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The maxLength property sets or returns the maximum number of characters in a text field.
设置或返回输入区域可输入的最大的字符数量
textObject.maxLength=number |
<html> <head> <script type="text/javascript"> function maxLen() { alert(document.getElementById("name").maxLength) } </script> </head> <body> <form> Enter your name: <input type="text" id="name" value="Mickey Mouse" size="20" maxlength="50" /> <br /><br /> <input type="button" onclick="maxLen()" value="Check maxlength of input field" /> </form> </body> </html> |
Jump to the next field when the current field's maxlength has been reached
当前的输入区域到达最大的字符限度的时候自动转到下一输入区域