javascript - IONIC2 - Syntax Error when ionic serve -
i don't know did wrong, says syntax error codes copy pasted official ionic2 docs. syntaxerror: d:/manson/arts/ionic/ionictodo2/app/pages/list/list.js : unexpected token (14:23) while parsing file: d:\manson\arts\ionic\ionictodo2\app\pages\list\list.js for full code click here . constructor(nav: navcontroller) { it looks you're using types typescript, while code in plain javascript file (.js). nav: navcontroller declares nav of type navcontroller . when run ionic serve , ionic runs webpack compile , package code. since not valid js syntax, fails. ionic 2 based on angular 2 , written in typescript . while angular 2 can used plain javascript, undocumented, , recommend using typescript when developing angular 2 applications. when create new ionic 2 project, should use --ts flag if want project in typescript. command should be: ionic start myionic2project --v2 --ts after that, copy-pasting ionic 2 tutorials should work you.