Question

I trying to write a script using jQuery, it is suppose to automatically put a space after every comma "," in order to separate a sequence of numbers that user input in an input field. e.g. if they enter (45,68,95,23) it becomes (45, 68, 95, 23) when the user moves away from the input field.

检查这些投入是否含有ma子

$("#test").blur(function() { 
    if(this.value.indexOf(",") !== -1) {
        alert( got a comma );
    }
});

Answer 1

简单地将投入价值按 com体分类,将每一项目的面积分成三倍,然后与 com和空间一道加入由此产生的阵列。

$("#test").blur(function () {
  this.value = $.map(this.value.split(","), $.trim).join(", ");
});

Answer 2

$( #test ).blur(function(){
  $(this).val(function(i,oldValue){
    return oldValue.replace( /,s*/g,  ,   );
  });
});

或者,用更少的 j子:

$( #test ).blur(function(){
  this.value = this.value.replace( /,s*/g,  ,   );
});

Answer 3

this.value=this.value.replace(/,/gim, ,  );

Answer 4

Using regex, this will normalize the whitespace around each comma to one U+0020 space character after, happening when the text box loses focus after changing value. It also trims whitespace (or a stray comma) from the beginning and end:

$("#test").change(function() {
    this.value = this.value.replace(/s*,s*/g,  ,  ).replace(/^,?s*|,?s*$/g,   );
});

Regex还有助于告诉用户其投入是否有效。 http://jsfiddle.net/rfQbJ/5/>rel=“nofollow> Try this demo:

$("#test").focus(function() {
    $(this).removeClass( valid invalid );
}).blur(function() {
    this.value = this.value.replace(/s*,s*/g,  ,  ).replace(/^,?s*|,?s*$/g,   );
    if(/^(?:[d.](?:, )?)*$/.test(this.value)) {
        $(this).addClass( valid );
    } else {
        $(this).addClass( invalid );
    }
});

友情链接