javascript字符串学习总结

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示例代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>字符串对象</title><style type="text/css">*{margin:0}#show{width:200px;height:200px;margin:0 auto;color:white;background:#2c2c2c;text-align:center}</style><script type="text/javascript">//var str = "hellow";var str = new String("hellow");document.write("<div id='show'>");document.write("字符串的长度:"+str.length+"<br/>");document.write("原始字符串的样式"+str+"<br/>");document.write("粗体:"+str.bold().italics().strike()+"<br/>");document.write("粗体:<b>"+str+"</b><br/>");document.write("</div>");</script></head><body></body></html>

效果如下：

代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>字符串方法</title><style type="text/css">*{margin:0}#show{width:200px;height:200px;margin:0 auto;color:white;background:#2c2c2c;text-align:center}</style><script type="text/javascript">var str = "Hello,world";document.write("<div id='show'>");var index = str.indexOf("o",5);var i = str.lastIndexOf("o");document.write("Hello在字符串中出现的位置为:"+index+"<br/>");document.write("o在字符串中最后出现的位置为:"+i);document.write("<br/>"+str.charAt(2));document.write("<br/>"+str.charCodeAt(2));document.write("<br/>大写字母为:"+str.toLowerCase());document.write("</div>");</script></head><body></body></html>

结果如下：

示例代码入下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>字符串方法</title><style type="text/css">*{margin:0}#show{width:200px;height:200px;margin:0 auto;color:white;background:#2c2c2c;text-align:center}</style><script type="text/javascript">var str = "a,b,c,d";var str1="abcd";var a = str.split(",");var temp = "";document.write("<div id='show'>");for(var index in a){temp += "数组中第"+(parseInt(index)+1)+"个元素："+a[index]+"<br/>";}document.write(temp);document.write("<br/>slice:"+str1.slice(1,3));document.write("<br/>substring:"+str1.substring(1,3));document.write("<br/>substr:"+str1.substr(1,3));document.write("</div>");</script></head><body></body></html>

结果如下：

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