Eg:
var demoStr = "aaaaa&&bbbbbb&CC&DDDD&&&&&&EEEE&";
这里我需要把所有"&"替换为"%26"。
一种是将“&”符号只替换第一个(基本没用)---var demo1= demoStr .replace("&","%26");
替换后:aaaaa%26&bbbbbb&CC&DDDD&&&&&&EEEE&
第二种是利用正则将“&”批量替换为“%26”---var demo2= demoStr .replace(/\&/g,"%26");
替换后:aaaaa%26%26bbbbbb%26CC%26DDDD%26%26%26%26%26%26EEEE%26
与上面类似,是将“|”批量转译成"%7C"
var repStr1 = demoStr.replace(/\|/g,"%7C");
var repStr2 = demoStr.replace(/\&/g,"%26");