado.app.model.analyzeRule.AnalyzeRule
 import io.legado.app.receiver.TimeBatteryReceiver
 import io.legado.app.service.BaseReadAloudService
 import io.legado.app.ui.about.AppLogDialog
@@ -962,31 +963,41 @@ class ReadBookActivity : BaseReadBookActivity(),
     }
 
     override fun payAction() {
-        Coroutine.async(this) {
-            val book = ReadBook.book ?: throw NoStackTraceException("no book")
+        ReadBook.book?.let { book ->
+            if (book.isLocalBook()) return
             val chapter = appDb.bookChapterDao.getChapter(book.bookUrl, ReadBook.durChapterIndex)
-                ?: throw NoStackTraceException("no chapter")
-            val source = ReadBook.bookSource ?: throw NoStackTraceException("no book source")
-            val payAction = source.getContentRule().payAction
-            if (payAction.isNullOrEmpty()) {
-                throw NoStackTraceException("no pay action")
-            }
-            JsUtils.evalJs(payAction) {
-                it["java"] = source
-                it["source"] = source
-                it["book"] = book
-                it["chapter"] = chapter
-            }
-        }.onSuccess {
-            if (it.isNotBlank()) {
-                startActivity<WebViewActivity> {
-                    putExtra("title", getString(R.string.chapter_pay))
-                    putExtra("url", it)
-                    IntentData.put(it, ReadBook.bookSource?.getHeaderMap(true))
+            if (chapter == null) {
+                toastOnUi("no chapter")
+                return
+            }
+            alert(R.string.chapter_pay) {
+                setMessage(chapter.title)
+                yesButton {
+                    Coroutine.async {
+                        val source = ReadBook.bookSource ?: throw NoStackTraceException("no book source")
+                        val payAction = source.getContentRule().payAction
+                        if (payAction.isNullOrEmpty()) {
+                            throw NoStackTraceException("no pay action")
+                        }
+                        val analyzeRule = AnalyzeRule(book, source)
+                        analyzeRule.setBaseUrl(chapter.url)
+                        analyzeRule.chapter = chapter
+                        analyzeRule.evalJS(payAction).toString()
+                    }.onSuccess {
+                        if (it.isNotBlank()) {
+                            startActivity<WebViewActivity> {
+                                putExtra("title", R.string.chapter_pay)
+                                putExtra("url", it)
+                                IntentData.put(it, ReadBook.bookSource?.getHeaderMap(true))
+                            }
+                        }
+                    }.onError {
+                        AppLog.putDebug(it.localizedMessage)
+                        toastOnUi(it.localizedMessage)
+                    }
                 }
+                noButton()
             }
-        }.onError {
-            toastOnUi(it.localizedMessage)
         }
     }