我发现几个类似的问题,但我没有帮助。 因此,我有这个问题:
var xxx = "victoria";
var yyy = "i";
alert(xxx.match(yyy/g).length);
我不知道如何在指挥上通过变数。 请提供帮助。 谢谢。
我发现几个类似的问题,但我没有帮助。 因此,我有这个问题:
var xxx = "victoria";
var yyy = "i";
alert(xxx.match(yyy/g).length);
我不知道如何在指挥上通过变数。 请提供帮助。 谢谢。
虽然配对功能并不接受将字面描述为reg形,但你可以使用彩色标的构造者,并将之传递给强。 相应职能:
var re = new RegExp(yyy, g );
xxx.match(re);
您所需要的任何旗帜(如/g)可进入第二个参数。
页: 1 如果您的格局正在显现,
var xxx = "victoria";
var yyy = "i";
var rgxp = new RegExp(yyy, "g");
alert(xxx.match(rgxp).length);
如果格局不是动态的扼杀:
var xxx = "victoria";
var yyy = /i/g;
alert(xxx.match(yyy).length);
例如:
let myString = "Hello World"
let myMatch = myString.match(/H.*/)
console.log(myMatch)
或
let myString = "Hello World"
let myVariable = "H"
let myReg = new RegExp(myVariable + ".*")
let myMatch = myString.match(myReg)
console.log(myMatch)
<>Example> 1. 在座标中找到 number号
var word= Web Development Tutorial ;
var vowels= [aeiou] ;
var re = new RegExp(vowels, gi );
var arr = word.match(re);
document.write(arr.length);
for me anyways, it helps to see it used. just made this using the "re" example:
var analyte_data = sample- +sample_id;
var storage_keys = $.jStorage.index();
var re = new RegExp( analyte_data, g );
for(i=0;i<storage_keys.length;i++) {
if(storage_keys[i].match(re)) {
console.log(storage_keys[i]);
var partnum = storage_keys[i].split( - )[2];
}
}
下面是比较简单、有效的方式,像在联合材料中操作者一样。 enjoy!
const likePattern = %%i%%%%%a ;
const regexp = new RegExp(likePattern.replaceAll( % , .* ),"i");
console.log("victoria".match(regexp));
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