Common JS, solve textarea, picture preview, wait to load

/*
* Resolve the data entered in the textarea to the database and read to the page no Line wrapping effect
* Textarea_info is the class displayed in the page content area
* How to use: Add class= "Textarea_info" directly to the corresponding area
* TEXTAREA_BR () can be called in JS.
* */
function Textarea_br () {
var element = $ (". Textarea_info");
Element.each (function () {
var temp = $ (this). Text (). replace (/\n/g, ' <br/> ');
$ (this). HTML (temp);
});
}

/*
* Loading Issues
*load_img is the class that loads the picture
* How to use: 1. Page reference
* Top of 2.js call Waiting_load ()
* 3. Call $interval = Window.setinterval (img_load, 100) where you need to wait for the reminder to be loaded;
* */
function Waiting_load () {
$ ('. Load_img '). CSS (' Display ', ' none ');
var num=1;
function Img_load () {
if ($ ('. Load_img '). CSS (' display ') = = ' None ') {
$ ('. Load_img '). CSS (' Display ', ' block ');
}
num++;
$ ('. Load_img '). CSS ({
"Transform": "Rotate (" +num*20+ "deg)",
"-ms-transform": "Rotate (" +num*20+ "deg)",
"-moz-transform": "Rotate (" +num*20+ "deg)",
"-webkit-transform": "Rotate (" +num*20+ "deg)",
"-o-transform": "Rotate (" +num*20+ "deg)"
});
var now_url = window.location.href;
if (num==100) {
Window.clearinterval ($interval);
Alert (' Pro, your net is too jammed ');
}
}
}


/*
* Image Preview
* Image_preview is the area ID where the preview image is placed
* Upload_input is the ID of the input that uploaded the image
* Img_upload_info is the ID of the message prompt message box
* How to use: Add Id= "Upload_input" and then bind onchange= "Preview" in the upload image input
*
* */
function Preview (file)
{
var prevdiv = document.getElementById (' Image_preview ');
var imgsize=file.files[0].size;
if (imgsize>1000000) {
Layer.alert (' Picture is too large, please select a picture less than 1M ');
document.getElementById (' Upload_input '). value= ';
document.getElementById (' Img_upload_info '). Innerhtml= ' * Picture is too large, please adjust and re-upload ';
}else if (file.files && file.files[0])
{
var reader = new FileReader ();
Reader.onload = function (evt) {
prevdiv.innerhtml = ' ';
}
Reader.readasdataurl (File.files[0]);
}
Else
{
prevdiv.innerhtml = ' <div class= ' img ' style= ' width:180px;height:250px;filter:progid:d XImageTransform.Microsoft.AlphaImageLoader (sizingmethod=scale,src=\ ' + file.value + ' \ ' "></div>";
}
}

Common JS, solve textarea, picture preview, wait to load