IE8下,JS不識別indexOf的解決辦法
阿新 • • 發佈:2018-11-28
把這段程式碼放在你的indexOf方法之前:(在頁面中定義IndexOf方法)
if (!Array.prototype.indexOf){ Array.prototype.indexOf = function(elt /*, from*/){ var len = this.length >>> 0; var from = Number(arguments[1]) || 0; from = (from < 0) ? Math.ceil(from) : Math.floor(from); if (from < 0) from += len; for (; from < len; from++) { if (from in this && this[from] === elt) return from; } return -1; }; }
JS判斷是否選擇了圖片:
function checkImg(){ var sLogo = $("#sLogo").val(); var imgType = ['jpg','gif','png']; if(sLogo!=null){ var subffix = sLogo.substring(sLogo.lastIndexOf('.')+1); if(imgType.indexOf(subffix)==-1){ $("#spSLogo").attr("style","display:block;color:red;"); return false; }else{ $("#spSLogo").attr("style","display:none"); } } return true; }
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作者:赤砂之蠍我愛羅
來源:CSDN
原文:https://blog.csdn.net/xb12369/article/details/20922301