//对于元字符 如 [] {} + ? 等，需要转义
var reg = new RegExp("\\[" + emoji.name + "\\]|\\/" + emoji.name, "gm");

var result  = input.replace(reg, '<img class="emoji" src="' + emoji.src + '"/>');

var emojis = [{name: '微笑',src: 'emoji/default/0.png'}, {name: '撇嘴',src: 'emoji/default/1.png'}, {name: '发呆',src: 'emoji/default/3.png'}]

function filterEmoji(input, emoji) {var regexp = new RegExp('\\[' + emoji.name + '\\]|\\/' + emoji.name, 'gm');var result = input.replace(regexp, '<img class="emoji" src="' + emoji.src + '"/>');return result;
}function emoji($sce) {return function(input) {// 循环emojis配置表，匹配对应表情emojis.forEach(function(emoji) {input = filterEmoji(input, emoji);});//这里由于angular的安全限制，使用$sce将匹配到的表情转换为可识别的标签。return $sce.trustAsHtml(input);};
}

var emojis = [{name: '微笑',css: 'emoji_smile'}, {name: '发呆',css: 'emoji_dai'}]

function filterEmoji(input, emoji) {var regexp = new RegExp('\\[' + emoji.name + '\\]|\\/' + emoji.name, 'gm');var result = input.replace(regexp,"<i class='emoji" + b + "></i>");}