Javascript正则表达式空白替换

Question

I am trying to get the value of an <select></select> tag as set from the selected <option> value and replace any whitespace in the value with a dash. at the moment I am just then console.log() the value for testing but for some reason instead of selecting whitespace it is selecting and replacing lower case "s". The code I am using is: <select onchange='var cat = this.value; var modi = cat.replace(/\\s/g , "-"); console.log(modi);'> <select onchange='var cat = this.value; var modi = cat.replace(/\\s/g , "-"); console.log(modi);'>

Example: for example assume the this.value is equal to "test value"

Output: te-t value Expected Output: test-value

Answer 1

尝试这个

cat.split(" ").join("-");

Answer 2

 var str = "test value"; str = str.replace(/ /g,"-"); alert(str); 

Answer 3

试试这个方法

var reg = new RegExp(" ","g");

Answer 4

Try this

function myFunction() {
        var str = "Is this all there is?";
        var patt1 = / /g;
        var result = str.replace(patt1,"-");            
    }