AngularJS API介绍和用法示例

AngularJS API用于比较, 迭代和转换对象。基本AngularJS API包括

angular.isString()
angular.lowercase()
angular.uppercase()
angular.isNumber()

1. angular.isString()
用于检查对象是否为字符串, 如果对象为字符串则返回true, 否则返回false。
例子：

< !-- Write HTML code here --> < !DOCTYPE html> < html > < head > < script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js" > < / script > < / head > < body > < div ng-app = "gfg" ng-controller = "gfgCntrl" > < p > {{ object }}< / p > < p > {{ apiRes }}< / p > < / div > < script > var app = angular.module('gfg', []); app.controller('gfgCntrl', function($scope) { $scope.object = "lsbin"; $scope.apiRes = angular.isString($scope.object); }); < / script > < / body > < / html >

输出如下：

2. angular.lowercase()
它用于将字符串的所有字符转换为小写字符。
例子：

< !-- Write HTML code here --> < !DOCTYPE html> < html > < head > < script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js" > < / script > < / head > < body > < div ng-app = "gfg" ng-controller = "gfgCntrl" > < p > {{ object }}< / p > < p > {{ apiRes }}< / p > < / div > < script > var app = angular.module('gfg', []); app.controller('gfgCntrl', function($scope) { $scope.object = "lsbin"; $scope.apiRes = angular.lowercase($scope.object); }); < / script > < / body > < / html >

输出如下：

3. angular.uppercase()
它用于将字符串的所有字符转换为大写字符。
例子：

< !-- Write HTML code here --> < !DOCTYPE html> < html > < head > < script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js" > < / script > < / head > < body > < div ng-app = "gfg" ng-controller = "gfgCntrl" > < p > {{ object }}< / p > < p > {{ apiRes }}< / p > < / div > < script > var app = angular.module('gfg', []); app.controller('gfgCntrl', function($scope) { $scope.object = "lsbin"; $scope.apiRes = angular.uppercase($scope.object); }); < / script > < / body > < / html >

输出如下：

4. angular.isNumber()
用于检查对象是否为数字。如果object是一个数字, 则返回true, 否则返回false。
例子：

< !-- Write HTML code here --> < !DOCTYPE html> < html > < head > < script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js" > < / script > < / head > < body > < div ng-app = "gfg" ng-controller = "gfgCntrl" > < p > {{ object }}< / p > < p > {{ apiRes }}< / p > < / div > < script > var app = angular.module('gfg', []); app.controller('gfgCntrl', function($scope) { $scope.object = "lsbin"; $scope.apiRes = angular.isNumber($scope.object); }); < / script > < / body > < / html >

【AngularJS API介绍和用法示例】输出如下：