從后臺獲取的數據如何把圖片地址和文字劃分開來。var str="好http://mooc-10050339.file.myqcloud.com/userH5/201707/1499306377538.gifhttp://mooc-10050339.file.myqcloud.com/userH5/201707/1499306377538.jpghttp://mooc10050339.file.myqcloud.com/userH5/201707/1499306377538.png好大家好我是好"如何匹配http然后包含gif或png、jpg 渲染到html頁面上來如圖好 <img src="http://mooc-10050339.file.myqcloud.com/userH5/201707/1499306377538.gif">好大家好我是好