如何在ace编辑器中检测换行事件？

Question

我正在尝试在ace编辑器中捕获换行事件。每次用户按下输入行更改，console.log显示当前行号。我试图执行以下代码。

editor.getSession().getRowLength().on('change', function(event) {
    if (lineno ==1){
        //execute abc}
    else if (lineno==2){
        //execute xyz}
});

我收到以下错误

tryit-ide.js:20 Uncaught TypeError: editor.getSession(...).getRowLength(...).on is not a function
at tryit-ide.js:20
at setUp (arch_ace-editor.js?hash=d1163619d62832acc5c961ddb94093c49630a447:78)
at callback (arch_ace-editor.js?hash=d1163619d62832acc5c961ddb94093c49630a447:98)
at arch_ace-editor.js?hash=d1163619d62832acc5c961ddb94093c49630a447:111
at XMLHttpRequest.request.onreadystatechange (arch_ace-editor.js?hash=d1163619d62832acc5c961ddb94093c49630a447:53)

谢谢。

Answer 1

错误只表示您要在数字上添加事件侦听器。尝试

editor.session.on('change', function(delta) {
     var lineno = delta.start.row
    if (lineno ==1){
        //execute abc}
    else if (lineno==2){
        //execute xyz}
});