javascript - KnockoutJS data-bind optionsCaption -

var vm = {    weatherid: ko.observable(),    weatherconditions: [{      id: '1',      name: 'sunny'    }, {      id: '2',      name: 'rainy'    }, {      id: '3',      name: 'cloudy'    }, {      id: '4',      name: 'snowy'    }]  };    ko.applybindings(vm);

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.1.0/knockout-min.js"></script>  <select data-bind="options: weatherconditions,     value: weatherid,   optionstext:'name',  optionscaption: 'select today weather'">  </select>

i have ko data bind snippet want set optionscaption read "select today's weather". wasn't able inset apostrophe in middle - need help.

escape apostrophe backslash \

optionscaption: 'select today\'s weather'">

var vm = {    weatherid: ko.observable(),    weatherconditions: [{      id: '1',      name: 'sunny'    }, {      id: '2',      name: 'rainy'    }, {      id: '3',      name: 'cloudy'    }, {      id: '4',      name: 'snowy'    }]  };    ko.applybindings(vm);

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.1.0/knockout-min.js"></script>  <select data-bind="options: weatherconditions,     value: weatherid,   optionstext:'name',  optionscaption: 'select today\'s weather'">  </select>