angular.js - angularjs如何在ng-repeat过程中控制字符串长度超过指定长度后面内容以省略号显示

Question

数据存在一个数组里面，需要把这些数据显示到HTML页面上，目前是通过ng-repeat方式来显示。但是数组中title这一项的字符长度比较长，所以想要限制一下这段字符在HTML页面上显示时，超过指定的长度后面的内容就会以省略号的形式显示。请问要怎么样实现？

html页面：

<p ng-repeat="x in TU"> 
<img src="{{x.imgurl}}"> 
<h1>{{x.title}}</h1> 
<p>{{x.cost}}</p>
</p>

数据格式如下：

$scope.TU = [{
    "tuid":"xy0001",
    "imgurl":"img/178.jpg",
    "title":"哈哈哈哈哈哈哈哈哈",
    "cost":"86"
},
    {
    "tuid":"xy0002",
    "imgurl":"img/178.jpg",
    "title":"呵呵呵呵呵呵呵呵呵呵呵呵",
    "cost":"96"
},
{
    "tuid":"xy0003",
    "imgurl":"img/178.jpg",
    "title":"嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿嘿",
    "cost":"89"
}
]

Answer 1

Reposted from filter - Limit the length of a string with AngularJS - Stack Overflow

Write a filter:

jsangular.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) {
        value = value.substr(0, lastspace);
      }
    }

    return value + (tail || ' …');
  };
});

How to use:

{{some_text | cut:true:100:' ...'}}

Parameters:

Word cutting method (Boolean) - If true, only single words will be cut.
length (integer) - The maximum number of words to keep.
suffix (string, default: '...') - appended to the end of the word.

---

Or directly use the one written by others: angular-truncate demo

Answer 2

The official api is https://docs.angularjs.org/api/ng/filter/limitTo

Example html template:

Output numbers: {{ numbers | limitTo:numLimit }}

Answer 3

Let’s solve it directly with css. Three attributes are needed, which means no line wrapping, hiding the excess part, and displaying ellipsis in the excess part

white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;

Answer 4

Customize angularjs filter to cut long strings and add ellipses, demo address: http://www.jscssshare.com/#/sample/e6ao1zeH