js实现长按显示全部内容

js实现文字超出省略号显示时长按显示全部

元素内容超出省略号显示时长按该元素，生成toast弹窗(id:toolkitContainer)，以显示全部内容

#toolkitContainer {   max-width: 150px;   position: absolute;   z-index: 999;   background-color: #f6f6f6;   border-radius: 5px;   color: #000;   padding: 5px 15px;   border: solid 1px #ddd;   opacity: .95;   font-size: 12px; } 

window.onload = () => { 	initListener(); 	//调用 	$('td').each(function() { 	   if($(this).width() < $(this).text().length * 14) { 	      $(this).addClass('toolkit'); 	   } 	}); };  //字浮动显示逻辑 var initListener = function() {    $('body').on('touchstart', '.toolkit', function(e) {       var toolkit = $('#toolkitContainer');       var body = $('body');       var _this = $(this);        if(toolkit.length == 0) {          toolkit = $('<div></div>').attr('id', 'toolkitContainer')             .appendTo($('body'));       }        _this.on('touchend', function() {          $('#toolkitContainer').remove();           _this.off('touchend');          _this.off('touchcancel');       });        _this.on('touchcancel', function() {          $('#toolkitContainer').remove();           _this.off('touchend');          _this.off('touchcancel');       });        toolkit.html($(this).attr('tText') || $(this).html());        if(!toolkit.html()) {          return;       }        var tx = e.originalEvent.touches[0].pageX - toolkit.width() / 2;       tx = tx < 0 ? 0 : tx;       tx = tx + toolkit.width() > body.width() ? tx - toolkit.width() : tx;       var ty = e.originalEvent.touches[0].pageY - toolkit.height() - 30;       ty = ty < 0 ? 0 : ty;        toolkit.css('top', ty + 'px');       toolkit.css('left', tx + 'px');       toolkit.css('opcaity', '0.2');       toolkit.show();       toolkit.animate({          opcaity: 1       }, 300);    }); };