網站顯示時,有時需要限制多少文字長度,然後後面加上…的需求
以下是參考stackoverflow使用ng來解決 :
擴充一個filter :
angular.module('ng').filter('cut', function () {
        return function (value, wordwise, max, tail) {
            if (!value) return '';
            max = parseInt(max, 10);
            if (!max) return value;
            if (value.length <= max) return value;
            value = value.substr(0, max);
            if (wordwise) {
                var lastspace = value.lastIndexOf(' ');
                if (lastspace != -1) {
                  //Also remove . and , so its gives a cleaner result.
                  if (value.charAt(lastspace-1) == '.' || value.charAt(lastspace-1) == ',') {
                    lastspace = lastspace - 1;
                  }
                  value = value.substr(0, lastspace);
                }
            }
            return value + (tail || ' …');
        };
    });  使用上 : {{some_text | cut:true:100:' ...'}}
參考 : http://stackoverflow.com/questions/18095727/limit-the-length-of-a-string-with-angularjs
