使用angular定义用于截取特定长度的过滤器，并使用自定义符号（包括“...”）在末尾进行替换
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>stringSub</title>
</head>
<script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
<body ng-app="myApp" ng-controller="myController">
<span style="background: #ddd;border-radius: 4px;padding:2px;">{{arr | cutTxt:55:"..."}}</span>
</body>
<script>
var app = angular.module(‘myApp‘, []);
app.controller(‘myController‘, function($scope) {
$scope.arr="这是一个技术更新迅猛的年代！";
});
app.filter(‘cutTxt‘, function () {
return function (value, max,tail) {
var judgeLength = 0,cutString = new String();
var re = /^[\u4E00-\u9FA5]$/;
if (!value){
return ‘‘
};
max = parseInt(max);
for (var i = 0; i < value.length; i++) {
if (judgeLength >= max) {
cutString = cutString.substr(0, cutString.length-1);
cutString = cutString.concat(tail||"..");
return cutString;
}
var singleChar = value.charAt(i);
if (re.test(singleChar)) {
judgeLength+=2;
console.log(singleChar);
}
else{
judgeLength++;
}
cutString = cutString.concat(singleChar);
}
return cutString;
};
});
</script>
</html>
未限制长度时：
限制长度时：
时间： 2024-10-08 10:33:39