如何使用jQuery使用正则表达式解析内容？

I am trying to use jQuery to break right ascension and declination data into their constituents (hours, minutes, and seconds) and (degrees, arc-minutes, and arc-seconds), respectively from a string and store them in variables as numbers. For example:

我试图使用jQuery分别从字符串中将正确的提升和赤字数据分解为它们的成分(小时,分钟和秒)和(度,弧分和弧秒),并将它们作为数字存储在变量中。例如:

$dec = "-35:48:00" -> $dec_d = -35, $dec_m = 48, $dec_s = 00

Actually, the data resides in a cell (with a particular class ('ra')) in a table. At present, I have gotten this far:

实际上,数据驻留在表格中的单元格(具有特定类(“ra”))中。目前,我已经走到了这一步:

var $dec = $(this).find(".ra").html();

This gives me the declination as a string but I cannot figure out how to parse that string. I figured out the regular expression (-|)+\d+ (this gives me -35 from -35:48:00) to get the first part. How do I use that in conjunction with my code above?

这给了我作为字符串的偏差,但我无法弄清楚如何解析该字符串。我想出了正则表达式( - |)+ \ d +(这给了-35从-35:48:00得到-35)来得到第一部分。我如何结合上面的代码使用它?

2 个解决方案

#1

This should do it:

这应该这样做:

var dec = '-35:48:00';
var parts = dec.split(':');

parts[0] would then be -35, parts[1] would be 48, and parts[2] would be 00

part [0]则为-35,part [1]为48,part [2]为00

You could run them all through parseInt(parts[x], 0) if you want integers out of the strings:

如果你想要整数字符串,你可以通过parseInt(parts [x],0)运行它们:

var dec_d = parseInt(parts[0], 10);
var dec_m = parseInt(parts[1], 10);
var dec_s = parseInt(parts[2], 10);

I should point out this really has nothing to do with jQuery and is a Javascript problem (past getting the values out of the HTML document, at least) - The practice of prefixing a variable with a $ is usually done to signify that the variable contains a jQuery collection. Since in this situation it contains HTML, it is a little misleading

我应该指出这与jQuery无关,并且是一个Javascript问题(过去从HTML文档中获取值,至少) - 通常使用$前缀变量来表示变量包含一个jQuery集合。由于在这种情况下它包含HTML,因此有点误导

#2

Use String.match()

$dec = "-35:48:00";
matches = $dec.match(/-*[0-9]+/g);
for (i=0;i<matches.length;i++){
  alert(matches[i]);
}

#1