rails，使用咖啡脚本出现语法错误 [英] rails, getting syntax error with coffee script

问题描述

我正在尝试使用 jquery ui 库在 rails 中执行自动完成功能.但是我不断收到语法错误语法错误:在线保留字函数"......"

i am trying to do an autocomplete feature in rails using the jquery ui library. however i keep getting syntax errors "Syntax Error: reserved word "function" on line ..."

这是我的课程.js.coffee 文件

this is my lessons.js.coffee file

jQuery ->

$(function() {
    function split( val ) {
        return val.split( /,s*/ );
    }
    function extractLast( term ) {
        return split( term ).pop();
    }

    $( "#lesson_tag_name" )
        // don't navigate away from the field on tab when selecting an item
        .bind( "keydown", function( event ) {
            if ( event.keyCode === $.ui.keyCode.TAB &&
                    $( this ).data( "autocomplete" ).menu.active ) {
                event.preventDefault();
            }
        })
        .autocomplete({
            source: $('#lesson_tag_name').data('autocomplete-source')
            },
            search: function() {
                // custom minLength
                var term = extractLast( this.value );
                if ( term.length < 2 ) {
                    return false;
                }
            },
            focus: function() {
                // prevent value inserted on focus
                return false;
            },
            select: function( event, ui ) {
                var terms = split( this.value );
                // remove the current input
                terms.pop();
                // add the selected item
                terms.push( ui.item.value );
                // add placeholder to get the comma-and-space at the end
                terms.push( "" );
                this.value = terms.join( ", " );
                return false;
            }
        });
});

我在某处在线阅读，我可以用 -> 替换单词 function我这样做了，我停止接收函数错误，但随后我收到其他语法错误，例如语法错误:在线保留字var"......"

i read online somewhere that i could replace the word function with -> i did that and i stopped receiving the function errors, but then i get other syntax errors such as "Syntax Error: reserved word "var" on line..."

我做错了吗?

推荐答案

只有第一行是coffeescript；其余的都是普通的javascript.

Only the first line is coffeescript; the rest is normal javascript.

尝试使用此转换器:

http://js2coffee.org/

$(function() {}); 变成 $ ->

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