How to set the value of the text field in the page

The </strong> tag defines a multi-line text input control. </p> <p>The text area can hold an unlimited amount of text, and the default font for the text is a fixed-width font (usually Courier). </p> <p>You can specify the size of the textarea through the cols and rows attributes, but a better way is to use the CSS height and width attributes. </p> <p>Note: Use "%OD%OA" (carriage return/line feed) to separate lines of text in the text input area. </p> <p><img src="https://img.php.cn/upload/article/000/000/032/5cee4524d3579887.png" style="max-width:90%" style="max-width:90%" alt="How to set the value of the text field in the page" ></p> <p><strong>JQuery retrieves and assigns values ​​to textarea</strong></p> <p>Value</p> <p>var qrcodefortemcontent=$("#qrcodefortemcontent ").val();</p> <p>Assign value</p> <p>$("#qrcodefortemcontent").val("123"); </p> <p>JQuery gives label</p> <p> Value</p> <p>next_openid=$("#next_openid2").text();</p> <p>$("#hasnext2").text('YES');</p> <p>$ ("#hasnext2").text('YES');</p> <p>JQuery takes the value of input</p> <p></p> <p> qrcodeforeverflag=$("#qrcodeforeverflag").val() ;</p> <p>Assignment</p> <p>$("#qrcodeforeverflag").val("123");</p> <p><strong>tips:</strong>Use '' in the html tag Or "" is sometimes different. 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