How to replace spaces with "%20"

 

1) Using the url encoding method directly, the spaces can be escaped as "%20".

function replaceSpace(str)
{
    return encodeURIComponent(str);
}

2) is to use regular matching to find empty characters, and then replace them. (the replaceAll method exists in java, but not in js)

function replaceSpace(str)
{
    return str.replace(/\s/g,'%20');
}

3) Use a space to split the characters into an array, then use the character '%20' to link the array into one character.

function replaceSpace(str)
{
    var splitArr = p.split ('' );
    return splitArr.join ('% 20' );
}

4) Loop the string character, if it is not undefined and not a space, it will be directly linked to the new string, if it is a space, the link character "%20" will be linked to newStr.

function replaceSpace(str)
{
    var newStr = '', i, len = str.length;
    for(i=0;i<len;i++) {
        if(str[i] != 'undefined' && str[i] !== ' ') {
            newStr += str[i];
        }else {
            newStr += '%20';
        }
    }
    return newStr;
}